Bullet Cache / MultiDomain Cache Daemon

A next-generation memory cache daemon with idea similar to memcached, but which pervasively uses multithreading and provides advanced modes of data query and expiry. With its innovative system of record tags, it allows bulk expiry (or retrieval) of records by user-defined criteria such as "all records belogning to a certain page" or "all records belonging to a certain user". For more information, see the comprehensive User Guide.