keys * 显示所有key

127.0.0.1:6379> keys *

 1) "sort1"

 2) "l2"

 3) "set2"

 4) "r1"

 5) "h1"

 6) "n2"

 7) "l3"

 8) "r2"

 9) "s1"

10) "set3"

11) "set1"

12) "r3"

13) "n"

14) "n3"

15) "nn"

16) "l1"

查找所有以s开头的key

用s*  *代表任意字符

127.0.0.1:6379> keys s*

1) "sort1"

2) "set2"

3) "s1"

4) "set3"

5) "set1"

查找所有s开头 后面紧跟任意一个字符的key

127.0.0.1:6379> keys s?

1) "s1"

del删除key

127.0.0.1:6379> del n2 n3 nn

(integer) 3

exists判断key是否存在 1表示存在  0表示不存在

127.0.0.1:6379> exists n2

(integer) 0

127.0.0.1:6379> exists l1

(integer) 1

get获取元素

127.0.0.1:6379> get n

"1"

rename对key重命名

127.0.0.1:6379> rename n n2

OK

127.0.0.1:6379> get n

(nil)

127.0.0.1:6379> get n2

"1"

expire 设置n2 有效时间

127.0.0.1:6379> expire n2 120

(integer) 1

ttl查看剩余时间

127.0.0.1:6379> ttl n2

(integer) 116

type显示类型

127.0.0.1:6379> type n2

string

127.0.0.1:6379> type l1

list

127.0.0.1:6379> type s1

string

127.0.0.1:6379> type sort1

zset