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/*
* Copyright (c) 2023 Vaughn Nugent
*
* Library: VNLib
* Package: VNLib.Plugins.Extensions.VNCache
* File: ICacheExpirationStrategy.cs
*
* ICacheExpirationStrategy.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;
namespace VNLib.Plugins.Extensions.VNCache.DataModel
{
/// <summary>
/// An interface that provides an object caching expiration
/// instructions
/// </summary>
public interface ICacheExpirationStrategy
{
/// <summary>
/// The maxium age of a given entity
/// </summary>
TimeSpan CacheMaxAge { get; }
/// <summary>
/// Invoked when a record is retrieved and determined to be expired
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expired"></param>
void OnExpired<T>(T expired) where T : IExpirableCacheEntity;
}
}
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