Its a vue.js site that I host statically on Netlify, with django backend on heroku that pulls all the data. The trick to get things to load quickly is caching the data on https://www.keycdn.com/ (with the right headers you can set it up that the CDN queries the slow pages in the background and serves the cached ones meanwhile to keep things near real-time). I might do a writeup about that it took me a while to figure out.