---
title: "bf exists · RUAL Documentation"
description: "Check if an item may exist in a Bloom filter. Returns true if the item may exist (with the configured false-positive rate), false if it definitely does…"
canonical: https://docs.rual.nl/block-types/redis/redis_bloom_exists
language: en
---

# bf exists

This block is part of the [`redis`](https://docs.rual.nl/block-types/redis) group and was last modified in core [`v14.0.4`](https://docs.rual.nl/core-versions/140004).

Check if an item may exist in a Bloom filter. Returns `true` if the item may exist (with the configured false-positive rate), `false` if it definitely does not exist.

| `redis bf.exists` |
| --- |
| `bf.exists` |
| `bloom exists` |

### Core Releases