Redis命令使用

1、登陆redis

redis-cli -h 127.0.0.1 -p 6379 -a 'passwrod'
redis-cli -h 127.0.0.1 -p 6379 --user 'xxx'  --pass 'xxx'

2、帮助信息查询

2.1、help

2.1.1、查询使用方法

127.0.0.1:6379> help
redis-cli 6.2.5
To get help about Redis commands type:
      "help @<group>" to get a list of commands in <group>
      "help <command>" for help on <command>
      "help <tab>" to get a list of possible help topics
      "quit" to exit

To set redis-cli preferences:
      ":set hints" enable online hints
      ":set nohints" disable online hints
Set your preferences in ~/.redisclirc

2.1.2、redis命令行历史记录位置

~/.redisclirc

2.2、命令组分类

@generic 通用的命令组
@string 字符相关命令组
@list 列表相关命令组
@set 集合相关命令组
@sorted_set 有序集合相关命令组
@hash hash相关命令组
@pubsub 发布订阅相关命令组
@transactions 事务相关命令组
@connection 连接相关命令组
@server 服务相关命令组
@scripting 脚本相关命令组
@hyperloglog 超级日志相关命令组
@cluster 集群相关命令组
@geo 基因类数据相关命令组
@stream 流数据相关命令组


# 使用方法： help @string

3、命令基本操作【实践】

3.1、ping

测试是否ping通

ping

3.2、dbsize

查看当前数据库的key的数量

DBSIZE 
(integer) 0

3.3、select

选择数据库

select 0

3.4、info

查看所有属性信息
info cluster
info cpu

3.5、 config get

获取配置属性

config get bind

3.6、keys

获取所有的key信息
127.0.0.1:6379> help keys

  KEYS pattern
  summary: Find all keys matching the given pattern
  since: 1.0.0
  group: generic

3.7、exists

判断一个key是否存在

127.0.0.1:6379> help EXISTS

  EXISTS key [key ...]
  summary: Determine if a key exists
  since: 1.0.0
  group: generic

3.8、set

设置一个key

127.0.0.1:6379> help set

  SET key value [EX seconds|PX milliseconds|EXAT timestamp|PXAT milliseconds-timestamp|KEEPTTL] [NX|XX] [GET]
  summary: Set the string value of a key
  since: 1.0.0
  group: string

3.9、get

获取一个key

127.0.0.1:6379> help get

  GET key
  summary: Get the value of a key
  since: 1.0.0
  group: string

3.10、del

删除一个key
127.0.0.1:6379> help del

  DEL key [key ...]
  summary: Delete a key
  since: 1.0.0
  group: generic

3.11、type

查看key的类型

127.0.0.1:6379> help type

  TYPE key
  summary: Determine the type stored at key
  since: 1.0.0
  group: generic

3.12、expire

设置一个有过期期限的key

127.0.0.1:6379> help EXPIRE 

  EXPIRE key seconds
  summary: Set a key's time to live in seconds
  since: 1.0.0
  group: generic

3.13、ttl

127.0.0.1:6379> help ttl

  TTL key
  summary: Get the time to live for a key
  since: 1.0.0
  group: generic

3.14、flushdb

 删除当前库的所有key

127.0.0.1:6379> help flushdb
  FLUSHDB [ASYNC|SYNC]
  summary: Remove all keys from the current database
  since: 1.0.0
  group: server

3.15、flushall

# 删除当前数据库所有的数据

127.0.0.1:6379> help flushall
  FLUSHALL [ASYNC|SYNC]
  summary: Remove all keys from all databases
  since: 1.0.0
  group: server