All about Rails

Demo: Carpool by: Rajat Suri

Rajat explains how he produced the idea of Carpool, and how Facebook was the perfect (only?) platform to build it. Facebook already has the users, and it connects people that already trust each other (at least on some level).

The app is pretty cool, it shows rides offered and needed, how many miles the user has travelled, and how many CO2 emissions have been avoided by carpooling. Rajat should talk to Zero Footprint about this :)

Demo: My Aquarium by Greg Thomson

This developer's applications have a total of 2.6 million users and 75,000 new users per day. (wow!)

Greg talked about profile updates, which apparently have a failure rate of 5%. He solved the problem by having a queue that runs all of the time, attempting requests until they succeed.