gistfile1.rb

# Free RESTful interface for your Ruby objects with Rackable
# http://github.com/madx/rackable/tree/master
#
# + Free HTTP caching with rack-cache
# http://github.com/rtomayko/rack-cache/tree/master

require 'rackable'
require 'rack/cache'

APP_ROOT = File.dirname(__FILE__)

use Rack::Cache,
      :metastore   => "file:#{APP_ROOT}/cache/rack/meta",
      :entitystore => "file:#{APP_ROOT}/cache/rack/body",
      :verbose     => true



# Your app
#
class App
  include Rackable
  
  def get
    cache_long # makes Rack-cache kick in
    # just list some files
    Dir['./*'].inspect
  end
  
  private
  
  def cache_long
    rack.header['Cache-Control'] = 'public, max-age=3600'
    rack.header['Etag'] = object_id.to_s
  end
end

# Save as app.ru and run with:
#
#   rackup -p 4000 app.ru
#
run App.new