redis安装和redis-cli

深藏阁楼爱情的钟 2022-06-07 07:53 159阅读 0赞

[https://redis.io/documentation][https_redis.io_documentation]

1、安装

wget http://download.redis.io/releases/redis-4.0.2.tar.gz -O /tmp/redis-4.0.2.tar.gz
    cd /tmp
    tar xf redis-4.0.2.tar.gz
    cd redis-4.0.2
    make
    make install   只是安装二进制文件，默认将二进制文件安装到/usr/local/bin
    make  PREFIX=/usr/local/redis install

2、启动

redis-server 
    指定配置文件启动（可以设置认证码）
    cp /tmp/redis-4.0.2/redis.conf  /etc/redis.conf
    redis-server /etc/redis.conf

3、测试是否正常

#redis-cli ping
    PONG

**redis-cli**  
命令行接口command line interface  
模式：命令行|交互式

1、命令行

# redis-cli -h |more
      -h <hostname>   -p <port>   -s <socket>   -a <password>   -r <repeat> -1：无限次   -i <interval>   -n <db> 
    # redis-cli --version
    redis-cli 4.0.2
    # redis-cli incr mycounter
    (integer) 1
    # redis-cli get mycounter
    "1"
    # redis-cli --raw get mycounter
    1
    连续查询某个key
    # redis-cli  -r -1 -i 1 get mycounter

2、交互式

# redis-cli
    127.0.0.1:6379> ping
    PONG
    127.0.0.1:6379> select 1
    OK
    127.0.0.1:6379[1]> dbsize
    (integer) 0
    127.0.0.1:6379[1]> set mycounter 1
    OK
    127.0.0.1:6379[1]> 3 get mycounter  //3次获取该key
    "1"
    "1"
    "1"

3、快速批量导入数据（[https://redis.io/topics/mass-insert][https_redis.io_topics_mass-insert]）

#cat data.txt | redis-cli --pipe
    All data transferred. Waiting for the last reply...
    ERR unknown command 'ET'
    Last reply received from server.
    errors: 1, replies: 2
    解决：
    需要格式转换
    #unix2dos data.txt

4、特殊的操作模式

监控redis server的状态
    $ redis-cli --stat -i <interval>
    
    扫描大的key
    $ redis-cli --bigkeys
    
    以list获取所有keys
    $ redis-cli --scan 
    $ redis-cli --scan |wc -l //key的总数
    $ redis-cli --scan --pattern '*-11*' //匹配某类key
    
    监控redis命令使用情况
    $ redis-cli monitor
    
    监控redis的延迟
    $ redis-cli --latency
    min: 0, max: 1, avg: 0.19 (427 samples)
    --latency：ping命令测试，每秒100次
    
    $ redis-cli --latency-history //15分钟取样一次
    min: 0, max: 1, avg: 0.14 (1314 samples) -- 15.01 seconds range
    min: 0, max: 1, avg: 0.18 (1299 samples) -- 15.00 seconds range
    min: 0, max: 1, avg: 0.20 (113 samples)^C
    
    $ redis-cli --latency -i <interval> //指定取样间隔
    
    
    $redis-cli --intrinsic-latency 5
    --intrinsic-latency
     It does not check the latency of a Redis instance, but the latency of the computer you are running redis-cli on.

[https_redis.io_documentation]: https://redis.io/documentation
[https_redis.io_topics_mass-insert]: https://redis.io/topics/mass-insert