---
title: "exists key · RUAL Documentation"
description: "Returns true if the given cache key exists."
canonical: https://docs.rual.nl/block-types/cache%20key/function_exists_cache_key
language: en
---

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# exists key

This block is part of the [`cache key`](https://docs.rual.nl/block-types/cache%20key) group and was last modified in core [`v11.0.0`](https://docs.rual.nl/core-versions/110000).

> **Deprecated** This block has been deprecated since `v11.0.0`, please avoid future use.

Returns true if the given cache key exists.

- flow `flow`

- key required `value`

- flow `flow`

- exists `condition`

## Version history

Introduced in [`v11.0.0`](https://docs.rual.nl/core-versions/110000).

Deprecated since [`v11.0.0`](https://docs.rual.nl/core-versions/110000).

- [Back to `cache key`](https://docs.rual.nl/block-types/cache%20key): Return to the main group to view all sub-groups

- [Back to `cache`](https://docs.rual.nl/block-types/cache%20key?group=cache): Return to the group to view all blocks within this group

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