# cf\_dev

* [Free Lmits](#free-lmits)
* [Worker](#worker)
  * [py](#py)
  * [js](#js)

## Free Lmits

<https://developers.cloudflare.com/workers/platform/limits/>

* CPU time per HTTP request 10 ms

## Worker

<https://developers.cloudflare.com/workers/languages/>

* JavaScript + TypeScript
* Python Workers
* Rust

### py

<https://developers.cloudflare.com/workers/languages/python/>

* beta @ 2026 March

### js

<https://developers.cloudflare.com/workers/tutorials/build-a-qr-code-generator/>

```
npm create cloudflare@latest -- qr-code-generator

npx wrangler deploy
```