ZLEXCOUNT key min max
When all the elements in a sorted set are inserted with the same score, in order to force lexicographical ordering, this command returns the number of elements in the sorted set at
key with a value between
max arguments have the same meaning as described for ZRANGEBYLEX.
Note: the command has a complexity of just O(log(N)) because it uses elements ranks (see ZRANK) to get an idea of the range. Because of this there is no need to do a work proportional to the size of the range.
Integer reply: the number of elements in the specified score range.
(integer) 5redis> ZADD myzset 0 f 0 g
(integer) 2redis> ZLEXCOUNT myzset - +
(integer) 7redis> ZLEXCOUNT myzset [b [f
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