---
title: Reference
description: Conceptual and technical reference material for Cloudflare Workers architecture and behavior.
image: https://developers.cloudflare.com/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/workers/llms.txt  
> Use this file to discover all available pages before exploring further.

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# Reference

Conceptual knowledge about how Workers works.

* [ How the Cache works ](https://developers.cloudflare.com/workers/reference/how-the-cache-works/)
* [ How Workers works ](https://developers.cloudflare.com/workers/reference/how-workers-works/)
* [ Migrate from Service Workers to ES Modules ](https://developers.cloudflare.com/workers/reference/migrate-to-module-workers/)
* [ Protocols ](https://developers.cloudflare.com/workers/reference/protocols/)
* [ Security model ](https://developers.cloudflare.com/workers/reference/security-model/)

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/workers/","name":"Workers"}},{"@type":"ListItem","position":3,"item":{"@id":"/workers/reference/","name":"Reference"}}]}
```