Puts a new keyed entry in cache
Puts a new keyed entry in cache
this
Returns the cached value mapped with this key or Empty if not found
Returns the cached value mapped with this key or Empty if not found
Box[V]
Removes the cache entry mapped with this key
Removes the cache entry mapped with this key
the value removed
A Map that holds the values as SoftReference-s. It also applies a LRU policy for the cache entries.