Large project reorder and consolidation

37 files changed, 3690 insertions, 0 deletions

diff --git a/lib/VNLib.Data.Caching.Extensions/LICENSE.txt b/lib/VNLib.Data.Caching.Extensions/LICENSE.txt
new file mode 100644
index 0000000..147bcd6
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/LICENSE.txt
@@ -0,0 +1,195 @@
+Copyright (c) 2022 Vaughn Nugent
+
+Contact information
+    Name: Vaughn Nugent
+    Email: public[at]vaughnnugent[dot]com
+	Website: https://www.vaughnnugent.com
+
+The software in this repository is licensed under the GNU Affero GPL version 3.0 (or any later version). 
+
+GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
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+
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+12. No Surrender of Others' Freedom.
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+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+13. Remote Network Interaction; Use with the GNU General Public License.
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+Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
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+14. Revised Versions of this License.
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+
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+15. Disclaimer of Warranty.
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+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+16. Limitation of Liability.
+
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+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching.Extensions/README.md b/lib/VNLib.Data.Caching.Extensions/README.md
new file mode 100644
index 0000000..4326223
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/README.md
@@ -0,0 +1,8 @@
+# VNLib.Data.Caching.Extensions
+*An extension library for rapid VNCache development*
+
+#### Builds
+Debug build w/ symbols & xml docs, release builds, NuGet packages, and individually packaged source code are available on my [website](https://www.vaughnnugent.com/resources/software). All tar-gzip (.tgz) files will have an associated .sha384 appended checksum of the desired download file.
+
+## License
+Source files in for this project are licensed to you under the GNU Affero General Public License (or any later version). See the LICENSE files for more information.
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching.Extensions/build.readme.md b/lib/VNLib.Data.Caching.Extensions/build.readme.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/build.readme.md
diff --git a/lib/VNLib.Data.Caching.Extensions/src/ActiveServer.cs b/lib/VNLib.Data.Caching.Extensions/src/ActiveServer.cs
new file mode 100644
index 0000000..1e28947
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/ActiveServer.cs
@@ -0,0 +1,42 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: ActiveServer.cs 
+*
+* ActiveServer.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Text.Json.Serialization;
+
+namespace VNLib.Data.Caching.Extensions
+{
+    public class ActiveServer
+    {
+        [JsonPropertyName("address")]
+        public string? HostName { get; set; }
+        [JsonPropertyName("server_id")]
+        public string? ServerId { get; set; }
+        [JsonPropertyName("ip_address")]
+        public string? Ip { get; set; }
+        ///<inheritdoc/>
+        public override int GetHashCode() => ServerId!.GetHashCode(StringComparison.OrdinalIgnoreCase);
+        ///<inheritdoc/>
+        public override bool Equals(object? obj) => obj is ActiveServer s && GetHashCode() == s.GetHashCode();
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/BrokerRegistrationRequest.cs b/lib/VNLib.Data.Caching.Extensions/src/BrokerRegistrationRequest.cs
new file mode 100644
index 0000000..4ed4ab7
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/BrokerRegistrationRequest.cs
@@ -0,0 +1,113 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: BrokerRegistrationRequest.cs 
+*
+* BrokerRegistrationRequest.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using VNLib.Utils;
+using VNLib.Hashing.IdentityUtility;
+
+
+namespace VNLib.Data.Caching.Extensions
+{
+    /// <summary>
+    /// A broker registration request message in a fluent api
+    /// format. This message may be disposed when no longer in use
+    /// </summary>
+    public sealed class BrokerRegistrationRequest : VnDisposeable
+    {
+        private bool ownsKey;
+        private ReadOnlyJsonWebKey? SigningKey;
+
+        /// <summary>
+        /// The cache server node id
+        /// </summary>
+        public string? NodeId { get; private set; }
+        /// <summary>
+        /// The broker server's address
+        /// </summary>
+        public Uri? BrokerAddress { get; private set; }
+        /// <summary>
+        /// The security token used by the broker server to 
+        /// authenticate during heartbeat connections
+        /// </summary>
+        public string? HeartbeatToken { get; private set; }
+        /// <summary>
+        /// The address for remote clients to use to 
+        /// connect to this server
+        /// </summary>
+        public string? RegistrationAddress { get; private set; }      
+
+        /// <summary>
+        /// Recovers the private key from the supplied certificate
+        /// </summary>
+        /// <param name="jwk">The private key used to sign messages</param>
+        /// <param name="ownsKey">A value that indicates if the current instance owns the key</param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentException"></exception>
+        public BrokerRegistrationRequest WithSigningKey(ReadOnlyJsonWebKey jwk, bool ownsKey)
+        {
+            this.ownsKey = ownsKey;
+            SigningKey = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+
+        public BrokerRegistrationRequest WithBroker(Uri brokerUri)
+        {
+            BrokerAddress = brokerUri;
+            return this;
+        }
+
+        public BrokerRegistrationRequest WithRegistrationAddress(string address)
+        {
+            RegistrationAddress = address;
+            return this;
+        }
+
+        public BrokerRegistrationRequest WithHeartbeatToken(string token)
+        {
+            HeartbeatToken = token;
+            return this;
+        }
+        
+        public BrokerRegistrationRequest WithNodeId(string nodeId)
+        {
+            NodeId = nodeId;
+            return this;
+        }
+
+        internal void SignJwt(JsonWebToken jwt)
+        {
+            jwt.SignFromJwk(SigningKey);
+        }
+
+        internal IReadOnlyDictionary<string, string?> JsonHeader => SigningKey!.JwtHeader;
+
+        ///<inheritdoc/>
+        protected override void Free()
+        {
+            if (ownsKey)
+            {
+                SigningKey?.Dispose();
+            }
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/ClientCacheConfiguration.cs b/lib/VNLib.Data.Caching.Extensions/src/ClientCacheConfiguration.cs
new file mode 100644
index 0000000..d9cca33
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/ClientCacheConfiguration.cs
@@ -0,0 +1,133 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: ClientCacheConfiguration.cs 
+*
+* ClientCacheConfiguration.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Security.Cryptography;
+
+using VNLib.Hashing;
+using VNLib.Hashing.IdentityUtility;
+
+namespace VNLib.Data.Caching.Extensions
+{
+    /// <summary>
+    /// A fluent api configuration object for configuring a <see cref="FBMClient"/>
+    /// to connect to cache servers.
+    /// </summary>
+    public sealed class ClientCacheConfiguration
+    {
+        internal ReadOnlyJsonWebKey? SigningKey { get; private set; }
+        internal ReadOnlyJsonWebKey? VerificationKey { get; private set; }
+        internal ReadOnlyJsonWebKey? BrokerVerificationKey { get; private set; }
+        
+        internal string ServerChallenge { get; } = RandomHash.GetRandomBase32(24);
+        internal string? NodeId { get; set; }
+        internal Uri? BrokerAddress { get; set; }
+        internal bool UseTls { get; set; }
+        internal ActiveServer[]? CacheServers { get; set; }
+
+        internal IReadOnlyDictionary<string, string?> JwtHeader => SigningKey!.JwtHeader;
+
+        /// <summary>
+        /// Imports the private key used to sign messages
+        /// </summary>
+        /// <param name="jwk">The <see cref="ReadOnlyJsonWebKey"/> with a private key loaded</param>
+        /// <returns>Chainable fluent object</returns>
+        /// <exception cref="ArgumentException"></exception>
+        /// <exception cref="CryptographicException"></exception>
+        public ClientCacheConfiguration WithSigningCertificate(ReadOnlyJsonWebKey jwk)
+        {
+            SigningKey = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+
+        /// <summary>
+        /// Imports the public key used to verify messages from the remote server
+        /// </summary>
+        /// <param name="jwk">The <see cref="ReadOnlyJsonWebKey"/> public key only used for message verification</param>
+        /// <returns>Chainable fluent object</returns>
+        /// <exception cref="ArgumentException"></exception>
+        /// <exception cref="CryptographicException"></exception>
+        public ClientCacheConfiguration WithVerificationKey(ReadOnlyJsonWebKey jwk)
+        {
+            VerificationKey = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+
+        public ClientCacheConfiguration WithBrokerVerificationKey(ReadOnlyJsonWebKey jwk)
+        {
+            BrokerVerificationKey = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+
+        /// <summary>
+        /// Specifies if all connections should be using TLS
+        /// </summary>
+        /// <param name="useTls">A value that indicates if connections should use TLS</param>
+        /// <returns>Chainable fluent object</returns>
+        public ClientCacheConfiguration WithTls(bool useTls)
+        {
+            UseTls = useTls;
+            return this;   
+        }
+        /// <summary>
+        /// Specifies the broker address to discover cache nodes from
+        /// </summary>
+        /// <param name="brokerAddress">The address of the server broker</param>
+        /// <returns>Chainable fluent object</returns>
+        /// <exception cref="ArgumentNullException"></exception>
+        public ClientCacheConfiguration WithBroker(Uri brokerAddress)
+        {
+            this.BrokerAddress = brokerAddress ?? throw new ArgumentNullException(nameof(brokerAddress));
+            return this;
+        }
+
+        /// <summary>
+        /// Specifies the current server's cluster node id. If this 
+        /// is a server connection attempting to listen for changes on the
+        /// remote server, this id must be set and unique
+        /// </summary>
+        /// <param name="nodeId">The cluster node id of the current server</param>
+        /// <returns>Chainable fluent object</returns>
+        /// <exception cref="ArgumentNullException"></exception>
+        public ClientCacheConfiguration WithNodeId(string nodeId)
+        {
+            this.NodeId = nodeId ?? throw new ArgumentNullException(nameof(nodeId));
+            return this;
+        }
+
+        internal void SignJwt(JsonWebToken jwt)
+        {
+            jwt.SignFromJwk(SigningKey);
+        }
+
+        internal bool VerifyCache(JsonWebToken jwt)
+        {
+            return jwt.VerifyFromJwk(VerificationKey);
+        }
+
+        internal bool VerifyBroker(JsonWebToken jwt)
+        {
+            return jwt.VerifyFromJwk(BrokerVerificationKey);
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/FBMDataCacheExtensions.cs b/lib/VNLib.Data.Caching.Extensions/src/FBMDataCacheExtensions.cs
new file mode 100644
index 0000000..ebdfd5b
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/FBMDataCacheExtensions.cs
@@ -0,0 +1,469 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: FBMDataCacheExtensions.cs 
+*
+* FBMDataCacheExtensions.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.Net;
+using System.Text;
+using System.Security;
+using System.Text.Json;
+using System.Security.Cryptography;
+using System.Runtime.CompilerServices;
+
+using RestSharp;
+
+using VNLib.Net.Http;
+using VNLib.Hashing;
+using VNLib.Hashing.IdentityUtility;
+using VNLib.Utils.Memory;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Extensions;
+using VNLib.Net.Rest.Client;
+using VNLib.Net.Messaging.FBM;
+using VNLib.Net.Messaging.FBM.Client;
+
+namespace VNLib.Data.Caching.Extensions
+{
+
+    /// <summary>
+    /// Provides extension methods for FBM data caching using 
+    /// cache servers and brokers
+    /// </summary>
+    public static class FBMDataCacheExtensions
+    {
+        /// <summary>
+        /// The websocket sub-protocol to use when connecting to cache servers
+        /// </summary>
+        public const string CACHE_WS_SUB_PROCOL = "object-cache";
+        /// <summary>
+        /// The default cache message header size
+        /// </summary>
+        public const int MAX_FBM_MESSAGE_HEADER_SIZE = 1024;
+
+        private static readonly RestClientPool ClientPool = new(2,new RestClientOptions()
+        {
+            MaxTimeout = 10 * 1000,
+            FollowRedirects = false,
+            Encoding = Encoding.UTF8,
+            AutomaticDecompression = DecompressionMethods.All,
+            ThrowOnAnyError = true,
+        });
+
+        private static readonly ConditionalWeakTable<FBMClient, ClientCacheConfiguration> ClientCacheConfig = new();
+
+        /// <summary>
+        /// Gets a <see cref="FBMClientConfig"/> preconfigured object caching
+        /// protocl
+        /// </summary>
+        /// <param name="heap">The client buffer heap</param>
+        /// <param name="maxMessageSize">The maxium message size (in bytes)</param>
+        /// <param name="debugLog">An optional debug log</param>
+        /// <returns>A preconfigured <see cref="FBMClientConfig"/> for object caching</returns>
+        public static FBMClientConfig GetDefaultConfig(IUnmangedHeap heap, int maxMessageSize, ILogProvider? debugLog = null)
+        {
+            return new()
+            {
+                BufferHeap = heap,
+                MaxMessageSize = maxMessageSize * 2,
+                RecvBufferSize = maxMessageSize,
+                MessageBufferSize = maxMessageSize,
+
+                MaxHeaderBufferSize = MAX_FBM_MESSAGE_HEADER_SIZE,
+                SubProtocol = CACHE_WS_SUB_PROCOL,
+
+                HeaderEncoding = Helpers.DefaultEncoding,
+
+                KeepAliveInterval = TimeSpan.FromSeconds(30),
+
+                DebugLog = debugLog
+            };
+        }
+
+        private static void LogDebug(this FBMClient client, string message)
+        {
+            client.Config.DebugLog?.Debug("{debug}: {data}", "[CACHE]", message);
+        }
+
+        /// <summary>
+        /// Contacts the cache broker to get a list of active servers to connect to
+        /// </summary>
+        /// <param name="request">The request message used to connecto the broker server</param>
+        /// <param name="cancellationToken">A token to cancel the operationS</param>
+        /// <returns>The list of active servers</returns>
+        /// <exception cref="SecurityException"></exception>
+        /// <exception cref="ArgumentNullException"></exception>
+        public static async Task<ActiveServer[]?> ListServersAsync(ListServerRequest request, CancellationToken cancellationToken = default)
+        {
+            _ = request ?? throw new ArgumentNullException(nameof(request));
+
+            string jwtBody;
+            //Build request jwt
+            using (JsonWebToken requestJwt = new())
+            {
+                requestJwt.WriteHeader(request.JwtHeader);
+                requestJwt.InitPayloadClaim()
+                    .AddClaim("iat", DateTimeOffset.UtcNow.ToUnixTimeMilliseconds())
+                    .AddClaim("nonce", RandomHash.GetRandomBase32(16))
+                    .CommitClaims();
+                //sign the jwt
+                request.SignJwt(requestJwt);
+                //Compile the jwt
