redis 常用命令总结,redis常用命令
redis 常用命令总结,redis常用命令
keys
返回满足给定条件的所有key 127.0.0.1:6379> keys * 1) "testlist2" 2) "testset4" 3) "testset2" 4) "mytest" 5) "num2" 6) "testset1" 7) "testset3" 8) "testset" 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1" 4) "testset3" 5) "testset"
exists
确认一个key 是否存在 127.0.0.1:6379> exists test (integer) 0 127.0.0.1:6379> exists testset (integer) 1
dbsize
返回当前数据库中key 的数目。 127.0.0.1:6379> dbsize (integer) 10 127.0.0.1:6379> keys * 1) "testlist2" 2) "testset4" 3) "testset2" 4) "mytest" 5) "name_new" 6) "num2" 7) "testset1" 8) "num3" 9) "age1" 10) "num1"
del
删除一个key 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1" 4) "testset3" 5) "testset" 127.0.0.1:6379> del testset (integer) 1 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1" 4) "testset3"
flushdb
删除当前选择数据库中的所有key。 127.0.0.1:6379[1]> keys * 1) "age" 127.0.0.1:6379[1]> flushdb 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> dbsize (integer) 10
flushall
删除所有数据库中的所有key。 127.0.0.1:6379> select 1 OK 127.0.0.1:6379[1]> set age 15 OK 127.0.0.1:6379[1]> keys * 1) "age" 127.0.0.1:6379[1]> flushall OK 127.0.0.1:6379[1]> dbsize (integer) 0 127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> dbsize (integer) 0
expire
设置一个key 的过期时间(单位:秒),ttl命令检测有效时长 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1" 4) "testset3" 127.0.0.1:6379> expire testset3 10 (integer) 1 127.0.0.1:6379> ttl testset3 (integer) 1 127.0.0.1:6379> ttl testset3 (integer) -2 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1"
persist
移除给定key 的过期时间,取消过期 127.0.0.1:6379> expire age 100 (integer) 1 127.0.0.1:6379> ttl age (integer) 94 127.0.0.1:6379> ttl age (integer) 90 127.0.0.1:6379> persist age (integer) 1 127.0.0.1:6379> ttl age (integer) -1 127.0.0.1:6379> get age "15"
select
选择数据库(redis默认16个数据库 0~15) # vim redis.conf # Set the number of databases. The default database is DB 0, you can select # a different one on a per-connection basis using SELECTwhere # dbid is a number between 0 and 'databases'-1 databases 16 127.0.0.1:6379> select 0 OK
move
将当前数据库中的key 转移到其它数据库中 127.0.0.1:6379> select 0 OK 127.0.0.1:6379> set age 15 OK 127.0.0.1:6379> get age "15" 127.0.0.1:6379> select 1 OK 127.0.0.1:6379[1]> get age (nil) 127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> move age 1 (integer) 1 127.0.0.1:6379> select 1 OK 127.0.0.1:6379[1]> get age "15" 127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> get age (nil)
randomkey
随机返回一个key 127.0.0.1:6379> keys * 1) "testlist2" 2) "testset4" 3) "testset2" 4) "mytest" 5) "num2" 6) "testset1" 7) "num3" 8) "age1" 9) "num1" 10) "name" 127.0.0.1:6379> randomkey "num3"
rename
重命名key 127.0.0.1:6379> keys * 1) "testlist2" 2) "testset4" 3) "testset2" 4) "mytest" 5) "num2" 6) "testset1" 7) "num3" 8) "age1" 9) "num1" 10) "name" 127.0.0.1:6379> rename name name_new OK 127.0.0.1:6379> keys name* 1) "name_new"
type
返回值的类型 127.0.0.1:6379> keys testset* 1) "testset4" 2) "testset2" 3) "testset1" 127.0.0.1:6379> type testset1 set 127.0.0.1:6379> keys name* 1) "name_new" 127.0.0.1:6379> type name none 127.0.0.1:6379> keys num* 1) "num2" 2) "num3" 3) "num1" 127.0.0.1:6379> type num1 string
ping
测试连接是否存活 127.0.0.1:6379> ping PONG
echo
在命令行输出内容 127.0.0.1:6379> echo "Hello world!" "Hello world!"
info
获取服务器的信息 127.0.0.1:6379> info
monitor
实时转储收到的请求 127.0.0.1:6379> monitor OK 1543934476.796187 [0 127.0.0.1:52841] "info" 1543934614.406197 [0 127.0.0.1:52841] "config" "get" 1543934632.306195 [0 127.0.0.1:52841] "config" "get" "dir" 1543934662.761337 [0 127.0.0.1:52841] "config" "get" "*"
config get
获取服务器配置信息。 129.127.0.0.1:6379> config get *
quit / shutdown
退出连接。
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