public class Backend<T> where T : CacheCostCalculable
Represents a storage which stores a certain type of value in memory. It provides fast access,
but limited storing size. The stored value type needs to conform to
cacheCost will be used to determine the cost of size for the cache item.
You can config a
MemoryStorage.Backend in its initializer by passing a
or modifying the
config property after it being created. The backend of
upper limitation on cost size in memory and item count. All items in the storage has an expiration
date. When retrieved, if the target item is already expired, it will be recognized as it does not
exist in the storage. The
MemoryStorage also contains a scheduled self clean task, to evict expired
items from memory.