Update config.ru

config.ru

@@ -1,32 +1,14 @@
 require 'rubygems'
 require 'rack'
-require 'rack/contrib/static_cache'
 require 'rack/contrib/try_static'
-require 'rack/contrib/response_headers'
-
-# Properly compress the output if the client can handle it
-use Rack::Deflater
-
-use Rack::StaticCache,
-  root: 'build',
-  urls: ['/assets/stylesheets', '/assets/javascripts', '/assets/fonts']
 
+# Serve files from the build directory
 use Rack::TryStatic,
   root: 'build',
   urls: %w[/],
-  try: ['.html', 'index.html', '/index.html'],
-  cache_control: 'public, max-age=2592000'
-
-use Rack::ResponseHeaders do |headers|
-  headers['Content-Type'] = 'text/html; charset=utf-8' if headers['Content-Type'] == 'text/html'
-
-  # For anything that matches below this point, we set the surrogate key
-  # for Fastly so that we can quickly purge all the pages without touching
-  # the static assets.
-  headers['Surrogate-Key'] = 'page'
-end
+  try: ['.html', 'index.html', '/index.html']
 
 run lambda{ |env|
-  four_oh_four_page = File.expand_path('../build/404/index.html', __FILE__)
+  four_oh_four_page = File.expand_path("../build/404/index.html", __FILE__)
   [ 404, { 'Content-Type'  => 'text/html'}, [ File.read(four_oh_four_page) ]]
 }