Redis common functions

Sort by:

sort mylist  排序
sort mylist alpha desc limit 0 2 字母排序
sort list by it:* desc           by命令
sort list by it:* desc get it:*  get参数
sort list by it:* desc get it:* store sorc:result  sort命令之store参数：表示把sort查询的结果集保存起来

Subscribe to the publication:

订阅频道：subscribe chat1
发布消息：publish chat1 "hell0 ni hao"
查看频道：pubsub channels
查看某个频道的订阅者数量: pubsub numsub chat1
退订指定频道： unsubscrible chat1   , punsubscribe java.*
订阅一组频道： psubscribe java.*

redis things:

• Isolation, atomicity,
• Step: Start a transaction, execute commands, commit the transaction

multi  //开启事务
sadd myset a b c
sadd myset e f g
lpush mylist aa bb cc
lpush mylist dd ff gg

Server Management:

• dump.rdb: RDB way of backup files
• appendonly.aof: AOF way of backup files
• BgRewriteAof asynchronous execution of a aop (appendOnly file) overwriting files, it creates an optimized version of the current file size of AOF

    BgSave  #后台异步保存数据到磁盘，会在当前目录下创建文件dump.rdb
    save    #同步保存数据到磁盘，会阻塞主进程，别的客户端无法连接
    
    client kill     #关闭客户端连接
    client list     #列出所有的客户端
    
    #给客户端设置一个名称
    client setname myclient1
    client getname 
    
    config get port
    configRewrite   #对redis的配置文件进行改写