+                jwtBody = requestJwt.Compile();
+            }
+
+            //New list request
+            RestRequest listRequest = new(request.BrokerAddress, Method.Post);
+
+            //Add the jwt as a string to the request body
+            listRequest.AddStringBody(jwtBody, DataFormat.None);
+            listRequest.AddHeader("Accept", HttpHelpers.GetContentTypeString(ContentType.Text));
+            listRequest.AddHeader("Content-Type", HttpHelpers.GetContentTypeString(ContentType.Text));
+
+            byte[] data;
+
+            //Rent client
+            using (ClientContract client = ClientPool.Lease())
+            {
+                //Exec list request
+                RestResponse response = await client.Resource.ExecuteAsync(listRequest, cancellationToken);
+
+                if (!response.IsSuccessful)
+                {
+                    throw response.ErrorException!;
+                }
+
+                data = response.RawBytes ?? throw new InvalidOperationException("No data returned from broker");
+            }
+            //Response is jwt
+            using JsonWebToken responseJwt = JsonWebToken.ParseRaw(data);
+            
+            //Verify the jwt
+            if (!request.VerifyJwt(responseJwt))
+            {
+                throw new SecurityException("Failed to verify the broker's challenge, cannot continue");
+            }
+            
+            using JsonDocument doc = responseJwt.GetPayload();
+            return doc.RootElement.GetProperty("servers").Deserialize<ActiveServer[]>();
+        }
+
+        /// <summary>
+        /// Registers the current server as active with the specified broker
+        /// </summary>
+        /// <param name="registration">The registration request</param>
+        public static async Task ResgisterWithBrokerAsync(BrokerRegistrationRequest registration)
+        {
+            _ = registration ?? throw new ArgumentNullException(nameof(registration));
+            _ = registration.HeartbeatToken ?? throw new ArgumentException("Missing required heartbeat access token");
+            _ = registration.NodeId ?? throw new ArgumentException("Missing required cache server NodeId");
+            _ = registration.BrokerAddress ?? throw new ArgumentException("Broker server address has not been configured");
+            _ = registration.RegistrationAddress ?? throw new ArgumentException("Missing required registration address", nameof(registration));
+
+            string requestData;
+            //Create the jwt for signed registration message
+            using (JsonWebToken jwt = new())
+            {
+                //Shared jwt header
+                jwt.WriteHeader(registration.JsonHeader);
+                //build jwt claim
+                jwt.InitPayloadClaim()
+                    .AddClaim("address", registration.RegistrationAddress)
+                    .AddClaim("sub", registration.NodeId)
+                    .AddClaim("token", registration.HeartbeatToken)
+                    .CommitClaims();
+
+                //Sign the jwt
+                registration.SignJwt(jwt);
+                //Compile and save
+                requestData = jwt.Compile();
+            }
+            //Create reg request message
+            RestRequest regRequest = new(registration.BrokerAddress);
+            regRequest.AddStringBody(requestData, DataFormat.None);
+            regRequest.AddHeader("Content-Type", "text/plain");
+            //Rent client
+            using ClientContract cc = ClientPool.Lease();
+            //Exec the regitration request
+            RestResponse response = await cc.Resource.ExecutePutAsync(regRequest);
+            if(!response.IsSuccessful)
+            {
+                throw response.ErrorException!;
+            }
+        }
+    
+
+        /// <summary>
+        /// Allows for configuration of an <see cref="FBMClient"/>
+        /// for a connection to a cache server
+        /// </summary>
+        /// <param name="client"></param>
+        /// <returns>A fluent api configuration builder for the current client</returns>
+        public static ClientCacheConfiguration GetCacheConfiguration(this FBMClient client) => ClientCacheConfig.GetOrCreateValue(client);
+
+        /// <summary>
+        /// Discovers cache nodes in the broker configured for the current client.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="token">A token to cancel the discovery</param>
+        /// <returns>A task the resolves the list of active servers on the broker server</returns>
+        public static Task<ActiveServer[]?> DiscoverCacheNodesAsync(this FBMClientWorkerBase client, CancellationToken token = default) => client.Client.DiscoverCacheNodesAsync(token);
+       
+        /// <summary>
+        /// Discovers cache nodes in the broker configured for the current client.
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="token">A token to cancel the discovery </param>
+        /// <returns>A task the resolves the list of active servers on the broker server</returns>
+        public static async Task<ActiveServer[]?> DiscoverCacheNodesAsync(this FBMClient client, CancellationToken token = default)
+        {
+            ClientCacheConfiguration conf = ClientCacheConfig.GetOrCreateValue(client);
+            //Request from config
+            using ListServerRequest req = ListServerRequest.FromConfig(conf);
+            //List servers async
+            return conf.CacheServers = await ListServersAsync(req, token);
+        }
+
+        /// <summary>
+        /// Waits for the client to disconnect from the server while observing 
+        /// the cancellation token. If the token is cancelled, the connection is 
+        /// closed cleanly if possible
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="token">A token to cancel the connection to the server</param>
+        /// <returns>A task that complets when the connecion has been closed successfully</returns>
+        public static async Task WaitForExitAsync(this FBMClient client, CancellationToken token = default)
+        {
+            client.LogDebug("Waiting for cache client to exit");
+            //Get task for cancellation
+            Task cancellation = token.WaitHandle.WaitAsync();
+            //Task for status handle
+            Task run = client.ConnectionStatusHandle.WaitAsync();
+            //Wait for cancellation or 
+            _ = await Task.WhenAny(cancellation, run);
+            
+            client.LogDebug("Disconnecting the cache client");
+            //Normal try to disconnect the socket
+            await client.DisconnectAsync(CancellationToken.None);
+            //Notify if cancelled
+            token.ThrowIfCancellationRequested();
+        }
+
+        /// <summary>
+        /// Connects to a random server from the servers discovered during a cache server discovery
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="cancellation">A token to cancel the operation</param>
+        /// <returns>The server that the connection was made with</returns>
+        /// <exception cref="ArgumentException"></exception>
+        public static async Task<ActiveServer> ConnectToRandomCacheAsync(this FBMClient client, CancellationToken cancellation = default)
+        {
+            //Get stored config
+            ClientCacheConfiguration conf = ClientCacheConfig.GetOrCreateValue(client);
+            //Select random
+            ActiveServer? randomServer = conf.CacheServers?.SelectRandom();
+            _ = randomServer ?? throw new ArgumentException("No servers detected, cannot connect");
+            await ConnectToCacheAsync(client, randomServer, cancellation);
+            return randomServer;
+        }
+
+        /// <summary>
+        /// Connects to the specified server on the configured cache client
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="server">The server to connect to</param>
+        /// <param name="token">A token to cancel the operation</param>
+        /// <returns>A task that resolves when the client is connected to the cache server</returns>
+        /// <exception cref="FBMException"></exception>
+        /// <exception cref="FBMServerNegiationException"></exception>
+        /// <exception cref="ArgumentException"></exception>
+        /// <exception cref="ArgumentNullException"></exception>
+        /// <exception cref="SecurityException"></exception>
+        /// <exception cref="ObjectDisposedException"></exception>
+        public static Task ConnectToCacheAsync(this FBMClient client, ActiveServer server, CancellationToken token = default)
+        {
+            _ = client ?? throw new ArgumentNullException(nameof(client));
+            _ = server ?? throw new ArgumentNullException(nameof(server));
+            
+            //Get stored config
+            ClientCacheConfiguration conf = ClientCacheConfig.GetOrCreateValue(client);
+            //Connect to server (no server id because client not replication server)
+            return ConnectToCacheAsync(client, conf, server, token);
+        }
+     
+
+        private static async Task ConnectToCacheAsync(FBMClient client, ClientCacheConfiguration request, ActiveServer server, CancellationToken token = default)
+        {
+            //Construct server uri
+            Uri serverUri = new(server.HostName!);
+            
+            //build ws uri
+            UriBuilder uriBuilder = new(serverUri)
+            {
+                Scheme = request.UseTls ? "wss://" : "ws://"
+            };
+            
+            string jwtMessage;
+            //Init jwt for connecting to server
+            using (JsonWebToken jwt = new())
+            {
+                jwt.WriteHeader(request.JwtHeader);
+                
+                //Init claim
+                JwtPayload claim = jwt.InitPayloadClaim();
+                
+                claim.AddClaim("chl", request.ServerChallenge);
+                
+                if (!string.IsNullOrWhiteSpace(request.NodeId))
+                {
+                    /*
+                    * The unique node id so the other nodes know to load the 
+                    * proper event queue for the current server
+                    */
+                    claim.AddClaim("sub", request.NodeId);
+                }
+                
+                claim.CommitClaims();
+
+                //Sign jwt
+                request.SignJwt(jwt);
+
+                //Compile to string
+                jwtMessage = jwt.Compile();
+            }
+
+            RestRequest negotation = new(serverUri, Method.Get);
+            //Set the jwt auth header for negotiation
+            negotation.AddHeader("Authorization", jwtMessage);
+            negotation.AddHeader("Accept", HttpHelpers.GetContentTypeString(ContentType.Text));
+
+            client.LogDebug("Negotiating with cache server");
+            
+            string authToken;
+            
+            //rent client
+            using (ClientContract clientContract = ClientPool.Lease())
+            {
+                //Execute the request
+                RestResponse response = await clientContract.Resource.ExecuteGetAsync(negotation, token);
+                
+                //Check verify the response
+                if (!response.IsSuccessful)
+                {
+                    throw response.ErrorException!;
+                }
+
+                if (response.Content == null)
+                {
+                    throw new FBMServerNegiationException("Failed to negotiate with the server, no response");
+                }
+                
+                //Raw content
+                authToken = response.Content;
+            }
+
+            //Parse the jwt
+            using (JsonWebToken jwt = JsonWebToken.Parse(authToken))
+            {
+                //Verify the jwt
+                if (!request.VerifyCache(jwt))
+                {
+                    throw new SecurityException("Failed to verify the cache server's negotiation message, cannot continue");
+                }
+
+                //Confirm the server's buffer configuration
+                ValidateServerNegotation(client, request.ServerChallenge, jwt);
+            }
+            
+            client.LogDebug("Server negotiation validated, connecting to server");
+
+            //The client authorization header is the exact response
+            client.ClientSocket.Headers[HttpRequestHeader.Authorization] = authToken;
+
+            //Connect async
+            await client.ConnectAsync(uriBuilder.Uri, token);
+        }
+
+        private static void ValidateServerNegotation(FBMClient client, string challenge, JsonWebToken jwt)
+        {
+            try
+            {
+                //Get the response message to verify the challenge, and client arguments
+                using JsonDocument doc = jwt.GetPayload();
+
+                IReadOnlyDictionary<string, JsonElement> args = doc.RootElement
+                                                            .EnumerateObject()
+                                                            .ToDictionary(static k => k.Name, static v => v.Value);
+
+                //get the challenge response
+                string challengeResponse = args["chl"].GetString()!;
+
+                //Check the challenge response
+                if (!challenge.Equals(challengeResponse, StringComparison.Ordinal))
+                {
+                    throw new FBMServerNegiationException("Failed to negotiate with the server, challenge response does not match");
+                }
+
+                //Get the negiation values
+                uint recvBufSize = args[FBMClient.REQ_RECV_BUF_QUERY_ARG].GetUInt32();
+                uint headerBufSize = args[FBMClient.REQ_HEAD_BUF_QUERY_ARG].GetUInt32();
+                uint maxMessSize = args[FBMClient.REQ_MAX_MESS_QUERY_ARG].GetUInt32();
+                
+                //Verify the values
+                if (client.Config.RecvBufferSize > recvBufSize)
+                {
+                    throw new FBMServerNegiationException("Failed to negotiate with the server, the server's recv buffer size is too small");
+                }
+
+                if (client.Config.MaxHeaderBufferSize > headerBufSize)
+                {
+                    throw new FBMServerNegiationException("Failed to negotiate with the server, the server's header buffer size is too small");
+                }
+
+                if (client.Config.MaxMessageSize > maxMessSize)
+                {
+                    throw new FBMServerNegiationException("Failed to negotiate with the server, the server's max message size is too small");
+                }
+            }
+            catch (FBMException)
+            {
+                throw;
+            }
+            catch (Exception ex)
+            {
+                throw new FBMServerNegiationException("Negotiation with the server failed", ex);
+            }
+        }
+
+        /// <summary>
+        /// Selects a random server from a collection of active servers
+        /// </summary>
+        /// <param name="servers"></param>
+        /// <returns>A server selected at random</returns>
+        public static ActiveServer SelectRandom(this ICollection<ActiveServer> servers)
+        {
+            //select random server
+            int randServer = RandomNumberGenerator.GetInt32(0, servers.Count);
+            return servers.ElementAt(randServer);
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/FBMServerNegiationException.cs b/lib/VNLib.Data.Caching.Extensions/src/FBMServerNegiationException.cs
new file mode 100644
index 0000000..d4d08c8
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/FBMServerNegiationException.cs
@@ -0,0 +1,43 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: FBMServerNegiationException.cs 
+*
+* FBMServerNegiationException.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using VNLib.Net.Messaging.FBM;
+
+
+namespace VNLib.Data.Caching.Extensions
+{
+    /// <summary>
+    /// Represents an exception that is raised because of a client-server
+    /// negotiation failure.
