Redis 4.0.7 发布,高性能 key-value 数据库

王练
 王练
发布于 2018年01月25日
收藏 8

Redis 是一个高性能的 key-value 数据库。Redis 的出现,很大程度补偿了 memcached 这类 keyvalue 存储的不足,在部分场合可以对关系数据库起到很好的补充作用。它提供了 Python,Ruby,Erlang,PHP 客户端,使用很方便。

Redis 4.0.7 解决了许多 bug ,并增加了一些非常有用的功能,包括:

  • Many 32 bit overflows were addressed in order to allow to use Redis with a very significant amount of data, memory size permitting. 

  • MEMORY USAGE fixed for the list type.

  • Allow read-only scripts in Redis Cluster. 

  • Fix AOF pipes setup in edge case. 

  • AUTH option for MIGRATE. 

  • HyperLogLogs are no longer converted from sparse to dense in order to be merged.

  • Fix AOF rewrite dead loop under edge cases.

  • Fix processing of large bulk strings (>= 2GB). 

  • Added RM_UnlinkKey in modules API. 

  • Fix Redis Cluster crashes when certain commands with a variable number of arguments are called in an improper way.

  • Fix memory leak in lazyfree engine.

  • Fix many potentially successful partial synchronizations that end doing a full SYNC, because of a bug destroying the replication backlog on the slave. So after a failover the slave was often not able to PSYNC with masters, and a full SYNC was triggered. The bug only happened after 1 hour of uptime so escaped the unit tests.

  • Improve anti-affinity in master/slave allocation for Redis Cluster when the cluster is created. 

  • Improve output buffer handling for slaves, by not limiting the amount of writes a slave could receive. 

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