---
description: Use the `cf.vary` request option to control cache variants for Workers subrequests that receive origin Vary responses.
title: Workers fetch requests now support cf.vary
image: https://developers.cloudflare.com/changelog/post/2026-06-28-cf-vary-request-option/og.png?v=19d8ae0a562b3926
---

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June 28, 2026

## Workers fetch requests now support cf.vary

[Workers](https://developers.cloudflare.com/workers/)

Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/changelog/post/2026-06-28-cf-vary-request-option/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

Workers `fetch()` requests now support the `cf.vary` request option. Use `cf.vary` to control how Cloudflare caches origin responses with a `Vary` header for a single subrequest.

*src/index.jsjs*

```js
export default {
	async fetch(request) {
		return fetch(request, {
			cf: {
				vary: {
					default: { action: "bypass" },
					headers: {
						accept: {
							action: "normalize",
							media_types: ["text/html", "application/json"],
						},
						"accept-language": {
							action: "normalize",
							languages: ["en", "fr", "de"],
						},
					},
				},
			},
		});
	},
};
```

*src/index.tsts*

```ts
export default {
	async fetch(request): Promise<Response> {
		return fetch(request, {
			cf: {
				vary: {
					default: { action: "bypass" },
					headers: {
						accept: {
							action: "normalize",
							media_types: ["text/html", "application/json"],
						},
						"accept-language": {
							action: "normalize",
							languages: ["en", "fr", "de"],
						},
					},
				},
			},
		});
	},
} satisfies ExportedHandler;
```

For more information, refer to [`cf.vary`](https://developers.cloudflare.com/workers/runtime-apis/request/#the-cfvary-property).

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```