Pancake is primarily a tool for making rack applications. Rack has come up in the Ruby web world as the framework that matters when developing web applications. All the major frameworks use it, although many of the application frameworks and their middlewares are not really re-usable away from their specific implementations yet.
Pancake addresses this by making Rack the fundamental building block of an application. It provides very useful helpers on top of Rack that assist in constructing Rack stacks as mixins. Almost all key aspects of web frameworks are covered in Pancake as mixins to help you create your own re-usable Rack Stacks without worrying about the really low level plumbing.
This README is a very high level overview only and doesn’t really cover a great deal of Pancake unfortunately.
Stacks
While Rack provides the low level framework for building web applications on, Pancake provides a stack as a place to start your application. A stack provides a whole bunch of behavior for you including a router and middleware stack. The stack will accept any valid Rack application as the endpoint. If you’re not familiar with what makes a valid Rack application it basically comes down to an object that receives the “call” method with exactly one argument, the environment hash, and returns an array with exactly 3 elements. The status, headers and body.from https://github.com/hassox/pancake,
http://pancakestacks.wordpress.com/
