Twitter isn't your standard Rails application. It was hacked out with Rails because it was easy with Rails. Nobody clearly understood that Twitter wasn't a trad

Twitter isn't your standard Rails application. It was hacked out with Rails because it was easy with Rails. Nobody clearly understood that Twitter wasn't a traditional Rails app until it was too late. The biggest scaling issue with frameworks (like Rails) that obscure the database operations, which tend to be the most expensive, is that inexperienced developers won't spend time picking through the logs, trying to find ways to eliminate or speed up queries.