What is Rack?
There’s a lot of talk about Rack , but unless you’re a framework author yourself, you rarely see it. So what is Rack? And why, as an application developer, should you care about it?
In the previous article, you learned what Rack is. Now, it’s time to start using Rack and serve up some pages.
Using Rack Middleware
One of Rack’s greatest features is the ability to easily plug in middleware applications.
List of Rack Middleware
The following is a list of Rack middleware applications that come with the Rack gem. A brief description of each middleware is given.
The official Rack repository at GitHub.
The official Rack documentation.
Rack Interface Specification
The Rack interface specification. If you're writing a server or web application that needs to interact with Rack, here are all the nitty gritty details.