+    /// </summary>
+    public class FBMServerNegiationException : FBMException
+    {
+        public FBMServerNegiationException()
+        {}
+        public FBMServerNegiationException(string message) : base(message)
+        {}
+        public FBMServerNegiationException(string message, Exception innerException) : base(message, innerException)
+        {}
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/ListServerRequest.cs b/lib/VNLib.Data.Caching.Extensions/src/ListServerRequest.cs
new file mode 100644
index 0000000..9e80bd2
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/ListServerRequest.cs
@@ -0,0 +1,116 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.Extensions
+* File: ListServerRequest.cs 
+*
+* ListServerRequest.cs is part of VNLib.Data.Caching.Extensions which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.Extensions is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.Extensions is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Security.Cryptography;
+using System.Security.Cryptography.X509Certificates;
+
+using VNLib.Utils;
+using VNLib.Hashing.IdentityUtility;
+
+namespace VNLib.Data.Caching.Extensions
+{
+    /// <summary>
+    /// A request container for a ListServer request
+    /// </summary>
+    public sealed class ListServerRequest : VnDisposeable
+    {
+        private readonly bool _ownsKeys;
+
+        private ReadOnlyJsonWebKey? VerificationKey;
+        private ReadOnlyJsonWebKey? SigningAlg;
+
+        /// <summary>
+        /// The address of the broker server to connect to
+        /// </summary>
+        public Uri BrokerAddress { get; }
+
+        public ListServerRequest(Uri brokerAddress)
+        {
+            BrokerAddress = brokerAddress;
+            _ownsKeys = true;
+        }
+        
+        private ListServerRequest(ClientCacheConfiguration conf)
+        {
+            //Broker verification key is required
+            VerificationKey = conf.BrokerVerificationKey;
+            SigningAlg = conf.SigningKey;
+            BrokerAddress = conf.BrokerAddress ?? throw new ArgumentException("Broker address must be specified");
+            _ownsKeys = false;
+        }
+
+        internal static ListServerRequest FromConfig(ClientCacheConfiguration conf) => new (conf);
+
+        /// <summary>
+        /// Sets the public key used to verify the signature of the response.
+        /// </summary>
+        /// <param name="jwk">The key used to verify messages </param>
+        public ListServerRequest WithVerificationKey(ReadOnlyJsonWebKey jwk)
+        {            
+            VerificationKey = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+        /// <summary>
+        /// Sets the private key used to sign the request.
+        /// </summary>
+        /// <param name="jwk">The <see cref="ReadOnlyJsonWebKey"/> containing the private key used to sign the message</param>
+        /// <exception cref="ArgumentNullException"></exception>
+        public ListServerRequest WithSigningKey(ReadOnlyJsonWebKey jwk)
+        {
+            SigningAlg = jwk ?? throw new ArgumentNullException(nameof(jwk));
+            return this;
+        }
+
+        /// <summary>
+        /// Signs the <see cref="JsonWebToken"/> using the private key.
+        /// </summary>
+        /// <param name="jwt">The message to sign</param>
+        internal void SignJwt(JsonWebToken jwt)
+        {
+            jwt.SignFromJwk(SigningAlg);
+        }
+
+        /// <summary>
+        /// Verifies the signature of the <see cref="JsonWebToken"/>
+        /// </summary>
+        /// <param name="jwt"></param>
+        /// <returns>A value that indicates if the signature is verified</returns>
+        internal bool VerifyJwt(JsonWebToken jwt)
+        {
+            return jwt.VerifyFromJwk(VerificationKey);
+        }
+
+        internal IReadOnlyDictionary<string, string?> JwtHeader => SigningAlg!.JwtHeader;
+
+        ///<inheritdoc/>
+        protected override void Free()
+        {
+            if (_ownsKeys)
+            {
+                VerificationKey?.Dispose();
+                SigningAlg?.Dispose();
+            }
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.Extensions/src/VNLib.Data.Caching.Extensions.csproj b/lib/VNLib.Data.Caching.Extensions/src/VNLib.Data.Caching.Extensions.csproj
new file mode 100644
index 0000000..10dcd71
--- /dev/null
+++ b/lib/VNLib.Data.Caching.Extensions/src/VNLib.Data.Caching.Extensions.csproj
@@ -0,0 +1,41 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <GenerateDocumentationFile>True</GenerateDocumentationFile>
+    <Version>1.0.1.1</Version>
+    <Authors>Vaughn Nugent</Authors>
+    <Copyright>Copyright © 2023 Vaughn Nugent</Copyright>
+    <PackageProjectUrl>https://www.vaughnnugent.com/resources</PackageProjectUrl>
+    <SignAssembly>True</SignAssembly>
+    <AssemblyOriginatorKeyFile>\\vaughnnugent.com\Internal\Folder Redirection\vman\Documents\Programming\Software\StrongNameingKey.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <AnalysisLevel>latest-all</AnalysisLevel>
+    <Description>A libray for working with VNCache object cache clusters. </Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ErrorProne.NET.CoreAnalyzers" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="ErrorProne.NET.Structs" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="RestSharp" Version="108.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\core\lib\Hashing.Portable\src\VNLib.Hashing.Portable.csproj" />
+    <ProjectReference Include="..\..\..\..\..\core\lib\Net.Messaging.FBM\src\VNLib.Net.Messaging.FBM.csproj" />
+    <ProjectReference Include="..\..\..\..\..\core\lib\Net.Rest.Client\src\VNLib.Net.Rest.Client.csproj" />
+    <ProjectReference Include="..\..\..\..\..\core\lib\Utils\src\VNLib.Utils.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/lib/VNLib.Data.Caching.ObjectCache/LICENSE.txt b/lib/VNLib.Data.Caching.ObjectCache/LICENSE.txt
new file mode 100644
index 0000000..147bcd6
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/LICENSE.txt
@@ -0,0 +1,195 @@
+Copyright (c) 2022 Vaughn Nugent
+
+Contact information
+    Name: Vaughn Nugent
+    Email: public[at]vaughnnugent[dot]com
+	Website: https://www.vaughnnugent.com
+
+The software in this repository is licensed under the GNU Affero GPL version 3.0 (or any later version). 
+
+GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+Preamble
+
+The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate. Many developers of free software are heartened and encouraged by the resulting cooperation. However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
+
+The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
+
+An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals. This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
+
+The precise terms and conditions for copying, distribution and modification follow.
+TERMS AND CONDITIONS
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based on the Program.
+
+To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
+
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+1. Source Code.
+
+The "source code" for a work means the preferred form of the work for making modifications to it. "Object code" means any non-source form of a work.
+
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+
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+
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+2. Basic Permissions.
+
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
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+An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
+
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the work with which it is combined will remain governed by version 3 of the GNU General Public License.
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of the GNU Affero General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU Affero General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU Affero General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU Affero General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching.ObjectCache/README.md b/lib/VNLib.Data.Caching.ObjectCache/README.md
new file mode 100644
index 0000000..4326223
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/README.md
@@ -0,0 +1,8 @@
+# VNLib.Data.Caching.Extensions
+*An extension library for rapid VNCache development*
+
+#### Builds
+Debug build w/ symbols & xml docs, release builds, NuGet packages, and individually packaged source code are available on my [website](https://www.vaughnnugent.com/resources/software). All tar-gzip (.tgz) files will have an associated .sha384 appended checksum of the desired download file.
+
+## License
+Source files in for this project are licensed to you under the GNU Affero General Public License (or any later version). See the LICENSE files for more information.
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching.ObjectCache/build.readme.md b/lib/VNLib.Data.Caching.ObjectCache/build.readme.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/build.readme.md
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/BlobCache.cs b/lib/VNLib.Data.Caching.ObjectCache/src/BlobCache.cs
new file mode 100644
index 0000000..26df351
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/BlobCache.cs
@@ -0,0 +1,139 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.ObjectCache
+* File: BlobCache.cs 
+*
+* BlobCache.cs is part of VNLib.Data.Caching.ObjectCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.ObjectCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.ObjectCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+
+using VNLib.Utils.IO;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Memory;
+using VNLib.Utils.Memory.Caching;
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// A general purpose binary data storage
+    /// </summary>
+    public class BlobCache : LRUCache<string, MemoryHandle<byte>>
+    {
+        readonly IUnmangedHeap Heap;
+        readonly DirectoryInfo SwapDir;
+        readonly ILogProvider Log;
+        ///<inheritdoc/>
+        public override bool IsReadOnly { get; }
+        ///<inheritdoc/>
+        protected override int MaxCapacity { get; }
+       
+          
+        /// <summary>
+        /// Initializes a new <see cref="BlobCache"/> store
+        /// </summary>
+        /// <param name="swapDir">The <see cref="IsolatedStorageDirectory"/> to swap blob data to when cache</param>
+        /// <param name="maxCapacity">The maximum number of items to keep in memory</param>
+        /// <param name="log">A <see cref="ILogProvider"/> to write log data to</param>
+        /// <param name="heap">A <see cref="IUnmangedHeap"/> to allocate buffers and store <see cref="BlobItem"/> data in memory</param>
+        public BlobCache(DirectoryInfo swapDir, int maxCapacity, ILogProvider log, IUnmangedHeap heap)
+            :base(StringComparer.Ordinal)
+        {
+            IsReadOnly = false;
+            MaxCapacity = maxCapacity;
+            SwapDir = swapDir;
+            //Update the lookup table size
+            LookupTable.EnsureCapacity(maxCapacity);
+            //Set default heap if not specified
+            Heap = heap;
+            Log = log;
+        }
+        ///<inheritdoc/>
+        protected override bool CacheMiss(string key, [NotNullWhen(true)] out MemoryHandle<byte>? value)
+        {
+            value = null;
+            return false;
+        }
+        ///<inheritdoc/>
+        protected override void Evicted(KeyValuePair<string, MemoryHandle<byte>> evicted)
+        {
+            //Dispose the blob
+            evicted.Value.Dispose();
+        }
+        /// <summary>
+        /// If the <see cref="BlobItem"/> is found in the store, changes the key 
+        /// that referrences the blob. 
