cache first commit

app/controllers/pages_controller.rb

@@ -3,10 +3,11 @@ class PagesController < ApplicationController
   include ApplicationHelper
 
   before_filter :get_item, :only => [:index_from_link, :show_from_link]
-  
+
   def index
     @item = Page.find_by_name('home')
-    if @item
+
+    if @item && (stale? etag: @item.updated_at)
       impressionist(@item)
       render_page
     else