This member is added by an implicit conversion from MemoryCache[K, V] to
any2stringadd[MemoryCache[K, V]] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from MemoryCache[K, V] to
StringFormat[MemoryCache[K, V]] performed by method StringFormat in scala.Predef.
This trait makes a simple cache from a ConcurrentHashMap accompanied by a getOrElse function to obtain or create values
type of the keys
type of the values