Ruby on Rails and scaling

David Heinemeier Hansson has written a rebuttal to the “it doesn’t scale” argument in defense of Ruby on Rails. It’s a good, concise article that applies equally well to all of the variants of LAMP. If someone is giving you grief about scaling something in Python/Ruby/PHP/Perl or Java without EJB, David’s article and Ryan Tomayko’s earlier article provide good counters so you don’t have to write your own.