OHC - Java large off heap cache

Off-Heap concurrent hash map intended to store GBs of serialized data. It has optional per entry or default TTL/expireAt, Entry eviction and expiration without a separate thread, Capable of maintaining huge amounts of cache memory, Suitable for tiny/small entries with low overhead using the chunked implementation.

OHC provides two implementations for different cache entry characteristics: - The _linked_ implementation allocates off-heap memory for each entry individually and works best for medium and big entries. - The _chunked_ implementation allocates off-heap memory for each hash segment as a whole and is intended for small entries.