As Michael Hartl [<a href="http://railstutorial.org/book#sec:1.1.2" rel="nofollow">http://railstutorial.org/book#sec:1.1.2</a>] said, you scale a site, not a framework.<p>Or language for that matter.<p>The details on system strategy, design and architecture are far more interesting and valuable than who is running what, other than appeasing unfounded fears.