It’s a well-known stereotype that “Ruby is slow”. People say it on Slashdot. People say it on OSNews. People say it on my MSN contact list. A few quotes: “If you care even a little about performance, you don’t use Ruby.” “You thought Python is slow? Well Ruby is even slower!” Another stereotype we hear is that “Ruby on Rails doesn’t scale”. Most of the people who say that seem to use PHP, so they