Action Controller Parameters Allows you to choose which attributes should be permitted for mass updating and thus prevent accidentally exposing that which shouldn’t be exposed.| api.rubyonrails.org
Rails::Railtie is the core of the Rails framework and provides several hooks to extend Rails and/or modify the initialization process.| api.rubyonrails.org
The Instrumentation API in ActiveSupport serves a dual purpose. You can use it to implement the observer (pub-sub) pattern, as well as benchmark how long it took to execute some action. In this post, we'll learn almost everything you need to know about the Rails Instrumentation API.| Write Software, Well
Streamlining the Rails upgrade process.| Skroutz Engineering
Notifications ActiveSupport::Notifications provides an instrumentation API for Ruby. Instrumenters To instrument an event you just need to do: ActiveSupport::Notifications.| api.rubyonrails.org