/// <summary>
/// The given callback will be fired after the cache entry is evicted from the cache.
/// </summary>
/// <param name="options">The <see cref="MemoryCacheEntryOptions"/>.</param>
/// <param name="callback">The callback to register for calling after an entry is evicted.</param>
/// <returns>The <see cref="MemoryCacheEntryOptions"/> so that additional calls can be chained.</returns>
public static MemoryCacheEntryOptions RegisterPostEvictionCallback(
this MemoryCacheEntryOptions options,
PostEvictionDelegate callback)
{
ThrowHelper.ThrowIfNull(callback);
return(options.RegisterPostEvictionCallback(callback, state: null));
}
/// <summary>
/// The given callback will be fired after the cache entry is evicted from the cache.
/// </summary>
/// <param name="options"></param>
/// <param name="callback"></param>
/// <param name="state"></param>
public static MemoryCacheEntryOptions RegisterPostEvictionCallback(
this MemoryCacheEntryOptions options,
PostEvictionDelegate callback)
{
if (callback == null)
{
throw new ArgumentNullException(nameof(callback));
}
return(options.RegisterPostEvictionCallback(callback, state: null));
}
public void Set <T>(string key, T cachedValue, MemoryCacheEntryOptions options = null) where T : class
{
var entryOptions = new ms.MemoryCacheEntryOptions();
if (options != null)
{
entryOptions.SlidingExpiration = options.SlidingExpiration;
entryOptions.RegisterPostEvictionCallback((entryKey, value, reason, substate) => options.Callback?.Invoke(entryKey.ToString(), value, reason, substate));
}
_memoryCache.Set(key, cachedValue, entryOptions);
}