Ardb
A redis protocol compatible nosql, it support multiple storage engines
...(String), 2D Spatial Index(Sorted Set), Stream. Replication compatible with Redis 2.6/2.8. Ardb instance work as slave of Redis 2.6/2.8+ instance. Arab instance work as master of Redis 2.6/2.8+ instance. Ardb instance work as slave of Ardb instance. Auto failover support by redis-sentinel. Lua Scripting support. Pub/Sub. All redis pubsub commands are supported. Transactions. All redis transaction commands are supported. Backup data online. Use 'save/bgsave' to backup data.