Every day, people watch an average of 3 billion videos on YouTube. Every minute, people upload an average of 48 hours of video to YouTube. YouTube operates at a scale that few other websites will ever see, and it's written mostly in Python.

Mike Solomon is one of the original engineers at YouTube. In this informal, high-level talk, he'll give an overview of the lessons he's learned as he's brought YouTube to scale. He'll also point out ways in which his philosophy on scaling, testing, and writing Python fly in the face of accepted wisdom. Last of all, we'll also be giving a very short introduction to YouTube APIs and how you can integrate your application with YouTube.