+        /// </summary>
+        /// <param name="currentKey">The key that currently referrences the blob in the store</param>
+        /// <param name="newKey">The new key that will referrence the blob</param>
+        /// <param name="blob">The <see cref="BlobItem"/> if its found in the store</param>
+        /// <returns>True if the record was found and the key was changes</returns>
+        public bool TryChangeKey(string currentKey, string newKey, [NotNullWhen(true)] out MemoryHandle<byte>? blob)
+        {
+            if (LookupTable.Remove(currentKey, out LinkedListNode<KeyValuePair<string, MemoryHandle<byte>>>? node))
+            {
+                //Remove the node from the ll
+                List.Remove(node);
+                //Update the node kvp
+                blob = node.Value.Value;
+                node.Value = new KeyValuePair<string, MemoryHandle<byte>>(newKey, blob);
+                //Add to end of list
+                List.AddLast(node);
+                //Re-add to lookup table with new key
+                LookupTable.Add(newKey, node);
+                return true;
+            }
+            blob = null;
+            return false;
+        }
+        /// <summary>
+        /// Removes the <see cref="BlobItem"/> from the store without disposing the blobl
+        /// </summary>
+        /// <param name="key">The key that referrences the <see cref="BlobItem"/> in the store</param>
+        /// <returns>A value indicating if the blob was removed</returns>
+        public override bool Remove(string key)
+        {
+            //Remove the item from the lookup table and if it exists, remove the node from the list
+            if (LookupTable.Remove(key, out LinkedListNode<KeyValuePair<string, MemoryHandle<byte>>>? node))
+            {
+                //Remove the new from the list
+                List.Remove(node);
+                //dispose the buffer
+                node.Value.Value.Dispose();
+                return true;
+            }
+            return false;
+        }
+        /// <summary>
+        /// Removes and disposes all blobl elements in cache (or in the backing store)
+        /// </summary>
+        public override void Clear()
+        {
+            foreach (MemoryHandle<byte> blob in List.Select(kp => kp.Value))
+            {
+                blob.Dispose();
+            }
+            base.Clear();
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/BlobItem.cs b/lib/VNLib.Data.Caching.ObjectCache/src/BlobItem.cs
new file mode 100644
index 0000000..728875f
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/BlobItem.cs
@@ -0,0 +1,207 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.ObjectCache
+* File: BlobItem.cs 
+*
+* BlobItem.cs is part of VNLib.Data.Caching.ObjectCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.ObjectCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.ObjectCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+using VNLib.Utils;
+using VNLib.Utils.IO;
+using VNLib.Utils.Memory;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Extensions;
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// A general purpose binary storage item 
+    /// </summary>
+    public class BlobItem //: VnDisposeable
+    {
+        /*
+        private static readonly JoinableTaskContext JTX = new();
+        private static readonly Semaphore CentralSwapLock = new(Environment.ProcessorCount, Environment.ProcessorCount);
+
+        private readonly VnMemoryStream _loadedData;
+        private bool _loaded;
+
+        /// <summary>
+        /// The time the blob was last modified
+        /// </summary>
+        public DateTimeOffset LastAccessed { get; private set; }
+     
+
+        /// <summary>
+        /// Gets the current size of the file (in bytes) as an atomic operation
+        /// </summary>
+        public int FileSize => (int)_loadedData.Length;
+        /// <summary>
+        /// The operation synchronization lock
+        /// </summary>
+        public AsyncReaderWriterLock OpLock { get; }
+        /// <summary>
+        /// Initializes a new <see cref="BlobItem"/>
+        /// </summary>
+        /// <param name="heap">The heap to allocate buffers from</param>
+        internal BlobItem(IUnmangedHeap heap)
+        {
+            _loadedData = new(heap);
+            OpLock = new AsyncReaderWriterLock(JTX);
+            _loaded = true;
+            LastAccessed = DateTimeOffset.UtcNow;
+        }
+        ///<inheritdoc/>
+        protected override void Free()
+        {
+            _loadedData.Dispose();
+            OpLock.Dispose();
+        }
+
+        /// <summary>
+        /// Reads data from the internal buffer and copies it to the specified buffer.
+        /// Use the <see cref="FileSize"/> property to obtain the size of the internal buffer
+        /// </summary>
+        /// <param name="buffer">The buffer to copy data to</param>
+        /// <returns>When completed, the number of bytes copied to the buffer</returns>
+        public int Read(Span<byte> buffer)
+        {
+            //Make sure the blob has been swapped back into memory
+            if (!_loaded)
+            {
+                throw new InvalidOperationException("The blob was not loaded from the disk");
+            }
+            //Read all data from the buffer and write it to the output buffer
+            _loadedData.AsSpan().CopyTo(buffer);
+            //Update last-accessed
+            LastAccessed = DateTimeOffset.UtcNow;
+            return (int)_loadedData.Length;
+        }
+        /// <summary>
+        /// Overwrites the internal buffer with the contents of the supplied buffer
+        /// </summary>
+        /// <param name="buffer">The buffer containing data to store within the blob</param>
+        /// <returns>A <see cref="ValueTask"/> that completes when write access has been granted and copied</returns>
+        /// <exception cref="InvalidOperationException"></exception>
+        public void Write(ReadOnlySpan<byte> buffer)
+        {
+            //Make sure the blob has been swapped back into memory
+            if (!_loaded)
+            {
+                throw new InvalidOperationException("The blob was not loaded from the disk");
+            }
+            //Reset the buffer
+            _loadedData.SetLength(buffer.Length);
+            _loadedData.Seek(0, SeekOrigin.Begin);
+            _loadedData.Write(buffer);
+            LastAccessed = DateTimeOffset.UtcNow;
+        }
+
+        /// <summary>
+        /// Writes the contents of the memory buffer to its designated file on the disk
+        /// </summary>
+        /// <param name="heap">The heap to allocate buffers from</param>
+        /// <param name="swapDir">The <see cref="IsolatedStorageDirectory"/> that stores the file</param>
+        /// <param name="filename">The name of the file to write data do</param>
+        /// <param name="log">A log to write errors to</param>
+        /// <returns>A task that completes when the swap to disk is complete</returns>
+        internal async Task SwapToDiskAsync(IUnmangedHeap heap, DirectoryInfo swapDir, string filename, ILogProvider log)
+        {
+            try
+            {
+                //Wait for write lock
+                await using (AsyncReaderWriterLock.Releaser releaser = await OpLock.WriteLockAsync())
+                {
+                    //Enter swap lock
+                    await CentralSwapLock;
+                    try
+                    {
+                        //Open swap file data stream
+                        await using FileStream swapFile = swapDir.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.ReadWrite, bufferSize: 8128);
+                        //reset swap file
+                        swapFile.SetLength(0);
+                        //Seek loaded-data back to 0 before writing
+                        _loadedData.Seek(0, SeekOrigin.Begin);
+                        //Write loaded data to disk
+                        await _loadedData.CopyToAsync(swapFile, 8128, heap);
+                    }
+                    finally
+                    {
+                        CentralSwapLock.Release();
+                    }
+                    //Release memory held by stream
+                    _loadedData.SetLength(0);
+                    //Clear loaded flag
+                    _loaded = false;
+                    LastAccessed = DateTimeOffset.UtcNow;
+                }
+                log.Debug("Blob {name} swapped to disk", filename);
+            }
+            catch(Exception ex)
+            {
+                log.Error(ex, "Blob swap to disk error");
+            }
+        }
+        /// <summary>
+        /// Reads the contents of the blob into a memory buffer from its designated file on disk
+        /// </summary>
+        /// <param name="heap">The heap to allocate buffers from</param>
+        /// <param name="swapDir">The <see cref="IsolatedStorageDirectory"/> that stores the file</param>
+        /// <param name="filename">The name of the file to write the blob data to</param>
+        /// <param name="log">A log to write errors to</param>
+        /// <returns>A task that completes when the swap from disk is complete</returns>
+        internal async Task SwapFromDiskAsync(IUnmangedHeap heap, DirectoryInfo swapDir, string filename, ILogProvider log)
+        {
+            try
+            {
+                //Wait for write lock
+                await using (AsyncReaderWriterLock.Releaser releaser = await OpLock.WriteLockAsync())
+                {
+                    //Enter swap lock
+                    await CentralSwapLock;
+                    try
+                    {
+                        //Open swap file data stream
+                        await using FileStream swapFile = swapDir.OpenFile(filename, FileMode.OpenOrCreate, FileAccess.Read, bufferSize:8128);
+                        //Copy from disk to memory
+                        await swapFile.CopyToAsync(_loadedData, 8128, heap);
+                    }
+                    finally
+                    {
+                        CentralSwapLock.Release();
+                    }
+                    //Set loaded flag
+                    _loaded = true;
+                    LastAccessed = DateTimeOffset.UtcNow;
+                }
+                log.Debug("Blob {name} swapped from disk", filename);
+            }
+            catch(Exception ex)
+            {
+                log.Error(ex, "Blob swap from disk error");
+            }
+        }
+        */
+    }
+}
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/CacheListener.cs b/lib/VNLib.Data.Caching.ObjectCache/src/CacheListener.cs
new file mode 100644
index 0000000..7f544e1
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/CacheListener.cs
@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.ObjectCache
+* File: CacheListener.cs 
+*
+* CacheListener.cs is part of VNLib.Data.Caching.ObjectCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.ObjectCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.ObjectCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.IO;
+
+using VNLib.Utils.Memory;
+using VNLib.Net.Messaging.FBM.Server;
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// A base implementation of a memory/disk LRU data cache FBM listener
+    /// </summary>
+    public abstract class CacheListener : FBMListenerBase
+    {
+        /// <summary>
+        /// The directory swap files will be stored
+        /// </summary>
+        public DirectoryInfo? Directory { get; private set; }
+        /// <summary>
+        /// The Cache store to access data blobs
+        /// </summary>
+        protected BlobCache? Cache { get; private set; }
+        /// <summary>
+        /// The <see cref="IUnmangedHeap"/> to allocate buffers from
+        /// </summary>
+        protected IUnmangedHeap? Heap { get; private set; }
+      
+        /// <summary>
+        /// Initializes the <see cref="Cache"/> data store
+        /// </summary>
+        /// <param name="dir">The directory to swap cache records to</param>
+        /// <param name="cacheSize">The size of the LRU cache</param>
+        /// <param name="heap">The heap to allocate buffers from</param>
+        protected void InitCache(DirectoryInfo dir, int cacheSize, IUnmangedHeap heap)
+        {
+            Heap = heap;
+            Cache = new(dir, cacheSize, Log, Heap);
+            Directory = dir;
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/ChangeEvent.cs b/lib/VNLib.Data.Caching.ObjectCache/src/ChangeEvent.cs
new file mode 100644
index 0000000..7ee4427
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/ChangeEvent.cs
@@ -0,0 +1,42 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.ObjectCache
+* File: ChangeEvent.cs 
+*
+* ChangeEvent.cs is part of VNLib.Data.Caching.ObjectCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.ObjectCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.ObjectCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+namespace VNLib.Data.Caching.ObjectCache
+{
+    /// <summary>
+    /// An event object that is passed when change events occur
+    /// </summary>
+    public class ChangeEvent
+    {
+        public readonly string CurrentId;
+        public readonly string? AlternateId;
+        public readonly bool Deleted;
+        internal ChangeEvent(string id, string? alternate, bool deleted)
+        {
+            CurrentId = id;
+            AlternateId = alternate;
+            Deleted = deleted;
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/ObjectCacheStore.cs b/lib/VNLib.Data.Caching.ObjectCache/src/ObjectCacheStore.cs
new file mode 100644
index 0000000..514d00b
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/ObjectCacheStore.cs
@@ -0,0 +1,263 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching.ObjectCache
+* File: ObjectCacheStore.cs 
+*
+* ObjectCacheStore.cs is part of VNLib.Data.Caching.ObjectCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching.ObjectCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching.ObjectCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+using VNLib.Utils.Async;
