Redis Version

• 1 年一个大版本，每 6 个月一个小版本

version	date
Redis 7	2022-04-27
Redis 6	2020-04-30

Redis 7.2

• RDB 11
  • 不兼容旧版本
• 命令
  • WAITAOF
  • CLIENT SETINFO - 设置 Client 名字和版本
  • CLIENT NO-TOUCH - 不影响 LRU/LFU
• 优化小数据 KV - listpack
  • list, set
• redis-cli 可以在 subscribe 时继续执行命令

Redis 7

• Redis Functions
• ACLv2 - selector, key 读写限定, 限定子命令
• command introspection - 新增 COMMAND getkeysandflags|list|docs
• Cluster Sharded Pub/Sub
• 50 个新命令
  • ZMPOP, BZMPOP, LMPOP, BLMPOP, SINTERCARD, ZINTERCARD
  • shared pub/sub - SPUBLISH, SSUBSCRIBE, SUNSUBSCRIBE, PUBSUB SHARDCHANNELS/SHARDNUMSUB
  • EXPIRETIME, PEXPIRETIME
  • EXPIRE NX/XX/GT/LT
  • EVAL_RO, EVALSHA_RO
  • SORT_RO
  • SHUTDOWN NOW|FORCE|ABORT
  • FUNCTION, FCALL, FCALL_RO
  • 管理
    • COMMAND DOCS|LIST|INFO
    • LATENCY HISTOGRAM
    • CLUSTER LINKS|DELSLOTSRANGE|ADDSLOTSRANGE
    • CLIENT NO-EVICT
    • ACL DRYRUN

Redis 6

• SSL
• ACLs
• RESP3
• Client side caching
• Threaded I/O - 部分多线程
• Diskless replication on replicas
• Cluster support in Redis-benchmark
• improved redis-cli cluster support

Redis 5

• 新增 stream 类型

Redis 4

• 变更
  1. 模块
  2. 新的同步方式
  • A -> B -> C -> D
  3. 失效机制
  • LFU
  4. 非阻塞 DEL 和 FLUSHALL/FLUSHDB.
  5. RDB-AOF 混合持久模式
  6. 新的 MEMORY 语句
  7. Redis Cluster 现在兼容 NAT/Docker
• 参考
  • The first release candidate of Redis 4.0 is out
  • RELEASENOTES

Redis 3.2.0

• GEO API
• BITFIELD command
• script effects replication 集群下只同步被脚本修改的内容,而不是分发脚本到所有节点执行
• Lua scripts debugger VIDEO: New Redis Lua scripts debugger: a short intro
• slaves and masters are in agreement about what keys are expired during read operations.
• SPOP now accepts an optional count argument
• RDB AUX fields
• Sentinel can now scale monitoring many masters
• 参考
  • Redis 3.2.0 is out!