Redis Zcount command
Redis ordered set (sorted set)
Redis Zcount command is used to calculate the number of members in the ordered set specified score range.
grammar
redis Zcount basic command syntax is as follows:
redis 127.0.0.1:6379> ZCOUNT key min max
Available versions
> = 2.0.0
return value
Fractional number of members between the min and max.
Examples
redis 127.0.0.1:6379> ZADD myzset 1 "hello" (integer) 1 redis 127.0.0.1:6379> ZADD myzset 1 "foo" (integer) 1 redis 127.0.0.1:6379> ZADD myzset 2 "world" 3 "bar" (integer) 2 redis 127.0.0.1:6379> ZCOUNT myzset 1 3 (integer) 4