Redis 5.0 rc1 已发布，Redis 5 是一个专注于几个重要特性的发行版。不同于 Redis 4 非常专注于操作Redis 5 的变化大多是面向用户的，在现有的基础上实施新的数据类型和操作类型。
以下是此版本的主要特性：
1. The new Stream data type. https://redis.io/topics/streams-intro 2. New Redis modules APIs: Timers and Cluster API. 3. RDB now store LFU and LRU information. 4. The cluster manager was ported from Ruby (redis-trib.rb) to C code inside redis-cli. Check `redis-cli --cluster help` for more info. 5. New sorted set commands: ZPOPMIN/MAX and blocking variants. 6. Active defragmentation version 2. 7. Improvemenets in HyperLogLog implementations. 8. Better memory reporting capabilities. 9. Many commands with sub-commands now have an HELP subcommand. 10. Better performances when clients connect and disconnect often. 11. Many bug fixes and other random improvements. 12. Jemalloc was upgraded to version 5.1
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