Redis之學習-鍵值操作
1，keys pattern通用鍵查詢
在redis裏,允許模糊查詢key
有3個通配符 , ? ,[]
: 通配任意多個字符
?: 通配單個字符
[]: 通配括號內的某1個字符
127.0.0.1:6379> keys
1) "What"
127.0.0.1:6379> keys What
1) "What"
127.0.0.1:6379> get What
"laoyang"
127.0.0.1:6379> keys Wha
1) "What"
127.0.0.1:6379> keys Wha[ty]
1) "What"
127.0.0.1:6379> keys Wha?
1) "What"
2，randomkey返回隨機key名的
127.0.0.1:6379> set chief yuhao
OK
127.0.0.1:6379> randomkey
"chief"
127.0.0.1:6379> randomkey
"What"
3，判斷key的類型
127.0.0.1:6379> type chief
string
4，判斷key存不存在
(integer) 1
返回1就是存在，0為 不存在
5，rename key
如果key存在，就會覆蓋蓋key
6，move key 將某個key移動到其他庫中
127.0.0.1:6379> keys
1) "yuhao"
2) "What"
127.0.0.1:6379> move yuhao 1
(integer) 1
127.0.0.1:6379> get yuhao
(nil)
127.0.0.1:6379> keys
1) "What"
7，過期時間--秒為單位的
查詢有效期
127.0.0.1:6379> ttl What
127.0.0.1:6379> get What
"laoyang"
127.0.0.1:6379> expire What 5 設定5秒過期
(integer) 1
127.0.0.1:6379> get What
(nil)
127.0.0.1:6379> keys *
(empty list or set)
Redis之學習-鍵值操作