Posted by Hubert Łępicki on 2011-07-13 Hubert is partner at AmberBit. Rails, Elixir and functional programming are his areas of expertise. Rack middleware is hot topic these days and anyone who is reading Ruby-related blog sites must have heard about it already. However, if you didn’t, here’s short quote from Rack site: Rack provides an minimal interface between webservers supporting Ruby and Ruby
![Introduction to Rack middleware](https://cdn-ak-scissors.b.st-hatena.com/image/square/5710ef95d78ad15126ae799abafb90cc9bf81475/height=288;version=1;width=512/https%3A%2F%2Fwww.amberbit.com%2Fimages%2Fmain-og-image.jpg)