---
title: Respect Strong ETags · Cloudflare Cache (CDN) docs
description: Respect Strong ETags
lastUpdated: 2024-08-22T18:02:52.000Z
source_url:
  html: https://a74404c8.preview.developers.cloudflare.com/cache/how-to/cache-rules/examples/respect-strong-etags/index.md
  md: https://a74404c8.preview.developers.cloudflare.com/cache/how-to/cache-rules/examples/respect-strong-etags/
---

[Create a cache rule](https://developers.cloudflare.com/cache/how-to/cache-rules/create-dashboard/) to respect strong ETags for any hostname containing `example.com`:

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

  * Using the Expression Builder:\
    `Hostname contains "example.com"`
  * Using the Expression Editor:\
    `(http.host contains "example.com")`

* **Then**:

  * **Cache eligibility**: Eligible for cache
  * **Setting**: Respect strong ETags
    * **Use strong ETag headers**: On
