Slim down HTTP responses

If you're using a Rack-based web framework you can very easily slim down your responses by compressing them.

To achieve this you just have to use the Rack::Deflater middleware, like so:

# config.ru
require 'rack'
require './app'

use Rack::Deflater

run Sinatra::Application

Yes, that's all there is to it!

Now any client that sets the Accept-Encoding: gzip,deflate header will benefit from smaller responses.