看了上一篇的介绍，是不是急不可耐地想试试怎么玩转redis？这就来轻食入门篇。这篇文章主要使用CRUD四个命令。
try redis
官方提供了一个线上客户端用于测试和练习。网址是https://try.redis.io/
tryredisio.png
> set wanzhouyi strong
OK
> get wanzhouyi
"strong"
> set wanzhouyi nice
OK
> get wanzhouyi
"nice"
> del wanzhouyi
(integer) 1
> get wanzhouyi
(nil)
命令解释：
- set wanzhouyi strong （增）设置wanzhouyi为键，strong为值
- get wanzhouyi （查）获取键为wanzhouyi的值
- set wanzhouyi nice （改）修改wanzhouyi的值为nice
- del wanzhouyi （删）删除wanzhouyi这个键
ubuntu本地安装
第一步：安装redis
安装命令：sudo apt install redis-server
ubuntu_install1.png
第二步：启动redis
启动命令：redis-server
start_redis_server.png
从上图中也可以看到一个关键信息，默认端口是6379。
第三步：用客户端测试连接
打开客户端：redis-cli
mango@wanzhouyi:~$ redis-cli
127.0.0.1:6379> ping
PONG
127.0.0.1:6379>
收到pong返回，说明客户端和服务端成功建立连接。
第四步：接下来就可以开始愉快地CRUD了。
mango@wanzhouyi:~$ redis-cli
127.0.0.1:6379> set wanzhouyi strong
OK
127.0.0.1:6379> get wanzhouyi
"strong"
127.0.0.1:6379> set wanzhouyi nice
OK
127.0.0.1:6379> get wanzhouyi
"nice"
127.0.0.1:6379> del wanzhouyi
(integer) 1
127.0.0.1:6379> get wanzhouyi
(nil)
127.0.0.1:6379>
docker 下 redis的使用
第一步：查看可用docker镜像
mango@wanzhouyi:~$ sudo docker search redis
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
redis Redis is an open source key-value store that… 9471 [OK]
bitnami/redis Bitnami Redis Docker Image 181 [OK]
sameersbn/redis 83 [OK]
grokzen/redis-cluster Redis cluster 3.0, 3.2, 4.0, 5.0, 6.0, 6.2 78
rediscommander/redis-commander Alpine image for redis-commander - Redis man… 58 [OK]
redislabs/redisearch Redis With the RedisSearch module pre-loaded… 34
redislabs/redisinsight RedisInsight - The GUI for Redis 30
redislabs/redis Clustered in-memory database engine compatib… 30
oliver006/redis_exporter Prometheus Exporter for Redis Metrics. Supp… 25
arm32v7/redis Redis is an open source key-value store that… 23
redislabs/rejson RedisJSON - Enhanced JSON data type processi… 23
bitnami/redis-sentinel Bitnami Docker Image for Redis Sentinel 22 [OK]
redislabs/redisgraph A graph database module for Redis 15 [OK]
redislabs/redismod An automated build of redismod - latest Redi… 12 [OK]
arm64v8/redis Redis is an open source key-value store that… 12
webhippie/redis Docker images for Redis 11 [OK]
insready/redis-stat Docker image for the real-time Redis monitor… 10 [OK]
s7anley/redis-sentinel-docker Redis Sentinel 10 [OK]
goodsmileduck/redis-cli redis-cli on alpine 9 [OK]
circleci/redis CircleCI images for Redis 7 [OK]
centos/redis-32-centos7 Redis in-memory data structure store, used a… 5
clearlinux/redis Redis key-value data structure server with t… 3
tiredofit/redis Redis Server w/ Zabbix monitoring and S6 Ove… 1 [OK]
wodby/redis Redis container image with orchestration 1 [OK]
xetamus/redis-resource forked redis-resource 0 [OK]
mango@wanzhouyi:~$
第二步：拉取镜像
由于本文没有特殊要求，直接拉取最新镜像。
mango@wanzhouyi:~$ sudo docker pull redis:latest
latest: Pulling from library/redis
69692152171a: Pull complete
a4a46f2fd7e0: Pull complete
bcdf6fddc3bd: Pull complete
b7e9b50900cc: Pull complete
5f3030c50d85: Pull complete
63dae8e0776c: Pull complete
Digest: sha256:365eddf64356169aa0cbfbeaf928eb80762de3cc364402e7653532bcec912973
Status: Downloaded newer image for redis:latest
docker.io/library/redis:latest
mango@wanzhouyi:~$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
redis latest bc8d70f9ef6c 10 days ago 105MB
mango@wanzhouyi:~$
第三步：运行容器
mango@wanzhouyi:~$ sudo docker run -itd --name redis-test -p 6379:6379 redis
f9dc3718228ae45b20d82499b5311cce2634e13bdf77157313937a9a910bc077
mango@wanzhouyi:~$ sudo docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
f9dc3718228a redis "docker-entrypoint.s…" 45 seconds ago Up 44 seconds 0.0.0.0:6379->6379/tcp redis-test
mango@wanzhouyi:~$
上面的命令通过-p 6379:6379将容器服务的 6379 端口映射到宿主机的 6379 端口。外部可以直接通过宿主机ip:6379 访问到 Redis 的服务。
第四步：进入容器愉快地CRUD
mango@wanzhouyi:~$ sudo docker exec -it redis-test /bin/bash
root@f9dc3718228a:/data# redis-cli
127.0.0.1:6379> set wanzhouyi strong
OK
127.0.0.1:6379> get wanzhouyi
"strong"
127.0.0.1:6379> set wanzhouyi nice
OK
127.0.0.1:6379> get wanzhouyi
"nice"
127.0.0.1:6379> del wanzhouyi
(integer) 1
127.0.0.1:6379>
第五步：在宿主机上愉快地CRUD
mango@wanzhouyi:~$ redis-cli
127.0.0.1:6379> set wanzhouyi strong
OK
127.0.0.1:6379> get wanzhouyi
"strong"
127.0.0.1:6379> set wanzhouyi nice
OK
127.0.0.1:6379> get wanzhouyi
"nice"
127.0.0.1:6379> del wanzhouyi
(integer) 1
127.0.0.1:6379>
mango@wanzhouyi:~$
最后
本文通过三种方式轻轻地玩耍了一下redis，分别是在线方式、ubuntu主机方式、redis容器方式。作为使用redis的第一扇大门将由此开启。
