Redis Zrank Command

Redis Sorted Set

Redis Zrank returns the rank of the specified member in the sorted set. Members of the sorted set are ordered by increasing score (from small to large).

Syntax

The basic syntax of the Redis Zrank command is as follows:

redis 127.0.0.1:6379> ZRANK key member

Available Versions

>= 2.0.0

Return Value

If member is a member of the sorted set key, return the rank of member. If member is not a member of the sorted set key, return nil.

Examples

redis 127.0.0.1:6379> ZRANGE salary 0 -1 WITHSCORES        # 显示所有成员及其 score 值
1) "peter"
2) "3500"
3) "tom"
4) "4000"
5) "jack"
6) "5000"

redis 127.0.0.1:6379> ZRANK salary tom                     # 显示 tom 的薪水排名，第二
(integer) 1

Redis Sorted Set

Other Extensions