Provides a ConcurrentMap implementation. This implementation is based on CopyOnUpdate for each
modifying operation. However the internal map is not volatile, meaning a modification may not be
visible to a following read, hence this map should be used when in such cases the upper layer
would insert the same value under this key that the was originally inserted, such as one time
cache initialization which always ends up with the same result.
Nested Class Summary
Nested classes/interfaces inherited from interface java.util.Map