Some folks from New Relic gave a talk at RubyConf this year about upgrading their old-for-Rails project from 2 to 3, I found it pretty informative http://www.co

Some folks from New Relic gave a talk at RubyConf this year about upgrading their old-for-Rails project from 2 to 3, I found it pretty informative http://www.confreaks.com/videos/2425-railsconf2013-changing-the-wheels-on-the-bus-at-80-mph-upgrading-to-rails-3-on-a http://www.confreaks.com/videos/2425-railsconf2013-changing-...