Installation and startup of redis

One 、redis brief introduction ：

Concept ：Redis yes One Open source （ Free of charge ） High performance  key-value ( A name corresponds to a value , For example, a name corresponds to a person ) Of database .reids Born in 2009 year .

Redis Application scenarios ： Hot data （ Microblog hot search , hot news ）, Count （ Statistics of likes , Click count ）, Message queue （ Commodity seckill , Rush purchase ）, Ranking List , The shopping cart , Luck draw , User recommendation, etc

Redis characteristic ：

1、 High performance
2、 Support multiple data structures
character string string
list list
Hash hash
aggregate set
Sortable sets sorted_set
3、 Data persistence , Data recovery can be done

Two 、Redis Download and install （linux）

1、 Official website  https://redis.io/  Download the corresponding version , use xftp Upload to linux On

2、 adopt wget download ：

http://download.redis.io/releases/, Select the version and right-click the copy link

3、 Enter a command on the server ：

wget

http://download.redis.io/releases/redis-6.0.0.tar.gz

4、 decompression ：tar -zxvf redis-6.0.0.tar.gz

5、 Get into redis Catalog , compiling ：make  ( If an error ：gcc：not found , You need to install gcc, perform ：yum -y install gcc )

6、redis Execute under directory ：make install （ Add commands to environment variables /usr/local/bin in ）

3、 ... and 、Redis Startup and shutdown

start-up ：

1、 The front desk starts ：redis-server

2、 Background start ：redis-server & （ recommend ）

3、 Specify profile startup redis service ：

redis-server redis.conf &

close ：

1、kill Order to kill the process

2、redis-cli shutdown

Four 、Redis client

redis-cli yes Redis Built in client program , Connect to Redis The server , The implementation and Redis Server interaction . We use the client to execute redis The order of .

1、 Start command ：redis-cli （ Default connection 127.0.0.1, Port number 6379 Of redis service ）

2、 Specify the port start command ：redis-cli -p Port number

3、 Appoint ip The address specifies the start command of the port number ：redis-cli -h ip Address -p Port number

4、 Exit client ：exit

After entering the client, you can use the command to redis operation .

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