Opera Software is mainly known for its web browser, but Opera also created and develops a growing set of web applications like its own community dedicated to the browser, my.opera.com, started in 2001. Since then, the community grew bigger and bigger, and had the "usual" scalability problems. The application has been rewritten 3 times and the current developers team is at a turning point now. How to make the application and systems scalable with the growing amount of traffic and users?