memcachedb
What is Memcachedb?
Memcachedb is a distributed storage system designed for persistent. We simplely hacked from memcached and tugela. But neither of them. Memcachedb is not a cache solution, it is a persistent solution for high-frequency writing and reading. It conforms to memcache protocol(not completed, see below), so any memcached client can have connectivity with it. Memcachedb uses Berkeley DB as a storing backend, so lots of features including transaction and replication are supported.
Memcachedb Features
- High network performance, thanks to memcached and libevent(we using epoll).
- High storage performance, Using Berkeley DB BTREE Access Method, and bdb's own MPOOL.
- High availability, Berkeley DB Transaction supported, and replication is ready.
Supported memcache command
- get, set, add, replace
- incr, decr
- delete
- stats
- flush_all
Private commands
- db_checkpoint, db_archive
- db_ismaster, db_whoismaster (for replication)
We Stand on the shoulders of giants, Memcachedb source code is based on:
- Memcached: http://www.danga.com/memcached/
- Tugela: http://meta.wikimedia.org/wiki/Tugela_Cache
posted on 2008-01-07 14:19 flyingchen 阅读(589) 评论(1) 编辑 收藏 举报