CF.COUNT
Syntax
CF.COUNT key item
Time complexity: O(k), where k is the number of sub-filters
ACL categories: @cuckoo
Returns the number of times item occurs in the Cuckoo filter at key.
Since CF.ADD allows duplicate insertions, the same item can occupy more than one
slot. CF.COUNT reports how many slots currently match item, which may include false positives.
If key does not exist, 0 is returned.
Return
Integer reply: the number of occurrences of item in the filter.
Examples
dragonfly> CF.ADD cf foo
(integer) 1
dragonfly> CF.ADD cf foo
(integer) 1
dragonfly> CF.COUNT cf foo
(integer) 2
dragonfly> CF.COUNT cf bar
(integer) 0
dragonfly> CF.COUNT no_such_key foo
(integer) 0