shell 操作redis部分：
==> Successfully started `redis@4.0` (label: homebrew.mxcl.redis@4.0)
[~/java]$ redis-serve
zsh: command not found: redis-serve
[~/java]$ source ~/.zshrc
[oh-my-zsh] Random theme '/Users/maixiao/.oh-my-zsh/themes/sorin.zsh-theme' loaded...
java ❯ redis-serve
zsh: command not found: redis-serve
java ❯ brew services start redis@4.0 ⏎
Service `redis@4.0` already started, use `brew services restart redis@4.0` to restart.
java ❯ brew services restart redis@4.0
Stopping `redis@4.0`... (might take a while)
==> Successfully stopped `redis@4.0` (label: homebrew.mxcl.redis@4.0)
==> Successfully started `redis@4.0` (label: homebrew.mxcl.redis@4.0)
java ❯ redis-cli
127.0.0.1:6379>
127.0.0.1:6379>
127.0.0.1:6379> append msg hello
(integer) 5
127.0.0.1:6379> append mas word
(integer) 4
127.0.0.1:6379> append msg word
(integer) 9
127.0.0.1:6379> LPUSH languages python java C#
(integer) 3
127.0.0.1:6379> lpop languages
"C#"
127.0.0.1:6379> sadd myset zhangsan lisi wangwu zhaoliu
(integer) 4
127.0.0.1:6379> sadd myset zhangsan lisi wangwu zhaoliu
(integer) 0
127.0.0.1:6379> smenbers myset
(error) ERR unknown command `smenbers`, with args beginning with: `myset`,
127.0.0.1:6379> smembers myset
1) "zhangsan"
2) "lisi"
3) "wangwu"
4) "zhaoliu"
127.0.0.1:6379> sismember myset wangwu
(integer) 1
127.0.0.1:6379> sismember myset wangliu
(integer) 0
127.0.0.1:6379> docker images
(error) ERR unknown command `docker`, with args beginning with: `images`,
127.0.0.1:6379> KEYS *
1) "\"emp-01\""
2) "msg"
3) "Spring-redis-test-list"
4) "\"Spring-employeeRedisTemplate\""
5) "myset"
6) "\xac\xed\x00\x05t\x00\x1aSpring-redis-test-Employee"
7) "languages"
127.0.0.1:6379> DEL \xac\xed\x00\x05t\x00\x1aSpring-redis-test-Employee
(integer) 0
127.0.0.1:6379> KEYS *
1) "\"emp-01\""
2) "msg"
3) "Spring-redis-test-list"
4) "\"Spring-employeeRedisTemplate\""
5) "myset"
6) "\xac\xed\x00\x05t\x00\x1aSpring-redis-test-Employee"
7) "languages"
127.0.0.1:6379> DEL "\xac\xed\x00\x05t\x00\x1aSpring-redis-test-Employee"
(integer) 1
127.0.0.1:6379> KEYS *
//删除当前数据库中的所有Key
flushdb
//删除所有数据库中的key
flushall
