aredis

AREDIS (Asynchronous REDIS java client) is a java client for the Redis Cache server (http://redis.io) designed for performance and efficiency.

It has only one connection to each server and uses pipelining for performance rather than connection pooling.

It uses the Java 7 NIO based Asynchronous channel API for socket communication to the Redis server.

Important features are Data Handler API for storing Objects, OPTI_JAVA_HANDLER for efficient storage of Java Objects, built-in gzip compression, subscribe API for messaging, support for Lua scripts, key hash based sharding, Future results for use in regular synchronous applications, connection pool for Redis transactions using WATCH and auto closing of idle connections.