CF.EXISTS key item
- Available in:
- Redis Stack / Bloom 1.0.0
- Time complexity:
- O(k), where k is the number of sub-filters
Determines whether a given item was added to a cuckoo filter.
This command is similar to
CF.MEXISTS, except that only one item can be checked.
is key name for a cuckoo filter.
is an item to check.
Returns one of these replies:
- Integer reply, where
1means that, with high probability,
itemhad already been added to the filter, and
keydoes not exist or that
itemhad not been added to the filter. See note in
- Error reply on error (invalid arguments, wrong key type, and so on)
redis> CF.ADD cf item1 (integer) 1 redis> CF.EXISTS cf item1 (integer) 1 redis> CF.EXISTS cf item2 (integer) 0