Redis connection redis service command

Redis Connection redis The service command

1.auth

The command is used to detect whether the given password matches the password in the configuration file .
Return value ： Returns when the password matches OK , Otherwise an error is returned .

AUTH PASSWORD 

2.select

Select The command switches to the specified database , Database index number index Specify... With numeric values , With 0 As the starting index value .
By default 0 The database

SELECT index 

3.ping

Ping The command uses the client to Redis Server sends a PING , If the server works properly , Will return a PONG .
It is usually used to test whether the connection to the server is still valid , Or to measure the delay value .
If the connection is OK, return a PONG , Otherwise, a connection error is returned .

PING 

4.quit

The command is used to close the connection with the current client and redis Service connection
Return value ： Always returns OK .

5.echo

Echo Command to print a given string
Return value ： Returns the string itself .

 ECHO message

6.clear

Clear the information on the screen

clear

7.help

Get the command help document , Get all command information names in the group

help  Command name 
help @ Group name