Redis 常用命令之-----键值命令

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键值命令
这里就不介绍方法与描述啦，自己看例子
1、keys 查看key

127.0.0.1:6379> keys *
1) "skey2"
2) "skey1"
3) "name"
4) "zkey1"
127.0.0.1:6379> keys s*
1) "skey2"
2) "skey1"

2、del删除key

127.0.0.1:6379> keys *
1) "skey2"
2) "skey1"
3) "name"
4) "zkey1"
127.0.0.1:6379> del name
(integer) 1
127.0.0.1:6379> keys *
1) "skey2"
2) "skey1"
3) "zkey1"
127.0.0.1:6379> del skey2 skey1
(integer) 2
127.0.0.1:6379> keys *
1) "zkey1"

3、dump序列号key并返回

127.0.0.1:6379> zadd zkey 3 sunshine 5 sunshineboy
(integer) 2
127.0.0.1:6379> ZRANGE zkey 1 2 withscores
1) "sunshineboy"
2) "5"
127.0.0.1:6379> dump zkey
"\x0c&&\x00\x00\x00#\x00\x00\x00\x04\x00\x00\bsunshine\n\xf4\x02\x0bsunshineboy\r\xf6\xff\x06\x00\xddX6\xa7I\x85\x00\x91"

4、exists测试key是否存在

127.0.0.1:6379> keys *
1) "zkey"
127.0.0.1:6379> exists zkey
(integer) 1
127.0.0.1:6379> exists zkey1
(integer) 0

5、expire设置过期时间

127.0.0.1:6379> keys *
1) "zkey"
127.0.0.1:6379> expire zkey 10
(integer) 1
127.0.0.1:6379> ttl zkey
(integer) 5
127.0.0.1:6379> ttl zkey
(integer) -2
127.0.0.1:6379> keys *
(empty list or set)

6、persist取消设定的过期时间

127.0.0.1:6379> zadd zkey1 1 sunshine
(integer) 1
127.0.0.1:6379> keys *
1) "zkey1"
127.0.0.1:6379> EXPIRE zkey1 200
(integer) 1
127.0.0.1:6379> ttl zkey1
(integer) 195
127.0.0.1:6379> ttl zkey1
(integer) 193
127.0.0.1:6379> PERSIST zkey1
(integer) 1
127.0.0.1:6379> ttl zkey1
(integer) -1
127.0.0.1:6379> keys *
1) "zkey1"

7、move把当前数据库的key移动到指定的数据库去

127.0.0.1:6379> select 1
OK
127.0.0.1:6379[1]> keys *
(empty list or set)
127.0.0.1:6379[1]> select 0
OK
127.0.0.1:6379> keys *
1) "zkey1"
127.0.0.1:6379> MOVE zkey1 1
(integer) 1
127.0.0.1:6379> keys *
(empty list or set)
127.0.0.1:6379> select 1
OK
127.0.0.1:6379[1]> keys *
1) "zkey1"

8、pexpire设置过期时间单位毫秒

127.0.0.1:6379[1]> PEXPIRE zkey1 8000000
(integer) 1
127.0.0.1:6379[1]> PTTL zkey1
(integer) 7992155

9、pttl以毫秒为单位返回

127.0.0.1:6379[1]> PEXPIRE zkey1 8000000
(integer) 1
127.0.0.1:6379[1]> PTTL zkey1
(integer) 7992155

10、ttl以秒为单位返回

127.0.0.1:6379[1]> EXPIRE zkey1 9000
(integer) 1
127.0.0.1:6379[1]> ttl zkey1
(integer) 8995

11、randomkey随机弹出当前库的key

127.0.0.1:6379[1]> keys *
1) "lkey"
2) "lkey1"
3) "zkey1"
127.0.0.1:6379[1]> RANDOMKEY
"zkey1"
127.0.0.1:6379[1]> RANDOMKEY
"zkey1"
127.0.0.1:6379[1]> RANDOMKEY
"lkey"

12、rename修改当前库key的名称，成功返回0

127.0.0.1:6379[1]> keys *
1) "lkey"
2) "lkey1"
3) "zkey1"
127.0.0.1:6379[1]> RENAME zkey1 zzkey1
OK
127.0.0.1:6379[1]> keys *
1) "zzkey1"
2) "lkey"
3) "lkey1"

13、renamenx修改当前库key的名称，仅仅适用于key存在

127.0.0.1:6379[1]> keys *
1) "zzkey1"
2) "lkey"
3) "lkey1"
127.0.0.1:6379[1]> RENAMENX zzkey1 zkey1
(integer) 1
127.0.0.1:6379[1]> keys *
1) "lkey"
2) "zkey1"
3) "lkey1"
127.0.0.1:6379[1]> RENAMENX zzkey1 newzkey1
(error) ERR no such key
127.0.0.1:6379[1]> keys *
1) "lkey"
2) "zkey1"
3) "lkey1"

14、type查看当前key键值的存储类型

127.0.0.1:6379[1]> keys *
1) "lkey"
2) "zkey1"
3) "lkey1"
127.0.0.1:6379[1]> TYPE lkey
list
127.0.0.1:6379[1]> TYPE zkey1
zset

键值命令就介绍完毕啦！~

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