redis有序集合(Sorted Set)命令html
ZADD ZREM ZCARD ZCOUNT ZSCORE ZINCRBY ZRANGE ZREVRANGE ZRANGEBYSCORE ZREVRANGEBYSCORE ZRANK ZREVRANK ZREMRANGEBYRANK ZREMRANGEBYSCORE ZINTERSTORE ZUNIONSTORE
从上面命令中看到, redis的有序集合(Sorted Set)没有命令判断键是否存在于有序集合中。python
通过一番研究,能够经过zrank()方法来解决。redis
zrank post
功能:返回有序集中指定成员的排名。spa
命令基本语法以下:code
redis 127.0.0.1:6379> ZRANK key member
demohtm
>> ZRANGE salary 0 -1 WITHSCORES # 显示全部成员及其 score 值 1) "peter" 2) "3500" 3) "tom" 4) "4000" 5) "jack" 6) "5000" >> ZRANK salary tom (integer) 1 >> ZRANK salary linly (None)
相关代码blog
from redis import Redis conn=Redis() def zexist(self, name, value): if conn.zrank(name, value): return True return False
python redis 有序集合sorted set检查某个键是否存在get