Simon Willison’s Weblog

How we built JSR (via) Really interesting deep dive by Luca Casonato into the engineering behind the new JSR alternative JavaScript package registry launched recently by Deno.

The backend uses PostgreSQL and a Rust API server hosted on Google Cloud Run.

The frontend uses Fresh, Deno’s own server-side JavaScript framework which leans heavily in the concept of “islands”—a progressive enhancement technique where pages are rendered on the server and small islands of interactivity are added once the page has loaded.