OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
StackTrace:
   at System.Runtime.Caching.ExpiresBucket.FlushExpiredItems(DateTime utcNow, Boolean useInsertBlock)
   at System.Runtime.Caching.CacheExpires.FlushExpiredItems(Boolean checkDelta, Boolean useInsertBlock)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.TimerQueueTimer.CallCallback()
   at System.Threading.TimerQueueTimer.Fire()
   at System.Threading.TimerQueue.FireNextTimers()