+using VNLib.Utils.Memory;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Extensions;
+using VNLib.Net.Messaging.FBM.Server;
+using static VNLib.Data.Caching.Constants;
+
+namespace VNLib.Data.Caching.ObjectCache
+{
+    public delegate ReadOnlySpan<byte> GetBodyDataCallback<T>(T state);
+
+    /// <summary>
+    /// A <see cref="FBMListener"/> implementation of a <see cref="CacheListener"/>
+    /// </summary>
+    public class ObjectCacheStore : CacheListener, IDisposable
+    {
+        private readonly SemaphoreSlim StoreLock;
+        private bool disposedValue;
+
+        ///<inheritdoc/>
+        protected override ILogProvider Log { get; }
+
+        /// <summary>
+        /// A queue that stores update and delete events
+        /// </summary>
+        public AsyncQueue<ChangeEvent> EventQueue { get; }
+
+        /// <summary>
+        /// Initialzies a new <see cref="ObjectCacheStore"/>
+        /// </summary>
+        /// <param name="dir">The <see cref="DirectoryInfo"/> to store blob files to</param>
+        /// <param name="cacheMax"></param>
+        /// <param name="log"></param>
+        /// <param name="heap"></param>
+        /// <param name="singleReader">A value that indicates if a single thread is processing events</param>
+        public ObjectCacheStore(DirectoryInfo dir, int cacheMax, ILogProvider log, IUnmangedHeap heap, bool singleReader)
+        {
+            Log = log;
+            //We can use a single writer and single reader in this context
+            EventQueue = new(true, singleReader);
+            InitCache(dir, cacheMax, heap);
+            InitListener(heap);
+            StoreLock = new(1,1);
+        }
+
+        ///<inheritdoc/>
+        protected override async Task ProcessAsync(FBMContext context, object? userState, CancellationToken cancellationToken)
+        {
+            try
+            {
+                //Get the action header
+                string action = context.Method();
+                //Optional newid header
+                string? alternateId = context.NewObjectId();
+
+                switch (action)
+                {
+                    case Actions.Get:
+                        {
+                            //Get the object-id header
+                            string objectId = context.ObjectId();
+                            //Take lock on store 
+                            using SemSlimReleaser rel = await StoreLock.GetReleaserAsync(cancellationToken: cancellationToken);
+                            if (Cache!.TryGetValue(objectId, out MemoryHandle<byte>? data))
+                            {
+                                //Set the status code and write the buffered data to the response buffer
+                                context.CloseResponse(ResponseCodes.Okay);
+                                //Copy data to response buffer
+                                context.Response.WriteBody(data.Span);
+                            }
+                            else
+                            {
+                                context.CloseResponse(ResponseCodes.NotFound);
+                            }
+                        }
+                        break;
+                    case Actions.AddOrUpdate:
+                        {
+                            //Get the object-id header
+                            string objectId = context.ObjectId();
+                            //Add/update a blob async
+                            await AddOrUpdateBlobAsync(objectId, alternateId, static context => context.Request.BodyData, context);
+                            //Notify update the event bus
+                            await EventQueue.EnqueueAsync(new(objectId, alternateId, false), cancellationToken);
+                            //Set status code
+                            context.CloseResponse(ResponseCodes.Okay);                           
+                        }
+                        break;
+                    case Actions.Delete:
+                        {
+                            //Get the object-id header
+                            string objectId = context.ObjectId();
+                           
+                            if (await DeleteItemAsync(objectId))
+                            {
+                                //Notify deleted
+                                await EventQueue.EnqueueAsync(new(objectId, null, true), cancellationToken);
+                                //Set status header
+                                context.CloseResponse(ResponseCodes.Okay);
+                            }
+                            else
+                            {
+                                //Set status header
+                                context.CloseResponse(ResponseCodes.NotFound);
+                            }
+                        }
+                        break;
+                    // event queue dequeue request
+                    case Actions.Dequeue:
+                        {
+                            //If no event bus is registered, then this is not a legal command
+                            if (userState is not AsyncQueue<ChangeEvent> eventBus)
+                            {
+                                context.CloseResponse(ResponseCodes.NotFound);
+                                break;
+                            }
+                            //Wait for a new message to process
+                            ChangeEvent ev = await eventBus.DequeueAsync(cancellationToken);
+                            if (ev.Deleted)
+                            {
+                                context.CloseResponse("deleted");
+                                context.Response.WriteHeader(ObjectId, ev.CurrentId);
+                            }
+                            else
+                            {
+                                //Changed
+                                context.CloseResponse("modified");
+                                context.Response.WriteHeader(ObjectId, ev.CurrentId);
+                                //Set old id if an old id is set
+                                if (ev.CurrentId != null)
+                                {
+                                    context.Response.WriteHeader(NewObjectId, ev.AlternateId);
+                                }
+                            }
+                        }
+                        break;
+                }
+            }
+            catch (OperationCanceledException)
+            {
+                throw;
+            }
+            catch(Exception ex)
+            {
+                //Log error and set error status code
+                Log.Error(ex);
+                context.CloseResponse(ResponseCodes.Error);
+            }
+        }
+
+        /// <summary>
+        /// Asynchronously deletes a previously stored item
+        /// </summary>
+        /// <param name="id">The id of the object to delete</param>
+        /// <returns>A task that completes when the item has been deleted</returns>
+        public async Task<bool> DeleteItemAsync(string id)
+        {
+            using SemSlimReleaser rel = await StoreLock.GetReleaserAsync();
+            return Cache!.Remove(id);
+        }
+        
+        /// <summary>
+        /// Asynchronously adds or updates an object in the store and optionally update's its id
+        /// </summary>
+        /// <param name="objectId">The current (or old) id of the object</param>
+        /// <param name="alternateId">An optional id to update the blob to</param>
+        /// <param name="bodyData">A callback that returns the data for the blob</param>
+        /// <param name="state">The state parameter to pass to the data callback</param>
+        /// <returns></returns>
+        public async Task AddOrUpdateBlobAsync<T>(string objectId, string? alternateId, GetBodyDataCallback<T> bodyData, T state)
+        {
+            MemoryHandle<byte>? blob;
+            //See if new/alt session id was specified
+            if (string.IsNullOrWhiteSpace(alternateId))
+            {
+                //Take lock on store 
+                using SemSlimReleaser rel = await StoreLock.GetReleaserAsync();
+                //See if blob exists
+                if (!Cache!.TryGetValue(objectId, out blob))
+                {
+                    //If not, create new blob and add to store
+                    blob = Heap.AllocAndCopy(bodyData(state));
+                    Cache.Add(objectId, blob);
+                }
+                else
+                {
+                    //Reset the buffer state
+                    blob.WriteAndResize(bodyData(state));
+                }
+            }
+            //Need to change the id of the record
+            else
+            {
+                //Take lock on store 
+                using SemSlimReleaser rel = await StoreLock.GetReleaserAsync();
+                //Try to change the blob key
+                if (!Cache!.TryChangeKey(objectId, alternateId, out blob))
+                {
+                    //Blob not found, create new blob
+                    blob = Heap.AllocAndCopy(bodyData(state));
+                    Cache.Add(alternateId, blob);
+                }
+                else
+                {
+                    //Reset the buffer state
+                    blob.WriteAndResize(bodyData(state));
+                }
+            }
+        }
+        
+        ///<inheritdoc/>
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!disposedValue)
+            {
+                if (disposing)
+                {
+                    Cache?.Clear();
+                }
+                
+                StoreLock.Dispose();
+                
+                disposedValue = true;
+            }
+        }
+        ///<inheritdoc/>
+        public void Dispose()
+        {
+            // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+            Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching.ObjectCache/src/VNLib.Data.Caching.ObjectCache.csproj b/lib/VNLib.Data.Caching.ObjectCache/src/VNLib.Data.Caching.ObjectCache.csproj
new file mode 100644
index 0000000..119622f
--- /dev/null
+++ b/lib/VNLib.Data.Caching.ObjectCache/src/VNLib.Data.Caching.ObjectCache.csproj
@@ -0,0 +1,34 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    
+    <Authors>Vaughn Nugent</Authors>
+    <Copyright>Copyright © 2023 Vaughn Nugent</Copyright>
+    <Nullable>enable</Nullable>
+    <GenerateDocumentationFile>True</GenerateDocumentationFile>
+    <PackageProjectUrl>https://www.vaughnnugent.com/resources</PackageProjectUrl>
+    <AssemblyVersion>1.0.0.1</AssemblyVersion>
+    <Version>1.0.1.1</Version>
+    <AnalysisLevel>latest-all</AnalysisLevel>
+    <SignAssembly>True</SignAssembly>
+    <AssemblyOriginatorKeyFile>\\vaughnnugent.com\Internal\Folder Redirection\vman\Documents\Programming\Software\StrongNameingKey.snk</AssemblyOriginatorKeyFile>
+    <Description>Provides server-side object-cache related infrastructure</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ErrorProne.NET.CoreAnalyzers" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="ErrorProne.NET.Structs" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\VNLib.Data.Caching\src\VNLib.Data.Caching.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/lib/VNLib.Data.Caching/LICENSE.txt b/lib/VNLib.Data.Caching/LICENSE.txt
new file mode 100644
index 0000000..147bcd6
--- /dev/null
+++ b/lib/VNLib.Data.Caching/LICENSE.txt
@@ -0,0 +1,195 @@
+Copyright (c) 2022 Vaughn Nugent
+
+Contact information
+    Name: Vaughn Nugent
+    Email: public[at]vaughnnugent[dot]com
+	Website: https://www.vaughnnugent.com
+
+The software in this repository is licensed under the GNU Affero GPL version 3.0 (or any later version). 
+
+GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+Preamble
+
+The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate. Many developers of free software are heartened and encouraged by the resulting cooperation. However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
+
+The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
+
+An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals. This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
+
+The precise terms and conditions for copying, distribution and modification follow.
+TERMS AND CONDITIONS
+0. Definitions.
+
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+
+"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
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+
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+A "covered work" means either the unmodified Program or a work based on the Program.
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+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+8. Termination.
+
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
+
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the work with which it is combined will remain governed by version 3 of the GNU General Public License.
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of the GNU Affero General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU Affero General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU Affero General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU Affero General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching/README.md b/lib/VNLib.Data.Caching/README.md
new file mode 100644
index 0000000..41d2f8f
--- /dev/null
+++ b/lib/VNLib.Data.Caching/README.md
@@ -0,0 +1,8 @@
+# VNLib.Data.Caching
+*Data structures and abstractions for implementing fast and reliable netwokred key-value data-stores*
+
+#### Builds
+Debug build w/ symbols & xml docs, release builds, NuGet packages, and individually packaged source code are available on my [website](https://www.vaughnnugent.com/resources/software). All tar-gzip (.tgz) files will have an associated .sha384 appended checksum of the desired download file.
+
+## License
+Source files in for this project are licensed to you under the GNU Affero General Public License (or any later version). See the LICENSE files for more information.
