[laureny]

> Rails and Django have moved from the obscure into the mainstream.

For prototyping, maybe (and even that is arguable).

In practice, I see a lot more companies moving away from these frameworks toward JVM-based frameworks than the other way around.

These frameworks simply don't scale past the size of a small project.

[brnlsl]

Built with Rails: Github, Groupon, YellowPages, BaseCamp, Scribd, Shopify, Posterous, Airbnb, Urban Dictionary, Bleacher Report, Kickstarter...

These are not small projects.

[bjt]

> These frameworks simply don't scale past the size of a small project.

That is incorrect. From the Django side, see Instagram (http://instagram-engineering.tumblr.com/post/13649370142/wha...) and Disqus (http://blog.disqus.com/post/62187806135/scaling-django-to-8-...).

[mattmcknight]

Django and Rails both run on the JVM. Both have scaled to massive projects, even without the JVM.