Rack (Web Server Interface)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Rack provides a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between (the so-called middleware) into a single method call. Rack is available as a Ruby Gem and is installed using gem install rack. The current version is 1.1. Rack has already inspired a JavaScript framework and resulted in the Ruby developer quasi-standard of "rack-compliant"