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching/build.readme.md b/lib/VNLib.Data.Caching/build.readme.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/VNLib.Data.Caching/build.readme.md
diff --git a/lib/VNLib.Data.Caching/src/ClientExtensions.cs b/lib/VNLib.Data.Caching/src/ClientExtensions.cs
new file mode 100644
index 0000000..a207886
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/ClientExtensions.cs
@@ -0,0 +1,328 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: ClientExtensions.cs 
+*
+* ClientExtensions.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.IO;
+using System.Linq;
+using System.Buffers;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+
+using VNLib.Utils.Logging;
+using VNLib.Net.Messaging.FBM;
+using VNLib.Net.Messaging.FBM.Client;
+using VNLib.Net.Messaging.FBM.Server;
+using VNLib.Data.Caching.Exceptions;
+
+using static VNLib.Data.Caching.Constants;
+
+namespace VNLib.Data.Caching
+{
+
+    /// <summary>
+    /// Provides caching extension methods for <see cref="FBMClient"/>
+    /// </summary>
+    public static class ClientExtensions
+    {
+        private static readonly JsonSerializerOptions LocalOptions = new()
+        {
+            DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
+            NumberHandling = JsonNumberHandling.Strict,
+            ReadCommentHandling = JsonCommentHandling.Disallow,
+            WriteIndented = false,
+            DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+            IgnoreReadOnlyFields = true,
+            PropertyNameCaseInsensitive = true,
+            IncludeFields = false,
+
+            //Use small buffers
+            DefaultBufferSize = 128
+        };
+
+        private static void LogDebug(this FBMClient client, string message, params object?[] args)
+        {
+            if (client.Config.DebugLog != null)
+            {
+                client.Config.DebugLog.Debug($"[CACHE] : {message}", args);
+            }
+        }
+
+        /// <summary>
+        /// Gets an object from the server if it exists
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="client"></param>
+        /// <param name="objectId">The id of the object to get</param>
+        /// <param name="cancellationToken">A token to cancel the operation</param>
+        /// <returns>A task that completes to return the results of the response payload</returns>
+        /// <exception cref="JsonException"></exception>
+        /// <exception cref="OutOfMemoryException"></exception>
+        /// <exception cref="InvalidStatusException"></exception>
+        /// <exception cref="ObjectDisposedException"></exception>
+        /// <exception cref="InvalidResponseException"></exception>
+        public static async Task<T?> GetObjectAsync<T>(this FBMClient client, string objectId, CancellationToken cancellationToken = default)
+        {
+            _ = client ?? throw new ArgumentNullException(nameof(client));
+            
+            client.LogDebug("Getting object {id}", objectId);
+            
+            //Rent a new request
+            FBMRequest request = client.RentRequest();
+            try
+            {
+                //Set action as get/create
+                request.WriteHeader(HeaderCommand.Action, Actions.Get);
+                //Set session-id header
+                request.WriteHeader(Constants.ObjectId, objectId);
+                
+                //Make request
+                using FBMResponse response = await client.SendAsync(request, cancellationToken);
+
+                response.ThrowIfNotSet();
+                //Get the status code
+                ReadOnlyMemory<char> status = response.Headers.FirstOrDefault(static a => a.Key == HeaderCommand.Status).Value;
+                if (status.Span.Equals(ResponseCodes.Okay, StringComparison.Ordinal))
+                {
+                    return JsonSerializer.Deserialize<T>(response.ResponseBody, LocalOptions);
+                }
+                //Session may not exist on the server yet
+                if (status.Span.Equals(ResponseCodes.NotFound, StringComparison.Ordinal))
+                {
+                    return default;
+                }
+                throw new InvalidStatusException("Invalid status code recived for object get request", status.ToString());
+            }
+            finally
+            {
+                client.ReturnRequest(request);
+            }
+        }
+
+        /// <summary>
+        /// Updates the state of the object, and optionally updates the ID of the object. The data 
+        /// parameter is serialized, buffered, and streamed to the remote server
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="client"></param>
+        /// <param name="objectId">The id of the object to update or replace</param>
+        /// <param name="newId">An optional parameter to specify a new ID for the old object</param>
+        /// <param name="data">The payload data to serialize and set as the data state of the session</param>
+        /// <param name="cancellationToken">A token to cancel the operation</param>
+        /// <returns>A task that resolves when the server responds</returns>
+        /// <exception cref="JsonException"></exception>
+        /// <exception cref="OutOfMemoryException"></exception>
+        /// <exception cref="InvalidStatusException"></exception>
+        /// <exception cref="ObjectDisposedException"></exception>
+        /// <exception cref="InvalidResponseException"></exception>
+        /// <exception cref="MessageTooLargeException"></exception>
+        /// <exception cref="ObjectNotFoundException"></exception>
+        public static async Task AddOrUpdateObjectAsync<T>(this FBMClient client, string objectId, string? newId, T data, CancellationToken cancellationToken = default)
+        {
+            _ = client ?? throw new ArgumentNullException(nameof(client));
+            
+            client.LogDebug("Updating object {id}, newid {nid}", objectId, newId);
+           
+            //Rent a new request
+            FBMRequest request = client.RentRequest();
+            try
+            {
+                //Set action as get/create
+                request.WriteHeader(HeaderCommand.Action, Actions.AddOrUpdate);
+                //Set session-id header
+                request.WriteHeader(Constants.ObjectId, objectId);
+                //if new-id set, set the new-id header
+                if (!string.IsNullOrWhiteSpace(newId))
+                {
+                    request.WriteHeader(Constants.NewObjectId, newId);
+                }
+                //Get the body writer for the message
+                IBufferWriter<byte> bodyWriter = request.GetBodyWriter();
+                //Write json data to the message
+                using (Utf8JsonWriter jsonWriter = new(bodyWriter))
+                {
+                    JsonSerializer.Serialize(jsonWriter, data, LocalOptions);
+                }
+
+                //Make request
+                using FBMResponse response = await client.SendAsync(request, cancellationToken);
+
+                response.ThrowIfNotSet();
+                //Get the status code
+                ReadOnlyMemory<char> status = response.Headers.FirstOrDefault(static a => a.Key == HeaderCommand.Status).Value;
+                //Check status code
+                if (status.Span.Equals(ResponseCodes.Okay, StringComparison.OrdinalIgnoreCase))
+                {
+                    return;
+                }
+                else if(status.Span.Equals(ResponseCodes.NotFound, StringComparison.OrdinalIgnoreCase))
+                {
+                    throw new ObjectNotFoundException($"object {objectId} not found on remote server");
+                }
+                //Invalid status
+                throw new InvalidStatusException("Invalid status code recived for object upsert request", status.ToString());
+            }
+            finally
+            {
+                //Return the request(clears data and reset)
+                client.ReturnRequest(request);
+            }
+        }
+        
+        /// <summary>
+        /// Asynchronously deletes an object in the remote store
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="objectId">The id of the object to update or replace</param>
+        /// <param name="cancellationToken">A token to cancel the operation</param>
+        /// <returns>A task that resolves when the operation has completed</returns>
+        /// <exception cref="InvalidStatusException"></exception>
+        /// <exception cref="ObjectDisposedException"></exception>
+        /// <exception cref="InvalidResponseException"></exception>
+        /// <exception cref="ObjectNotFoundException"></exception>
+        public static async Task DeleteObjectAsync(this FBMClient client, string objectId, CancellationToken cancellationToken = default)
+        {
+            _ = client ?? throw new ArgumentNullException(nameof(client));
+
+            client.LogDebug("Deleting object {id}", objectId);
+            //Rent a new request
+            FBMRequest request = client.RentRequest();
+            try
+            {
+                //Set action as delete
+                request.WriteHeader(HeaderCommand.Action, Actions.Delete);
+                //Set session-id header
+                request.WriteHeader(Constants.ObjectId, objectId);
+
+                //Make request
+                using FBMResponse response = await client.SendAsync(request, cancellationToken);
+
+                response.ThrowIfNotSet();
+                //Get the status code
+                ReadOnlyMemory<char> status = response.Headers.FirstOrDefault(static a => a.Key == HeaderCommand.Status).Value;
+                if (status.Span.Equals(ResponseCodes.Okay, StringComparison.Ordinal))
+                {
+                    return;
+                }
+                else if(status.Span.Equals(ResponseCodes.NotFound, StringComparison.OrdinalIgnoreCase))
+                {
+                    throw new ObjectNotFoundException($"object {objectId} not found on remote server");
+                }
+                throw new InvalidStatusException("Invalid status code recived for object get request", status.ToString());
+            }
+            finally
+            {
+                client.ReturnRequest(request);
+            }
+        }
+
+        /// <summary>
+        /// Dequeues a change event from the server event queue for the current connection, or waits until a change happens
+        /// </summary>
+        /// <param name="client"></param>
+        /// <param name="cancellationToken">A token to cancel the deuque operation</param>
+        /// <returns>A <see cref="KeyValuePair{TKey, TValue}"/> that contains the modified object id and optionally its new id</returns>
+        public static async Task<WaitForChangeResult> WaitForChangeAsync(this FBMClient client, CancellationToken cancellationToken = default)
+        {
+            //Rent a new request
+            FBMRequest request = client.RentRequest();
+            try
+            {
+                //Set action as event dequeue to dequeue a change event
+                request.WriteHeader(HeaderCommand.Action, Actions.Dequeue);
+
+                //Make request
+                using FBMResponse response = await client.SendAsync(request, cancellationToken);
+
+                response.ThrowIfNotSet();
+
+                return new()
+                {
+                    Status = response.Headers.FirstOrDefault(static a => a.Key == HeaderCommand.Status).Value.ToString(),
+                    CurrentId = response.Headers.SingleOrDefault(static v => v.Key == Constants.ObjectId).Value.ToString(),
+                    NewId = response.Headers.SingleOrDefault(static v => v.Key == Constants.NewObjectId).Value.ToString()
+                };
+            }
+            finally
+            {
+                client.ReturnRequest(request);
+            }
+        }
+
+        /// <summary>
+        /// Gets the Object-id for the request message, or throws an <see cref="InvalidOperationException"/> if not specified
+        /// </summary>
+        /// <param name="context"></param>
+        /// <returns>The id of the object requested</returns>
+        /// <exception cref="InvalidOperationException"></exception>
+        public static string ObjectId(this FBMContext context)
+        {
+            return context.Request.Headers.First(static kvp => kvp.Key == Constants.ObjectId).Value.ToString();
+        }
+        /// <summary>
+        /// Gets the new ID of the object if specified from the request. Null if the request did not specify an id update
+        /// </summary>
+        /// <param name="context"></param>
+        /// <returns>The new ID of the object if speicifed, null otherwise</returns>
+        public static string? NewObjectId(this FBMContext context)
+        {
+            return context.Request.Headers.FirstOrDefault(static kvp => kvp.Key == Constants.NewObjectId).Value.ToString();
+        }
+        /// <summary>
+        /// Gets the request method for the request
+        /// </summary>
+        /// <param name="context"></param>
+        /// <returns>The request method string</returns>
+        public static string Method(this FBMContext context)
+        {
+            return context.Request.Headers.First(static kvp => kvp.Key == HeaderCommand.Action).Value.ToString();
+        }
+        /// <summary>
+        /// Closes a response with a status code
+        /// </summary>
+        /// <param name="context"></param>
+        /// <param name="responseCode">The status code to send to the client</param>
+        public static void CloseResponse(this FBMContext context, string responseCode)
+        {
+            context.Response.WriteHeader(HeaderCommand.Status, responseCode);
+        }
+
+
+        /// <summary>
+        /// Initializes the worker for a reconnect policy and returns an object that can listen for changes
+        /// and configure the connection as necessary
+        /// </summary>
+        /// <param name="worker"></param>
+        /// <param name="retryDelay">The amount of time to wait between retries</param>
+        /// <param name="serverUri">The uri to reconnect the client to</param>
+        /// <returns>A <see cref="ClientRetryManager{T}"/> for listening for retry events</returns>
+        public static ClientRetryManager<T> SetReconnectPolicy<T>(this T worker, TimeSpan retryDelay, Uri serverUri) where T: IStatefulConnection
+        {
+            //Return new manager
+            return new (worker, retryDelay, serverUri);
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/ClientRetryManager.cs b/lib/VNLib.Data.Caching/src/ClientRetryManager.cs
new file mode 100644
index 0000000..5cee583
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/ClientRetryManager.cs
@@ -0,0 +1,107 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: ClientRetryManager.cs 
+*
+* ClientRetryManager.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.Threading.Tasks;
+using System.Security.Cryptography;
+
+using VNLib.Utils;
+using VNLib.Net.Messaging.FBM.Client;
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// Manages a <see cref="FBMClientWorkerBase"/> reconnect policy
+    /// </summary>
+    public class ClientRetryManager<T> : VnDisposeable where T: IStatefulConnection
+    {
+        const int RetryRandMaxMsDelay = 1000;
+
+        private readonly TimeSpan RetryDelay;
+        private readonly T Client;
+        private readonly Uri ServerUri;
+
+        internal ClientRetryManager(T worker, TimeSpan delay, Uri serverUri)
+        {
+            this.Client = worker;
+            this.RetryDelay = delay;
+            this.ServerUri = serverUri;
+            //Register disconnect listener
+            worker.ConnectionClosed += Worker_Disconnected;
+        }
+
+        private void Worker_Disconnected(object? sender, EventArgs args)
+        {
+            //Exec retry on exit
+            _ = RetryAsync().ConfigureAwait(false);
+        }
+       
+
+        /// <summary>
+        /// Raised before client is to be reconnected
+        /// </summary>
+        public event Action<T>? OnBeforeReconnect;
+        /// <summary>
+        /// Raised when the client fails to reconnect. Should return a value that instructs the 
+        /// manager to reconnect
+        /// </summary>
+        public event Func<T, Exception, bool>? OnReconnectFailed;
+
+        async Task RetryAsync()
+        {
+            
+            //Begin random delay with retry ms
+            int randomDelayMs = (int)RetryDelay.TotalMilliseconds;
+            //random delay to add to prevent retry-storm
+            randomDelayMs += RandomNumberGenerator.GetInt32(RetryRandMaxMsDelay);
+            //Retry loop
+            bool retry = true;
+            while (retry)
+            {
+                try
+                {
+                    //Inform Listener for the retry
+                    OnBeforeReconnect?.Invoke(Client);
+                    //wait for delay before reconnecting
+                    await Task.Delay(randomDelayMs);
+                    //Reconnect async
+                    await Client.ConnectAsync(ServerUri).ConfigureAwait(false);
+                    break;
+                }
+                catch (Exception Ex)
+                {
+                    //Invoke error handler, may be null, incase exit
+                    retry = OnReconnectFailed?.Invoke(Client, Ex) ?? false;
+                }
+            }
+        }
+
+        ///<inheritdoc/>
+        protected override void Free()
+        {
+            //Unregister the event listener
