1 files changed, 107 insertions, 0 deletions
diff --git a/plugins/ObjectCacheServer/src/CacheConstants.cs b/plugins/ObjectCacheServer/src/CacheConstants.cs
new file mode 100644
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+++ b/plugins/ObjectCacheServer/src/CacheConstants.cs
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+/*
+* Copyright (c) 2024 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: ObjectCacheServer
+* File: CacheConstants.cs 
+*
+* CacheConstants.cs is part of ObjectCacheServer which is 
+* part of the larger VNLib collection of libraries and utilities.
+*
+* ObjectCacheServer 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.
+*
+* ObjectCacheServer 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.ObjectCache.Server
+{
+    internal static class CacheConstants
+    {
+        /// <summary>
+        /// The default path for the VNCache well known endpoint (aka discovery endpoint)
+        /// </summary>
+        public const string DefaultWellKnownPath = "/.well-known/vncache";
+
+        /// <summary>
+        /// The maximum size of buffers for FBM messages sent between servers.
+        /// </summary>
+        public const int MaxSyncMessageSize = 12 * 1024;
+
+        /// <summary>
+        /// The maximum size of the change queue for the cache listener
+        /// </summary>
+        public const int CacheListenerChangeQueueSize = 10000;
+
+        /// <summary>
+        /// The time a client authorization token is valid for
+        /// </summary>
+        public static readonly TimeSpan ClientAuthTokenExpiration = TimeSpan.FromSeconds(30);
+
+        public static class LogScopes
+        {
+            /// <summary>
+            /// The log scope for the cache listener
+            /// </summary>
+            public const string BlobCacheListener = "CacheListener";
+
+            /// <summary>
+            /// The peer discovery log scope
+            /// </summary>
+            public const string PeerDiscovery = "DISC";
+
+            /// <summary>
+            /// The log scope for the replication FBM client debug log (if debugging is enabled)
+            /// </summary>
+            public const string ReplicationFbmDebug = "REPL-CLNT";
+
+            /// <summary>
+            /// The log scope for cache replication events
+            /// </summary>
+            public const string RepliactionManager = "REPL-MGR";
+
+            /// <summary>
+            /// The log scope for the cache listener change event queue
+            /// </summary>
+            public const string CacheListenerPubQueue = "QUEUE";
+
+            /// <summary>
+            /// The log scope for the cache connection websocket endpoint
+            /// </summary>
+            public const string ConnectionEndpoint = "CONEP";
+        }
+
+        public static class Delays
+        {
+            /// <summary>
+            /// The amount of startup delay before starting an initial peer discovery
+            /// </summary>
+            public static readonly TimeSpan InitialDiscovery = TimeSpan.FromSeconds(15);
+
+            /// <summary>
+            /// The amount of time to wait before retrying a failed resolve 
+            /// of a well-known peers
+            /// </summary>
+            public static readonly TimeSpan WellKnownResolveFailed = TimeSpan.FromSeconds(20);
+
+            /// <summary>
+            /// The amount of time to wait when getting the value of a changed item from the cache
+            /// </summary>
+            /// <remarks>
+            /// When an item change was detected from another peer, the cache will wait this 
+            /// amount of time to get the new value from the cache before timing out.
+            /// </remarks>
+            public static readonly TimeSpan CacheSyncGetItemTimeout = TimeSpan.FromSeconds(10);
+        }
+    }
+}