ZRANK
Returns a member's rank in ascending score order.
Sorted sets · Example verified
Syntax covered here
ZRANK key memberRanks are zero-based; the higher-score member in the two-member case occupies rank 1.
Tested example & replies
Requests below run in order against an empty database. Each connection authenticates with the fixture password first. Quoted values are strings; null is a nil reply; arrays preserve RESP order.
# connection: default
> ZADD scores 1 a 2 b
2
# connection: default
> ZRANK scores b
1