Lagon is an open-source runtime and platform that allows developers to run TypeScript and JavaScript Functions at the Edge, using V8 Isolates. It's also self-hostable.

Current status:

• Dev: In heavy development, features are being added and APIs have breaking changes
• Alpha: Missing features and bugs to fix, not ready for production usage
• Beta: Stable APIs, last bugs are being fixed and last features are being added
• General Availability: Cloud and self-hosted versions available for production usage

Features

• JavaScript Runtime written in Rust using V8 Isolates
• Native Web APIs like Request, Response...
• 100% open-source
• Deploy APIs, SSR(ed) websites, Webhooks endpoints, Cron jobs...
• CLI to manage Functions and develop locally
• Deploy at the Edge using the Cloud version, or self-host it

Roadmap

The roadmap is accessible to anyone on GitHub. Feel free to open an issue to discuss new features that you would like to see implemented.

See the roadmap on GitHub (opens in a new tab)

How it works

Lagon uses V8 Isolates, which are sandboxed environments used to run plain JavaScript. That means each Function's memory is isolated from each others, and you can run a lot of them at the same time with very few resources. Node.js (opens in a new tab), Electron (opens in a new tab), Deno (opens in a new tab) (and Deno Deploy (opens in a new tab)), Cloudflare Workers (opens in a new tab) are also using V8 Isolates to execute JavaScript.

Starting an Isolate is a lot faster than starting a whole Node.js process, which allows for almost free cold starts.