Rebuilding the global town square from scratch
Engineering teams at X rebuilt the X.com web application from scratch using AI coding agents, consolidating three separate rendering servers into a single Node.js and Fastify server. The rewrite reduces initial page load times dramatically on slow connections by streaming server-rendered HTML and eliminating the need for browsers to download massive JavaScript bundles before displaying content. Open article →
- X says its updated web app is way faster
- I'm crying: We kicked off the X.com rewrite this spring and it was a massive undertaking. The o...
- X now loads posts and profiles 8-13x faster on slow connections, thanks to streaming server-rende...
- Three implementations became one, and a profile's first post now loads in 2.7 seconds on a slow c...