http://edgeguides.rubyonrails.org/4_0_release_notes.html Rails 4 compilation links http://blog.wyeworks.com/2012/11/13/rails-4-compilation-links/ There already have been some documents from which we can get the changes.
common web application, though. Triglav has minimalistic features providing API set to retrieve hosts information. It copes with users’ complicated demands with loose-coupled architecture. Of course, it’s written in the Edge Rails.