http://blog.fogcreek.com/the-trello-tech-stack/
That led us toward a single-page app that would generate its UI on the client and accept data updates from a push channel. This is pretty far from any of the work weâve done before at Fog Creek, so from a technical perspective Trello has been an adventure.
Initially, we were wondering how interesting and far-out the stack could be before management got nervous, but our concerns were addressed in an early meeting with Joel, when he said âUse things that are going to work great in two years.â
So we did. We have consistently opted for promising (and often troublesome) new technologies that would deliver an awesome experience over more mature alternatives. Weâre about a year in, and itâs been a lot of fun.