How I architected my big Rails app for success!

Rails is a great framework for creating web apps... for awhile. What do you do when your codebase grows large? How do you handle large teams of developers? When performance becomes an issue, how do you scale? Most importantly, how do you write code which can easily be refactored later?

This is a story of a real life project built from day 1 with all these questions in mind. Learn from our mistakes and successes!