文件：

https://redis.io/topics/rediscli

help命令：

The command can be used in two forms:

1. help @<category> shows all the commands about a given category. The categories are: 
   @generic, @list, @set, @sorted_set, @hash, @pubsub, @transactions, @connection, @server, @scripting, @hyperloglog.
 
2. help <commandname> shows specific help for the command given as argument.

比如 help @cluster 檢視所有與cluster有關的命令。

檢視狀態的命令：

redis-cli --stat

遍歷所有的資料：

redis-cli --scan

監控：

redis-cli monitor