Use redis as cache storage. cache events

Gemfile

@@ -103,6 +103,9 @@ gem 'settingslogic'
 gem "foreman"
 gem "git"
+# Cache
+gem "redis-rails"
+
 group :assets do
   gem "sass-rails",   "~> 3.2.5"
   gem "coffee-rails", "~> 3.2.2"

Gemfile.lock

@@ -329,8 +329,24 @@ GEM
       json (~> 1.4)
     redcarpet (2.2.2)
     redis (3.0.2)
+    redis-actionpack (3.2.3)
+      actionpack (~> 3.2.3)
+      redis-rack (~> 1.4.0)
+      redis-store (~> 1.1.0)
+    redis-activesupport (3.2.3)
+      activesupport (~> 3.2.3)
+      redis-store (~> 1.1.0)
     redis-namespace (1.2.1)
       redis (~> 3.0.0)
+    redis-rack (1.4.2)
+      rack (~> 1.4.1)
+      redis-store (~> 1.1.0)
+    redis-rails (3.2.3)
+      redis-actionpack (~> 3.2.3)
+      redis-activesupport (~> 3.2.3)
+      redis-store (~> 1.1.0)
+    redis-store (1.1.3)
+      redis (>= 2.2.0)
     request_store (1.0.5)
     rspec (2.12.0)
       rspec-core (~> 2.12.0)
@@ -504,6 +520,7 @@ DEPENDENCIES
   rb-fsevent
   rb-inotify
   redcarpet (~> 2.2.2)
+  redis-rails
   rspec-rails (= 2.12.2)
   sass-rails (~> 3.2.5)
   sdoc

app/views/events/_event.html.haml

 - if event.proper?
+  = cache event do
     %div.event-item
       %span.cgray.pull-right
         #{time_ago_in_words(event.created_at)} ago.

config/environments/production.rb

@@ -40,7 +40,7 @@ Gitlab::Application.configure do
   # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new)
   # Use a different cache store in production
-  config.cache_store = :memory_store
+  config.cache_store = :redis_store
   # Enable serving of images, stylesheets, and JavaScripts from an asset server
   # config.action_controller.asset_host = "http://assets.example.com"