private void removedCallback(string key, Object value, CacheItemRemovedReason reason)
{
BubblingRoll obj = (BubblingRoll)value;
obj.Save(); // if the application is shutdown before save, the change is lost. (ie. local test server)
if (reason == CacheItemRemovedReason.Expired)
{
insertNew(key, obj.Id, obj.ListSize);
}
}
private BubblingRoll insertNew(string key, string id, int list_size)
{
BubblingRoll obj = new BubblingRoll(id, list_size); // if concurrency happens, this will be done more than once.
// todo: don't insert into cache for nonexistent board id (bad user request).
HttpRuntime.Cache.Insert(key, obj, null, DateTime.Now.AddSeconds(HeartsConfiguration.DEFAULT_CACHE_SECONDS),
Cache.NoSlidingExpiration, CacheItemPriority.Default, removedCallback);
// expires after some time for multi-node synchronization (unreliable).
return(obj);
}
private BubblingRoll get(string id, int list_size)
{
string key = SandId.CombineId(BubblingRoll.PAR_KEY_PREFIX, id);
BubblingRoll obj = (BubblingRoll)HttpRuntime.Cache.Get(key);
if (obj == null)
{
obj = insertNew(key, id, list_size);
}
return(obj);
}