/*
* Copyright (c) 2024 Vaughn Nugent
*
* Library: VNLib
* Package: VNLib.Plugins.Extensions.VNCache
* File: WriteThroughCachePolicy.cs
*
* WriteThroughCachePolicy.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.Threading.Tasks;
namespace VNLib.Plugins.Extensions.VNCache.DataModel
{
///
/// Provides a very simple Write-Through cache policy that
/// will cause fetch functions to block until the cache is
/// consistent with the backing store
///
public class WriteThroughCachePolicy : ICacheTaskPolicy
{
///
/// The singleton instance of the write-through cache policy
///
public static readonly WriteThroughCachePolicy Instance = new();
///
public Task ObserveOperationAsync(Task operation) => operation; //Write through
}
}