HyperLogLog 8. 位图（bitmap） 9. 地理坐标（GEO） 10. 流（Stream） 第⼆部分：附加功能 11. 数据库* 12. ⾃动过期* 13. 流⽔线与事务* 14. Lua 脚本 15. 持久化 16. 发布与订阅 17. 模块 第三部分：多机功能 18. 复制* 19. Sentinel 20. 集群 附录 附录 A ：Redis 安装⽅法* 附录 B ：redis-py Redis 为⽤户提供了字符串、散列、列表、集合、有序集合、HyperLogLog、位图、流、地理坐标等⼀系列 丰富的数据结构， 每种数据结构都适⽤于解决特定的问题。 在有需要的时候， ⽤户还可以通过事务、Lua 脚本、模块等特性， 扩展已有数据结构的功能， 甚⾄从零实现⾃⼰专属的数据结构。 通过这些数据结构和 特性， Redis 可以保证， ⽤户总是可以使⽤最适合的⼯具去解决⼿头上的问题。 完备的功能 在上述这些数据结构的基础上， 为⽤户提供的额外功能。 其中包括管理数据结构的数据库管理 功能和⾃动过期功能， 将数据结构持久化⾄硬盘从⽽避免数据丢失的持久化功能， 提⾼多条命令执⾏效率的流⽔ 线功能， 保证命令安全性的事务和 Lua 脚本功能， 还有扩展服务器特性的模块功能等等。 这些功能在为⽤户提 供⽅便的同时， 也进⼀步扩⼤了 Redis 的适⽤范围， 读者可以通过阅读这⼀部分来学会如何将 Redis 应⽤在更 多场景中。

开源社区的发展脚步，云数据库 Redis 版目前已经全面 支持 Redis 社区3.2版本的 GEO 功能。 Config Get 命令 Config Get 命令放开限制。 LUA 支持 LUA 脚本放开限制，标准版-双节点、标准版-单节点支持用户直接调用。 集群版本条件性支持： 所有 key 都应该由 KEYS 数组来传递，redis.call/pcall 里面调用的 io/topics/lru-cache DB 即 Redis 中的 Database。云数据库 Redis 版支持 256个 DB：DB 0 到 DB 255。默认写入到第0个 DB 中。 `"-ERR bad lua script for redis cluster, all the keys that the script uses should be passed using the KEYS array\r\n"`

doesn't support SQL or any other query language. Instead of that it supports and build-in commands LUA . scripts Redis commands can be executed in the same way as in Redis comand line shell: In order order to execute LUA script surround it with {} brackets and run as single statement. If script contains empty lines or special characters select script text before execution. ```lua { return {1,2

doesn't support SQL or any other query language. Instead of that it supports and build-in commands LUA . scripts Redis commands can be executed in the same way as in Redis comand line shell: In order order to execute LUA script surround it with {} brackets and run as single statement. If script contains empty lines or special characters select script text before execution. ```lua { return {1,2

does not support SQL or any other query language. Instead, it supports and . build-in commands LUA scripts Redis commands can be executed in the same way as in a Redis command line shell: In order execute a LUA script, surround it with {} brackets and run it as a single statement. If the script contains empty lines or special characters, select the script text before the execution. ```lua { return

does not support SQL or any other query language. Instead, it supports and . build-in commands LUA scripts Redis commands can be executed in the same way as in a Redis command line shell: In order execute a LUA script, surround it with {} brackets and run it as a single statement. If the script contains empty lines or special characters, select the script text before the execution. ```lua { return

does not support SQL or any other query language. Instead, it supports and . build-in commands LUA scripts Redis commands can be executed in the same way as in a Redis command line shell: In order execute a LUA script, surround it with {} brackets and run it as a single statement. If the script contains empty lines or special characters, select the script text before the execution. ```lua { return

queries, bitmaps, hyperloglogs, geospatial indexes, and streams. Redis has built-in replication, Lua scripting, LRU eviction, transactions, and different levels of on-disk persistence. Additionally manage keys. Redis operates differently from traditional SQL databases. It uses built-in commands and LUA scripting for operations. To execute Redis commands, use the syntax similar to the Redis command . official Redis commands documentation For LUA script execution, enclose the script in curly braces {} and execute it as a single statement. If your LUA script includes empty lines or special characters

queries, bitmaps, hyperloglogs, geospatial indexes, and streams. Redis has built-in replication, Lua scripting, LRU eviction, transactions, and different levels of on-disk persistence. Additionally manage keys. Redis operates differently from traditional SQL databases. It uses built-in commands and LUA scripting for operations. To execute Redis commands, use the syntax similar to the Redis command . official Redis commands documentation For LUA script execution, enclose the script in curly braces {} and execute it as a single statement. If your LUA script includes empty lines or special characters

does not support SQL or any other query language. Instead, it supports and . build-in commands LUA scripts Redis commands can be executed in the same way as in a Redis command line shell: In order execute a LUA script, surround it with {} brackets and run it as a single statement. If the script contains empty lines or special characters, select the script text before the execution. ```lua { return