BF.MEXISTS
Syntax
BF.MEXISTS key item [item ...]
- Available in:
- Redis Stack / Bloom 1.0.0
- Time complexity:
- O(k * n), where k is the number of hash functions and n is the number of items
Determines whether one or more items were added to a Bloom filter.
This command is similar to BF.EXISTS
, except that more than one item can be checked.
Required arguments
key
is key name for a Bloom filter.
item...
One or more items to check.
Return value
Returns one of these replies:
- Array reply of Integer reply - where "1" means that, with high probability,
item
was already added to the filter, and "0" means thatkey
does not exist or thatitem
was definitely not added to the filter. - [] on error (invalid arguments, wrong key type, etc.)
Examples
redis> BF.MADD bf item1 item2
1) (integer) 1
2) (integer) 1
redis> BF.MEXISTS bf item1 item2 item3
1) (integer) 1
2) (integer) 1
3) (integer) 0