命令行 设置redis 时间

127.0.0.1:6379> set name jack
OK
127.0.0.1:6379> expire jack 20
(integer) 0
127.0.0.1:6379> ttl jack
(integer) -2
127.0.0.1:6379> expire name 20
(integer) 1
127.0.0.1:6379> ttl name
(integer) 16
127.0.0.1:6379> ttl name
(integer) 14
127.0.0.1:6379> ttl name
(integer) 13
127.0.0.1:6379> ttl name
(integer) 12
127.0.0.1:6379> ttl name
(integer) 11
127.0.0.1:6379> ttl name
(integer) 10
127.0.0.1:6379> ttl name
(integer) 9
127.0.0.1:6379> ttl name
(integer) 8
127.0.0.1:6379> ttl name
(integer) 7