Using Google cache may lead to lock up on RS side.

On the server side we are using google cache with life time bounds. This is integrated with GlobalMemoryManager which is used for almost all tasks that requires memory allocation. The problem is that when the cache member get removed, it doesn't send remove notification until next write/get operation happen. But in some cases once the large cache was removed (but memory manager doesn't know that since it relies on the notification), we try to resend it and memory manager get stuck waiting for free space, blocking all other operations with the memory manager.