+            Client.ConnectionClosed -= Worker_Disconnected;
+        }
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/Constants.cs b/lib/VNLib.Data.Caching/src/Constants.cs
new file mode 100644
index 0000000..3fb87e0
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/Constants.cs
@@ -0,0 +1,56 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: Constants.cs 
+*
+* Constants.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+
+using VNLib.Net.Messaging.FBM;
+
+namespace VNLib.Data.Caching
+{
+    public static class Constants
+    {
+        /// <summary>
+        /// Contains constants the define actions
+        /// </summary>
+        public static class Actions
+        {
+            public const string Get= "g";
+            public const string AddOrUpdate = "u";
+            public const string Delete = "d";
+            public const string Dequeue = "dq";
+        }
+        /// <summary>
+        /// Containts constants for operation response codes
+        /// </summary>
+        public static class ResponseCodes
+        {
+            public const string Okay = "ok";
+            public const string Error = "err";
+            public const string NotFound = "nf";
+        }
+
+        public const HeaderCommand ObjectId = (HeaderCommand)0xAA;
+        public const HeaderCommand NewObjectId = (HeaderCommand)0xAB;
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/Exceptions/InvalidStatusException.cs b/lib/VNLib.Data.Caching/src/Exceptions/InvalidStatusException.cs
new file mode 100644
index 0000000..2296774
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/Exceptions/InvalidStatusException.cs
@@ -0,0 +1,63 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: InvalidStatusException.cs 
+*
+* InvalidStatusException.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+
+using VNLib.Net.Messaging.FBM;
+
+namespace VNLib.Data.Caching.Exceptions
+{
+    /// <summary>
+    /// Raised when the response status code of an FBM Request message is not valid for 
+    /// the specified request
+    /// </summary>
+    public class InvalidStatusException : InvalidResponseException
+    {
+        private readonly string? StatusCode;
+        /// <summary>
+        /// Initalizes a new <see cref="InvalidStatusException"/> with the specfied status code
+        /// </summary>
+        /// <param name="message"></param>
+        /// <param name="statusCode"></param>
+        public InvalidStatusException(string message, string statusCode):this(message)
+        {
+            this.StatusCode = statusCode;
+        }
+
+        ///<inheritdoc/>
+        public InvalidStatusException()
+        {
+        }
+        ///<inheritdoc/>
+        public InvalidStatusException(string message) : base(message)
+        {
+        }
+        ///<inheritdoc/>
+        public InvalidStatusException(string message, Exception innerException) : base(message, innerException)
+        {
+        }
+        ///<inheritdoc/>
+        public override string Message => $"InvalidStatusException: Status Code {StatusCode} \r\n {base.Message}";
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/Exceptions/MessageTooLargeException.cs b/lib/VNLib.Data.Caching/src/Exceptions/MessageTooLargeException.cs
new file mode 100644
index 0000000..c306ba5
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/Exceptions/MessageTooLargeException.cs
@@ -0,0 +1,50 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: MessageTooLargeException.cs 
+*
+* MessageTooLargeException.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.Runtime.Serialization;
+
+using VNLib.Net.Messaging.FBM;
+
+namespace VNLib.Data.Caching.Exceptions
+{
+    /// <summary>
+    /// Raised when a request (or server response) calculates the size of the message to be too large to proccess
+    /// </summary>
+    public class MessageTooLargeException : FBMException
+    {
+        ///<inheritdoc/>
+        public MessageTooLargeException()
+        {}
+        ///<inheritdoc/>
+        public MessageTooLargeException(string message) : base(message)
+        {}
+        ///<inheritdoc/>
+        public MessageTooLargeException(string message, Exception innerException) : base(message, innerException)
+        {}
+        ///<inheritdoc/>
+        protected MessageTooLargeException(SerializationInfo info, StreamingContext context) : base(info, context)
+        {}
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/Exceptions/ObjectNotFoundException.cs b/lib/VNLib.Data.Caching/src/Exceptions/ObjectNotFoundException.cs
new file mode 100644
index 0000000..e996ad6
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/Exceptions/ObjectNotFoundException.cs
@@ -0,0 +1,47 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: ObjectNotFoundException.cs 
+*
+* ObjectNotFoundException.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+
+namespace VNLib.Data.Caching.Exceptions
+{
+    /// <summary>
+    /// Raised when a command was executed on a desired object in the remote cache
+    /// but the object was not found
+    /// </summary>
+    public class ObjectNotFoundException : InvalidStatusException
+    {
+        internal ObjectNotFoundException()
+        {}
+
+        internal ObjectNotFoundException(string message) : base(message)
+        {}
+
+        internal ObjectNotFoundException(string message, string statusCode) : base(message, statusCode)
+        {}
+
+        internal ObjectNotFoundException(string message, Exception innerException) : base(message, innerException)
+        {}
+    }
+}
diff --git a/lib/VNLib.Data.Caching/src/IGlobalCacheProvider.cs b/lib/VNLib.Data.Caching/src/IGlobalCacheProvider.cs
new file mode 100644
index 0000000..eeee9e2
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/IGlobalCacheProvider.cs
@@ -0,0 +1,68 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: IGlobalCacheProvider.cs 
+*
+* IGlobalCacheProvider.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// A global cache provider interface
+    /// </summary>
+    public interface IGlobalCacheProvider
+    {
+        /// <summary>
+        /// Gets a value that indicates if the cache provider is currently available
+        /// </summary>
+        bool IsConnected { get; }
+
+        /// <summary>
+        /// Asynchronously gets a value from the backing cache store
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="key">The key identifying the object to recover from cache</param>
+        /// <param name="cancellation">A token to cancel the async operation</param>
+        /// <returns>The value if found, or null if it does not exist in the store</returns>
+        Task<T?> GetAsync<T>(string key, CancellationToken cancellation);
+
+        /// <summary>
+        /// Asynchronously sets (or updates) a cached value in the backing cache store
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="key">The key identifying the object to recover from cache</param>
+        /// <param name="newKey">An optional key that will be changed for the new object</param>
+        /// <param name="cancellation">A token to cancel the async operation</param>
+        /// <param name="value">The value to set at the given key</param>
+        /// <returns>A task that completes when the update operation has compelted</returns>
+        Task AddOrUpdateAsync<T>(string key, string? newKey, T value, CancellationToken cancellation);
+
+        /// <summary>
+        /// Asynchronously deletes an item from cache by its key
+        /// </summary>
+        /// <param name="key">The key identifying the item to delete</param>
+        /// <param name="cancellation">A token to cancel the async operation</param>
+        /// <returns>A task that completes when the delete operation has compelted</returns>
+        Task DeleteAsync(string key, CancellationToken cancellation);
+    }
+}
\ No newline at end of file
diff --git a/lib/VNLib.Data.Caching/src/VNLib.Data.Caching.csproj b/lib/VNLib.Data.Caching/src/VNLib.Data.Caching.csproj
new file mode 100644
index 0000000..eeaaa11
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/VNLib.Data.Caching.csproj
@@ -0,0 +1,46 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Authors>Vaughn Nugent</Authors>
+    <Copyright>Copyright © 2023 Vaughn Nugent</Copyright>
+    <Version>1.0.1.1</Version>
+    <GenerateDocumentationFile>True</GenerateDocumentationFile>
+    <Nullable>enable</Nullable>
+    <DocumentationFile></DocumentationFile>
+    <PackageProjectUrl>https://www.vaughnnugent.com/resources/software</PackageProjectUrl>
+    <SignAssembly>True</SignAssembly>
+    <AssemblyOriginatorKeyFile>\\vaughnnugent.com\Internal\Folder Redirection\vman\Documents\Programming\Software\StrongNameingKey.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <AnalysisLevel>latest-all</AnalysisLevel>
+    <Title>$(AssemblyName)</Title>
+    <Description>Provides constants and extensions for a key-value data caching protocol layer atop the Fixed Buffer Messaging protocol to work VNCache servers. Provides rapid cache development</Description>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="..\README.md">
+      <Pack>True</Pack>
+      <PackagePath>\</PackagePath>
+    </None>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="ErrorProne.NET.CoreAnalyzers" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="ErrorProne.NET.Structs" Version="0.1.2">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\..\core\lib\Net.Messaging.FBM\src\VNLib.Net.Messaging.FBM.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/lib/VNLib.Data.Caching/src/WaitForChangeResult.cs b/lib/VNLib.Data.Caching/src/WaitForChangeResult.cs
new file mode 100644
index 0000000..76cc002
--- /dev/null
+++ b/lib/VNLib.Data.Caching/src/WaitForChangeResult.cs
@@ -0,0 +1,45 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Data.Caching
+* File: WaitForChangeResult.cs 
+*
+* WaitForChangeResult.cs is part of VNLib.Data.Caching which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Data.Caching is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Data.Caching is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+namespace VNLib.Data.Caching
+{
+    /// <summary>
+    /// The result of a cache server change event
+    /// </summary>
+    public readonly struct WaitForChangeResult
+    {
+        /// <summary>
+        /// The operation status code
+        /// </summary>
+        public readonly string Status { get; init; }
+        /// <summary>
+        /// The current (or old) id of the element that changed
+        /// </summary>
+        public readonly string CurrentId { get; init; }
+        /// <summary>
+        /// The new id of the element that changed
+        /// </summary>
+        public readonly string NewId { get; init; }
+    }
+}
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/LICENSE.txt b/lib/VNLib.Plugins.Extensions.VNCache/LICENSE.txt
new file mode 100644
index 0000000..147bcd6
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/LICENSE.txt
@@ -0,0 +1,195 @@
+Copyright (c) 2022 Vaughn Nugent
+
+Contact information
+    Name: Vaughn Nugent
+    Email: public[at]vaughnnugent[dot]com
+	Website: https://www.vaughnnugent.com
+
+The software in this repository is licensed under the GNU Affero GPL version 3.0 (or any later version). 
+
+GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+Preamble
+
+The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, our General Public Licenses are intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License which gives you legal permission to copy, distribute and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that improvements made in alternate versions of the program, if they receive widespread use, become available for other developers to incorporate. Many developers of free software are heartened and encouraged by the resulting cooperation. However, in the case of software used on network servers, this result may fail to come about. The GNU General Public License permits making a modified version and letting the public access it on a server without ever releasing its source code to the public.
+
+The GNU Affero General Public License is designed specifically to ensure that, in such cases, the modified source code becomes available to the community. It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version.
+
+An older license, called the Affero General Public License and published by Affero, was designed to accomplish similar goals. This is a different license, not a version of the Affero GPL, but Affero has released a new version of the Affero GPL which permits relicensing under this license.
+
+The precise terms and conditions for copying, distribution and modification follow.
+TERMS AND CONDITIONS
+0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public License.
+
+"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based on the Program.
+
+To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays "Appropriate Legal Notices" to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
+1. Source Code.
+
+The "source code" for a work means the preferred form of the work for making modifications to it. "Object code" means any non-source form of a work.
+
+A "Standard Interface" means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A "Major Component", in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
+2. Basic Permissions.
+
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
+
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
+4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
+5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+    b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to "keep intact all notices".
+    c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
+    d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
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+6. Conveying Non-Source Forms.
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+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
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+
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+
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+7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+    b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+    c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
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+
+All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+8. Termination.
+
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
+
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+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer all users interacting with it remotely through a computer network (if your version supports such interaction) an opportunity to receive the Corresponding Source of your version by providing access to the Corresponding Source from a network server at no charge, through some standard or customary means of facilitating copying of software. This Corresponding Source shall include the Corresponding Source for any work covered by version 3 of the GNU General Public License that is incorporated pursuant to the following paragraph.
+
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the work with which it is combined will remain governed by version 3 of the GNU General Public License.
+14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions of the GNU Affero General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU Affero General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU Affero General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU Affero General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
\ No newline at end of file
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/README.md b/lib/VNLib.Plugins.Extensions.VNCache/README.md
new file mode 100644
index 0000000..9799fec
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/README.md
@@ -0,0 +1,8 @@
+# VNLib.Plugins.Extensions.VNCache
+*An extension library for configuring and managing a IGlobalCache connection against a VNCache cluster on a plugin*
+
+#### Builds
+Debug build w/ symbols & xml docs, release builds, NuGet packages, and individually packaged source code are available on my [website](https://www.vaughnnugent.com/resources/software). All tar-gzip (.tgz) files will have an associated .sha384 appended checksum of the desired download file.
+
+## License
+Source files in for this project are licensed to you under the GNU Affero General Public License (or any later version). See the LICENSE files for more information.
\ No newline at end of file
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/build.readme.md b/lib/VNLib.Plugins.Extensions.VNCache/build.readme.md
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/build.readme.md
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/src/VNCacheExtensions.cs b/lib/VNLib.Plugins.Extensions.VNCache/src/VNCacheExtensions.cs
new file mode 100644
index 0000000..5f58142
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/src/VNCacheExtensions.cs
@@ -0,0 +1,108 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Plugins.Extensions.VNCache
+* File: VNCacheExtensions.cs 
+*
+* VNCacheExtensions.cs is part of VNLib.Plugins.Extensions.VNCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Plugins.Extensions.VNCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Plugins.Extensions.VNCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Text.Json;
+
+using VNLib.Utils.Logging;
+using VNLib.Data.Caching;
+using VNLib.Data.Caching.Extensions;
+using VNLib.Plugins.Extensions.Loading;
+
+namespace VNLib.Plugins.Extensions.VNCache
+{
+    /// <summary>
+    /// Contains extension methods for aquiring a Plugin managed 
+    /// global cache provider.
