Enabled unicorn worker killer

Gemfile

@@ -61,6 +61,7 @@ group :test do
 end
 
 group :production do
-  gem 'unicorn', '~> 4.7'
-  gem 'dalli',   '~> 2.6.2'
+  gem 'unicorn',               '~> 4.7'
+  gem 'dalli',                 '~> 2.6.2'
+  gem 'unicorn-worker-killer', '~> 0.4.2'
 end

Gemfile.lock

@@ -316,6 +316,8 @@ GEM
       kgio (~> 2.6)
       rack
       raindrops (~> 0.7)
+    unicorn-worker-killer (0.4.2)
+      unicorn (~> 4)
     virtus (1.0.1)
       axiom-types (~> 0.0.5)
       coercible (~> 1.0)
@@ -378,5 +380,6 @@ DEPENDENCIES
   thin (~> 1.5.0)
   uglifier (>= 2.3.1)
   unicorn (~> 4.7)
+  unicorn-worker-killer (~> 0.4.2)
   virtus (~> 1.0.1)
   yajl-ruby (~> 1.1.0)

config.ru

@@ -1,5 +1,8 @@
 # This file is used by Rack-based servers to start the application.
 
+require 'unicorn/worker_killer'
+use Unicorn::WorkerKiller::Oom, (160*(1024**2)), (180*(1024**2))
+
 require ::File.expand_path('../config/environment',  __FILE__)
 
 use Rack::Deflater