bf.card

Returns the cardinality of a bloom filter which is the number of items that have been successfully added to it.

Examples

127.0.0.1:6379> BF.ADD key val
(integer) 1
127.0.0.1:6379> BF.CARD key
(integer) 1
127.0.0.1:6379> BF.CARD nonexistentkey
(integer) 0