---
description: Cache everything for hostnames in a list
title: Cache everything for hostnames in a list
image: https://developers.cloudflare.com/og-docs.png
---

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# Cache everything for hostnames in a list

Cache everything for hostnames in a list

Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cache/how-to/cache-rules/examples/cache-by-hostname-list/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/)

[Create a cache rule](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cache/how-to/cache-rules/create-dashboard/) to cache everything for hostnames that match a [custom hostname list](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/tools/lists/custom-lists/#lists-with-hostnames):

* **When incoming requests match**: Custom filter expression

  * Using the Expression Builder:  
  `Hostname is in list "my_hostnames"`
  * Using the Expression Editor:  
  `(http.host in $my_hostnames)`
* **Then**:

  * **Cache eligibility**: Eligible for cache

Note

The **is in list** operator requires an Enterprise plan. You must first [create a hostname list](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/waf/tools/lists/create-dashboard/) in your account before you can reference it in a cache rule expression.

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