public void Add(string key, object value, TimeSpan timeout)
{
CacheItemRemovedCallback callback = null;
// only need call back if item is in the locking states
if (CacheEntries.ContainsKey(key))
{
callback = ItemRemovedCallback;
}
Insert(key, value, null, timeout, CacheItemPriority.Normal, callback);
}
/*
* private void Insert(string key, object obj, CacheDependency dep, DateTimeOffset timeframeOffset, CacheItemPriority priority, CacheItemRemovedCallback callback)
* {
* if (obj != null)
* {
* var cache = GetCache();
* cache.Insert(key, obj, dep, timeframeOffset.UtcDateTime, Cache.NoSlidingExpiration, priority, callback);
* }
* }
*/
/// <summary>
/// Items the removed callback.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <param name="reason">The reason.</param>
internal static void ItemRemovedCallback(string key, object value, CacheItemRemovedReason reason)
{
if (reason == CacheItemRemovedReason.Expired)
{
var cacheEntry = CacheEntries.Get(key);
if (cacheEntry != null)
{
lock (cacheEntry.Lock)
{
CacheEntries.Remove(key);
}
}
}
}
public object GetAndLock(string key, TimeSpan timespan, out object lockHandle)
{
lockHandle = CacheEntries.GetLock(key);
return(Get(key));
}