https://github.com/milgradesec/doh-cache-worker

A Cloudflare Worker to make DNS over HTTPS requests cacheable at edge.
https://github.com/milgradesec/doh-cache-worker

cloudflare-workers dns-over-https serverless

Last synced: 2 months ago
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A Cloudflare Worker to make DNS over HTTPS requests cacheable at edge.

• Host: GitHub
• URL: https://github.com/milgradesec/doh-cache-worker
• Owner: milgradesec
• License: mit
• Created: 2021-10-26T10:31:35.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2025-09-08T02:52:09.000Z (7 months ago)
• Last Synced: 2025-09-08T04:26:46.203Z (7 months ago)
• Topics: cloudflare-workers, dns-over-https, serverless
• Language: TypeScript
• Homepage:
• Size: 73.2 KB
• Stars: 19
• Watchers: 1
• Forks: 9
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# ⚡ doh-cache ⚡

👷 `doh-cache` is a Cloudflare Worker to make DNS over HTTPS requests cacheable at edge.

🚀 Running in production at ****

## How it Works

`doh-cache` accepts DNS-over-HTTPS (DoH) **POST** request, rewrites them as equivalent **GET** requests, and then uses Cloudflare’s **Cache API** to store the results at the edge.

On a cache hit, responses are served from the nearest Cloudflare data center, dramatically reducing latency. On a miss, the worker fetches from the upstream DoH resolver, caches the response, and returns it to the client.

## License

MIT License