Redis of common operations

Redis of common operations

1. redis client login

1. Local use redis client login

   redis-cli

2. Use client login on the remote server

   # 格式
   redis-cli -h host -p port -a password

2. Set password

1. Configure the password in the configuration file (even restart the service can be effective)

   # 编辑redis的配置文件 redis.conf
   requirepass ${密码}
   
   # 重启redis服务，在redis服务中执行：
   shutdown
   
   # 登录时，使用密码：
   redis-cli -p 6379 -a ${密码}
   
   # 登录后，使用密码：
   redis-cli -p 6379
   
   redis 127.0.0.1:6379> auth ${密码}
   OK

2. Set in memory (redis after the restart, password expiration)

   redis 127.0.0.1:6379> config set requirepass ${密码}
   
   # 查询密码：
   redis 127.0.0.1:6379> config get requirepass
   (error) ERR operation not permitted
   
   # 密码验证：
   redis 127.0.0.1:6379> auth test123
   OK
   
   # 再次查询
   redis 127.0.0.1:6379> config get requirepass
   1) "requirepass"
   2) "test123"

3. Get redis configuration

1. Get all of the configuration redis

   CONFIG GET *

2. Configuration changes reids

   127.0.0.1:6379> CONFIG GET loglevel
   1) "loglevel"
   2) "notice"
   
   # 更改
   127.0.0.1:6379> CONFIG GET loglevel
   1) "loglevel"
   2) "notice"
   127.0.0.1:6379> CONFIG SET loglevel "notice"
   OK
   127.0.0.1:6379> CONFIG GET loglevel
   1) "loglevel"
   2) "notice"

4. redis键（key）

Key redis redis key commands for managing the

grammar

The basic syntax redis key command is as follows:

redis 127.0.0.1:6379> COMMAND KEY_NAME

Examples

127.0.0.1:6379> set name "hello world"
OK
127.0.0.1:6379> get name
"hello world"
127.0.0.1:6379> del name
(integer) 1
127.0.0.1:6379> get name
(nil)

In the above example is a command del, name is a bond. If the key is deleted successfully, after executing the command output (integer) 1, otherwise the output (integer) 0

Redis keys (yellow focus)

command	description
==del key==	This command deletes the user key in the key presence
dump key	Serialization the existence of a given key
==exists key==	Check whether there is a given key
==expire key seconds==	For a given setting key expiration time, in seconds stage
==expireat key timestamp==	Expireat similar effect and expire, are used to set the expiration time for the key. Unlike expireat time parameters are accepted command unix timestamp
pexpire key milliseconds	Key expiration time setting in milliseconds
pexpire key milliseconds-timestamp	Key expiration timestamps provided, in milliseconds
==keys pattern==	Find all match a given pattern key, such as keys a *
move key db	Key to move the current database to which a given database db
==persist key==	Removes the key expiration time, key will endure
pttl key	Milliseconds returns the remaining expiration time of the key.
==rename key newkey==	Modify the name of the key
renamenx key newkey	Only when newkey does not exist, the key renamed newkey
type key	Returns the type of the stored key value
randomkey	It returns a random key from the current database

More commands, refer to: https://redis.io/commands