Hacker News Reader

When I want to know things like this (and I usually do) I take a look at their Jobs listings, this usually reveals the technologies used, in this case I found:

Disqus is the largest Django application and one of the largest pure Python implementations on the web. We love JavaScript and write highly optimized code with performance and compatibility in mind.

From Adam Hitchcock's (Disqus engineer) upcoming EuroPython talk description:

"flask, WebScale!, gevent, redis"

https://ep2012.europython.eu/conference/p/adam-hitchcock

On the client-side, poking around in the console leads me to believe they're using Backbone.js

Django still powers a lot of the DISQUS infrastructure. That said, we're in the process of breaking certain parts of it off into independent services and out of Django. But Django will be the main component for the foreseeable future.

Could you talk a bit about why you're doing that?

Don't misread what Fluxx is saying. The core of disqus and our primary data flows are still powered by Django and that won't change. New servers which are less complex (e.g. the realtime system) are generally written on top of Flask.