A volatile concurrent engine backed by std::allocator. Data written using this engine is stored entierly in DRAM and lost after the database is closed.
This engine is variant of vcmap, which uses std::allocator to allocate memory. That means it is built on top of tbb::concurrent_hash_map data structure; std::basic_string is used as a type of a key and a value. TBB package is required.
This engine do not require any config parameters