redis 127.0.0.1:6379> keys * 列出所有的key
1) "myset1"
2) "mylist5"
3) "key2"
4) "mail"
5) "muset2"
6) "myset2"
7) "mylist6"
8) "mylist2"
9) "mysset"
10) "myset3"
11) "mylist7"
12) "mylist3"
13) "mhash"
14) "age"
15) "name"
16) "key"
17) "myset4"
18) "myset"
19) "mylist4"
20) "mylist"
21) "myhash"
22) "key1"
redis 127.0.0.1:6379> keys my* 可匹配的
1) "myset1"
2) "mylist5"
3) "myset2"
4) "mylist6"
5) "mylist2"
6) "mysset"
7) "myset3"
8) "mylist7"
9) "mylist3"
10) "myset4"
11) "myset"
12) "mylist4"
13) "mylist"
14) "myhash"
redis 127.0.0.1:6379> exists pengdi 检查key是否存在
(integer) 0
redis 127.0.0.1:6379> exists key1
(integer) 1
redis 127.0.0.1:6379> del key1 删除key
(integer) 1
redis 127.0.0.1:6379> exists key1
(integer) 0
redis 127.0.0.1:6379> expire mylist 10 设置key的过期时间
(integer) 1
redis 127.0.0.1:6379> ttl mylist 检查key过期的时间 -1表示已经过期
(integer) 1
redis 127.0.0.1:6379> exists mylist
(integer) 0
redis 127.0.0.1:6379> ttl mylist
(integer) -1
redis 127.0.0.1:6379> persist mylist 移除过期的key
(integer) 0
redis 127.0.0.1:6379> randomkey 随机获得一个key
"mylist3"
redis 127.0.0.1:6379> rename myhash myhash1 重命名一个key
OK
redis 127.0.0.1:6379> type myhash1 查看key的类型
hash