Use Unicorn

Gemfile

@@ -11,9 +11,10 @@ gem 'memcachier'
 gem 'newrelic_rpm',    '~> 3.5.3.25'
 gem 'octokit'
 gem "pg"
-gem 'thin'
+gem 'rack-timeout'
 gem 'tilt'
 gem 'tire'
+gem 'unicorn'
 
 # TODO: Remove HTTP Clients
 gem 'excon'
@@ -42,11 +43,14 @@ gem 'uglifier'
 
 group :development do
   gem "awesome_print"
-  gem "shotgun"
-  gem "sqlite3"
+  gem "foreman"
   gem "taps"
 end
 
+group :development, :test do
+  gem "sqlite3"
+end
+
 group :test do
   gem 'factory_girl_rails'
   gem 'shoulda', :require => false

Gemfile.lock

@@ -50,11 +50,10 @@ GEM
     compass-rails (1.0.3)
       compass (>= 0.12.2, < 0.14)
     curb (0.8.5)
-    daemons (1.1.9)
     dalli (2.6.4)
     diff-lcs (1.2.4)
+    dotenv (0.9.0)
     erubis (2.7.0)
-    eventmachine (1.0.3)
     exceptional (2.0.33)
       rack
     excon (0.27.6)
@@ -73,6 +72,9 @@ GEM
       loofah (~> 1.2.1)
       nokogiri (~> 1.6.0)
       sax-machine (~> 0.2.1)
+    foreman (0.63.0)
+      dotenv (>= 0.7)
+      thor (>= 0.13.6)
     fssm (0.2.10)
     haml (4.0.3)
       tilt
@@ -84,6 +86,7 @@ GEM
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
     json (1.8.0)
+    kgio (2.8.1)
     launchy (2.3.0)
       addressable (~> 2.3)
     less (2.4.0)
@@ -120,6 +123,7 @@ GEM
       rack
     rack-test (0.6.2)
       rack (>= 1.0)
+    rack-timeout (0.0.4)
     rails (3.2.15)
       actionmailer (= 3.2.15)
       actionpack (= 3.2.15)
@@ -135,6 +139,7 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
+    raindrops (0.12.0)
     rake (10.1.0)
     rdoc (3.12.2)
       json (~> 1.4)
@@ -154,8 +159,6 @@ GEM
     sax-machine (0.2.1)
       nokogiri (~> 1.6.0)
     sequel (3.20.0)
-    shotgun (0.9)
-      rack (>= 1.0)
     shoulda (3.5.0)
       shoulda-context (~> 1.0, >= 1.0.1)
       shoulda-matchers (>= 1.4.1, < 3.0)
@@ -178,10 +181,6 @@ GEM
     therubyracer (0.12.0)
       libv8 (~> 3.16.14.0)
       ref
-    thin (1.5.1)
-      daemons (>= 1.0.9)
-      eventmachine (>= 0.12.6)
-      rack (>= 1.0.0)
     thor (0.18.1)
     tilt (1.4.1)
     tire (0.6.1)
@@ -199,6 +198,10 @@ GEM
     uglifier (2.2.1)
       execjs (>= 0.3.0)
       multi_json (~> 1.0, >= 1.0.2)
+    unicorn (4.7.0)
+      kgio (~> 2.6)
+      rack
+      raindrops (~> 0.7)
     yajl-ruby (1.1.0)
 
 PLATFORMS
@@ -217,6 +220,7 @@ DEPENDENCIES
   faraday
   faraday_middleware
   feedzirra
+  foreman
   haml
   jquery-rails
   json
@@ -228,18 +232,18 @@ DEPENDENCIES
   newrelic_rpm (~> 3.5.3.25)
   octokit
   pg
+  rack-timeout
   rails (= 3.2.15)
   redcarpet
   rest-client
   rubyzip
   sass-rails
-  shotgun
   shoulda
   sqlite3
   taps
   therubyracer
-  thin
   tilt
   tire
   uglifier
+  unicorn
   yajl-ruby

Procfile

@@ -0,0 +1 @@
+web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb

config/initializers/timeout.rb

@@ -0,0 +1 @@
+Rack::Timeout.timeout = 10

config/unicorn.rb

@@ -0,0 +1,22 @@
+worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
+timeout 15
+preload_app true
+
+before_fork do |server, worker|
+  Signal.trap 'TERM' do
+    puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
+    Process.kill 'QUIT', Process.pid
+  end
+
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.connection.disconnect!
+end
+
+after_fork do |server, worker|
+  Signal.trap 'TERM' do
+    puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
+  end
+
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.establish_connection
+end