BF.EXISTS

Syntax

BF.EXISTS key item

Time complexity: O(1)

ACL categories: @bloom

Checks for the existence of a single item in a Bloom filter key.

Return

Integer reply:

• 1 if the item exists with a high probability.
• 0 if the item definitely does not exist.

Examples

dragonfly> BF.ADD bf Hello
(integer) 1

dragonfly> BF.EXISTS bf Hello
(integer) 1

dragonfly> BF.EXISTS bf World
(integer) 0

See also

BF.ADD | BF.MEXISTS