Redis-key的设计技巧
1.把表名转换为key前缀, 比如: tag:
2.第二段放置用于区分key的字段--对应mysql中的主键的列名
3.第三段放置主键值
4.第三段写列名
用户表user, 转换为redis的key-value存储
比如:
127.0.0.1:6379> set user:userid:9:username lisi OK 127.0.0.1:6379> set user:userid:9:password 111111 OK 127.0.0.1:6379> set user:userid:9:email lisi@163.com OK 127.0.0.1:6379> 127.0.0.1:6379> keys user:userid:9* #查找有几个属性 1) "user:userid:9:password" 2) "user:userid:9:username" 3) "user:userid:9:email" 127.0.0.1:6379>
注意: 实际中经常要通过username来查找信息, 只能通过再建立一个对应关系
127.0.0.1:6379> set user:username:lisi:userid 9 #建立一个username和userid对应的表 OK 127.0.0.1:6379> 127.0.0.1:6379> get user:username:lisi:userid #获取到userid "9" 127.0.0.1:6379> 127.0.0.1:6379> keys user:userid:9* #通过userid找到所有键 1) "user:userid:9:password" 2) "user:userid:9:username" 3) "user:userid:9:email" 127.0.0.1:6379> 127.0.0.1:6379> get user:userid:9:email #获取其它键的信息 "lisi@163.com" 127.0.0.1:6379>
如果要通过email查询, 只能再维护
127.0.0.1:6379> set user:email:lisi@163.com:userid 9 OK 127.0.0.1:6379> get user:email:lisi@163.com:userid "9" 127.0.0.1:6379> keys user:userid:9* 1) "user:userid:9:username" 2) "user:userid:9:email" 3) "user:userid:9:password" 127.0.0.1:6379>