CF.EXISTS

Syntax
CF.EXISTS key item
Available in:
Redis Open Source / Bloom 1.0.0
Time complexity:
O(k), where k is the number of sub-filters
ACL categories:
@cuckoo, @read, @slow,

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.

Required arguments

key

is key name for a cuckoo filter.

item

is an item to check.

Examples

redis> CF.ADD cf item1
(integer) 1
redis> CF.EXISTS cf item1
(integer) 1
redis> CF.EXISTS cf item2
(integer) 0

One of the following:

  • Integer reply: 1 means that, with high probability, item was already added to the filter, and 0 means that either the key does not exist or that the item had not been added to the filter.
  • Simple error reply if invalid arguments are passed.
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