+    /// </summary>
+    public static class VNCacheExtensions
+    {
+        /// <summary>
+        /// Loads the shared cache provider for the current plugin
+        /// </summary>
+        /// <param name="pbase"></param>
+        /// <param name="localized">A localized log provider to write cache logging information to</param>
+        /// <returns>The shared <see cref="IGlobalCacheProvider"/> </returns>
+        /// <remarks>
+        /// The returned instance, background work, logging, and its lifetime 
+        /// are managed by the current plugin. Beware when calling this method
+        /// network connections may be spawend and managed in the background by 
+        /// this library.
+        /// </remarks>
+        public static VnCacheClient GetGlobalCache(this PluginBase pbase, ILogProvider? localized = null) 
+            => LoadingExtensions.GetOrCreateSingleton<VnCacheClient>(pbase, localized == null ? LoadCacheClient : (pbase) => LoadCacheClient(pbase, localized));
+
+        private static VnCacheClient LoadCacheClient(PluginBase pbase) => LoadCacheClient(pbase, pbase.Log);
+
+        private static VnCacheClient LoadCacheClient(PluginBase pbase, ILogProvider localized)
+        {
+            //Get config for client
+            IReadOnlyDictionary<string, JsonElement> config = pbase.GetConfigForType<VnCacheClient>();
+
+            //Init client
+            ILogProvider? debugLog = pbase.IsDebug() ? pbase.Log : null;
+            VnCacheClient client = new(debugLog);
+
+            //Begin cache connections by scheduling a task on the plugin's scheduler
+            _ = pbase.DeferTask(() => RunClientAsync(pbase, config, localized, client), 250);
+
+            return client;
+        }
+
+        private static async Task RunClientAsync(PluginBase pbase, IReadOnlyDictionary<string, JsonElement> config, ILogProvider localized, VnCacheClient client)
+        {
+            ILogProvider Log = localized;
+
+            try
+            {
+                //Try loading config
+                await client.LoadConfigAsync(pbase, config);
+
+                Log.Verbose("VNCache client configration loaded successfully");
+
+                //Run and wait for exit
+                await client.RunAsync(Log, pbase.UnloadToken);
+            }
+            catch (OperationCanceledException)
+            { }
+            catch (KeyNotFoundException e)
+            {
+                Log.Error("Missing required configuration variable for VnCache client: {0}", e.Message);
+            }
+            catch (FBMServerNegiationException fne)
+            {
+                Log.Error("Failed to negotiate connection with cache server {reason}", fne.Message);
+            }
+            catch (Exception ex)
+            {
+                Log.Error(ex, "Unhandled exception occured in background cache client listening task");
+            }
+            finally
+            {
+                client.Dispose();
+            }
+
+            Log.Information("Cache client exited");
+        }     
+    }
+}
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/src/VNLib.Plugins.Extensions.VNCache.csproj b/lib/VNLib.Plugins.Extensions.VNCache/src/VNLib.Plugins.Extensions.VNCache.csproj
new file mode 100644
index 0000000..a664006
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/src/VNLib.Plugins.Extensions.VNCache.csproj
@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <GenerateDocumentationFile>True</GenerateDocumentationFile>
+    <Version>1.0.1.1</Version>
+    <Authors>Vaughn Nugent</Authors>
+    <Copyright>Copyright © 2023 Vaughn Nugent</Copyright>
+    <PackageProjectUrl>https://www.vaughnnugent.com/resources</PackageProjectUrl>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
+    <SignAssembly>True</SignAssembly>
+    <AssemblyOriginatorKeyFile>\\vaughnnugent.com\Internal\Folder Redirection\vman\Documents\Programming\Software\StrongNameingKey.snk</AssemblyOriginatorKeyFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\Extensions\lib\VNLib.Plugins.Extensions.Loading\src\VNLib.Plugins.Extensions.Loading.csproj" />
+    <ProjectReference Include="..\..\VNLib.Data.Caching.Extensions\src\VNLib.Data.Caching.Extensions.csproj" />
+    <ProjectReference Include="..\..\VNLib.Data.Caching\src\VNLib.Data.Caching.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/lib/VNLib.Plugins.Extensions.VNCache/src/VnCacheClient.cs b/lib/VNLib.Plugins.Extensions.VNCache/src/VnCacheClient.cs
new file mode 100644
index 0000000..a34e611
--- /dev/null
+++ b/lib/VNLib.Plugins.Extensions.VNCache/src/VnCacheClient.cs
@@ -0,0 +1,231 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Plugins.Extensions.VNCache
+* File: VnCacheClient.cs 
+*
+* VnCacheClient.cs is part of VNLib.Plugins.Extensions.VNCache which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Plugins.Extensions.VNCache is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Plugins.Extensions.VNCache is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System.Text.Json;
+using System.Net.Sockets;
+using System.Net.WebSockets;
+using System.Security.Cryptography;
+
+using VNLib.Utils;
+using VNLib.Utils.Memory;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Extensions;
+using VNLib.Hashing.IdentityUtility;
+using VNLib.Data.Caching;
+using VNLib.Data.Caching.Extensions;
+using VNLib.Net.Messaging.FBM.Client;
+using VNLib.Plugins.Extensions.Loading;
+
+
+namespace VNLib.Plugins.Extensions.VNCache
+{
+    /// <summary>
+    /// A wrapper to simplify a shared global cache client
+    /// </summary>
+    [ConfigurationName("vncache")]
+    public sealed class VnCacheClient : VnDisposeable, IGlobalCacheProvider
+    {
+        FBMClient? _client;
+
+        private TimeSpan RetryInterval;
+
+        private readonly ILogProvider? DebugLog;
+        private readonly IUnmangedHeap? ClientHeap;
+
+        /// <summary>
+        /// Initializes an emtpy client wrapper that still requires 
+        /// configuration loading
+        /// </summary>
+        /// <param name="debugLog">An optional debugging log</param>
+        /// <param name="heap">An optional <see cref="IUnmangedHeap"/> for <see cref="FBMClient"/> buffers</param>
+        internal VnCacheClient(ILogProvider? debugLog, IUnmangedHeap? heap = null)
+        {
+            DebugLog = debugLog;
+            //Default to 10 seconds
+            RetryInterval = TimeSpan.FromSeconds(10);
+
+            ClientHeap = heap;
+        }
+
+        ///<inheritdoc/>
+        protected override void Free()
+        {
+            _client?.Dispose();
+            _client = null;
+        }
+
+
+        /// <summary>
+        /// Loads required configuration variables from the config store and 
+        /// intializes the interal client
+        /// </summary>
+        /// <param name="pbase"></param>
+        /// <param name="config">A dictionary of configuration varables</param>
+        /// <exception cref="KeyNotFoundException"></exception>
+        internal async Task LoadConfigAsync(PluginBase pbase, IReadOnlyDictionary<string, JsonElement> config)
+        {
+            int maxMessageSize = config["max_message_size"].GetInt32();
+            string? brokerAddress = config["broker_address"].GetString() ?? throw new KeyNotFoundException("Missing required configuration variable broker_address");
+
+            //Get keys async
+            Task<ReadOnlyJsonWebKey?> clientPrivTask = pbase.TryGetSecretAsync("client_private_key").ToJsonWebKey();
+            Task<ReadOnlyJsonWebKey?> brokerPubTask = pbase.TryGetSecretAsync("broker_public_key").ToJsonWebKey();
+            Task<ReadOnlyJsonWebKey?> cachePubTask = pbase.TryGetSecretAsync("cache_public_key").ToJsonWebKey();
+
+            //Wait for all tasks to complete
+            _ = await Task.WhenAll(clientPrivTask, brokerPubTask, cachePubTask);
+
+            ReadOnlyJsonWebKey clientPriv = await clientPrivTask ?? throw new KeyNotFoundException("Missing required secret client_private_key");
+            ReadOnlyJsonWebKey brokerPub = await brokerPubTask ?? throw new KeyNotFoundException("Missing required secret broker_public_key");
+            ReadOnlyJsonWebKey cachePub = await cachePubTask ?? throw new KeyNotFoundException("Missing required secret cache_public_key");
+
+            RetryInterval = config["retry_interval_sec"].GetTimeSpan(TimeParseType.Seconds);
+
+            Uri brokerUri = new(brokerAddress);
+
+            //Init the client with default settings
+            FBMClientConfig conf = FBMDataCacheExtensions.GetDefaultConfig(ClientHeap ?? Memory.Shared, maxMessageSize, DebugLog);
+
+            _client = new(conf);
+
+            //Add the configuration to the client
+            _client.GetCacheConfiguration()
+                .WithBroker(brokerUri)
+                .WithVerificationKey(cachePub)
+                .WithSigningCertificate(clientPriv)
+                .WithBrokerVerificationKey(brokerPub)
+                .WithTls(brokerUri.Scheme == Uri.UriSchemeHttps);
+        }
+
+        /// <summary>
+        /// Discovers nodes in the configured cluster and connects to a random node
+        /// </summary>
+        /// <param name="Log">A <see cref="ILogProvider"/> to write log events to</param>
+        /// <param name="cancellationToken">A token to cancel the operation</param>
+        /// <returns>A task that completes when the operation has been cancelled or an unrecoverable error occured</returns>
+        /// <exception cref="InvalidOperationException"></exception>
+        /// <exception cref="OperationCanceledException"></exception>
+        internal async Task RunAsync(ILogProvider Log, CancellationToken cancellationToken)
+        {
+            _ = _client ?? throw new InvalidOperationException("Client configuration not loaded, cannot connect to cache servers");
+
+            while (true)
+            {
+                //Load the server list
+                ActiveServer[]? servers;
+                while (true)
+                {
+                    try
+                    {
+                        Log.Debug("Discovering cluster nodes in broker");
+                        //Get server list
+                        servers = await _client.DiscoverCacheNodesAsync(cancellationToken);
+                        break;
+                    }
+                    catch (HttpRequestException re) when (re.InnerException is SocketException)
+                    {
+                        Log.Warn("Broker server is unreachable");
+                    }
+                    catch (Exception ex)
+                    {
+                        Log.Warn("Failed to get server list from broker, reason {r}", ex.Message);
+                    }
+
+                    //Gen random ms delay
+                    int randomMsDelay = RandomNumberGenerator.GetInt32(1000, 2000);
+                    await Task.Delay(randomMsDelay, cancellationToken);
+                }
+
+                if (servers?.Length == 0)
+                {
+                    Log.Warn("No cluster nodes found, retrying");
+                    await Task.Delay(RetryInterval, cancellationToken);
+                    continue;
+                }
+
+                try
+                {
+                    Log.Debug("Connecting to random cache server");
+
+                    //Connect to a random server
+                    ActiveServer selected = await _client.ConnectToRandomCacheAsync(cancellationToken);
+                    Log.Debug("Connected to cache server {s}", selected.ServerId);
+
+                    //Set connection status flag
+                    IsConnected = true;
+
+                    //Wait for disconnect
+                    await _client.WaitForExitAsync(cancellationToken);
+
+                    Log.Debug("Cache server disconnected");
+                }
+                catch (WebSocketException wse)
+                {
+                    Log.Warn("Failed to connect to cache server {reason}", wse.Message);
+                    continue;
+                }
+                catch (HttpRequestException he) when (he.InnerException is SocketException)
+                {
+                    Log.Debug("Failed to connect to random cache server server");
+                    //Continue next loop
+                    continue;
+                }
+                finally
+                {
+                    IsConnected = false;
+                }
+            }
+        }
+
+
+        ///<inheritdoc/>
+        public bool IsConnected { get; private set; }
+        
+
+        ///<inheritdoc/>
+        public Task AddOrUpdateAsync<T>(string key, string? newKey, T value, CancellationToken cancellation)
+        {
+            return !IsConnected
+               ? throw new InvalidOperationException("The underlying client is not connected to a cache node")
+               : _client!.AddOrUpdateObjectAsync(key, newKey, value, cancellation);
+        }
+
+        ///<inheritdoc/>
+        public Task DeleteAsync(string key, CancellationToken cancellation)
+        {
+            return !IsConnected
+              ? throw new InvalidOperationException("The underlying client is not connected to a cache node")
+              : _client!.DeleteObjectAsync(key, cancellation);
+        }
+       
+     
+        ///<inheritdoc/>
+        public Task<T?> GetAsync<T>(string key, CancellationToken cancellation)
+        {
+            return !IsConnected
+               ? throw new InvalidOperationException("The underlying client is not connected to a cache node")
+               : _client!.GetObjectAsync<T>(key, cancellation);
+        }
+    }
+}
\ No newline at end of file