Redis Zrevrank Command

Redis Sorted Sets (sorted set)

The Redis Zrevrank command returns the ranking of members in the sorted set. The members in the sorted set are sorted by score value in descending order (from large to small).

The ranking starts from 0, which means that the member with the highest score value has a ranking of 0.

Using the ZRANK command, you can obtain the ranking of members sorted by score value in ascending order (from small to large).

Syntax

The basic syntax of the redis Zrevrank command is as follows:

redis　127.0.0.1:6379> ZREVRANK key member

Available Version

>= 2.2.0

Return Value

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

Online Examples

redis　127.0.0.1:6379> ZRANGE salary 0　-1　WITHSCORES # Test data
1)"jack"
2)"2000"
3)"peter"
4)"3500"
5)"tom"
6)"5000"
redis　127.0.0.1:6379> ZREVRANK salary peter # peter's salary is the second
(integer)　1
redis　127.0.0.1:6379> ZREVRANK salary tom # tom's salary is the highest
(integer) 0

Redis Sorted Sets (sorted set)