Use unicorn_rails as web server in production

- Change procfile
- Remove thin
- Use 4 worker processes
- Use unicorn_rails instead of "unicorn"

Gemfile

@@ -87,11 +87,16 @@ gem 'routing-filter'
 gem 'activemerchant', '1.17.0', require: 'active_merchant'
 gem 'httpclient',     '2.2.5'
 
-# Server
-gem 'thin'
+
 
 group :production do
 
+  # Gem used to handle image uploading
+  gem 'fog'
+
+  # Workers, forks and all that jazz
+  gem 'unicorn'
+
   # Enabling Gzip on Heroku
   # If you don't use Heroku, please comment the line below.
   gem 'heroku-deflater', '~> 0.4.1'

Gemfile.lock

@@ -224,6 +224,7 @@ GEM
     kaminari (0.14.1)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
+    kgio (2.8.0)
     launchy (2.2.0)
       addressable (~> 2.3)
     libxml-ruby (2.3.3)
@@ -253,6 +254,7 @@ GEM
     net-scp (1.1.0)
       net-ssh (>= 2.6.5)
     net-ssh (2.6.6)
+    newrelic_rpm (3.6.0.78)
     nokogiri (1.4.7)
     oauth (0.4.7)
     oauth2 (0.8.1)
@@ -316,6 +318,7 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
+    raindrops (0.10.0)
     rake (10.0.3)
     rdoc (3.12.2)
       json (~> 1.4)
@@ -415,6 +418,10 @@ GEM
     uglifier (1.0.4)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
+    unicorn (4.6.2)
+      kgio (~> 2.6)
+      rack
+      raindrops (~> 0.7)
     valuable (0.9.8)
     vimeo (1.5.3)
       httparty (>= 0.4.5)
@@ -470,6 +477,7 @@ DEPENDENCIES
   mailcatcher
   mocha (~> 0.10.4)
   moip!
+  newrelic_rpm
   omniauth
   omniauth-facebook (= 1.4.0)
   omniauth-twitter
@@ -489,11 +497,10 @@ DEPENDENCIES
   shoulda
   sidekiq (~> 2.7.5)
   sinatra
-  slim
   slim-rails
   spectator-validates_email
   state_machine
-  thin
   uglifier (~> 1.0.3)
+  unicorn
   validation_reflection!
   weekdays

Procfile

@@ -1,2 +1,2 @@
-web: bundle exec rails server -p $PORT
+web: bundle exec unicorn_rails -p $PORT -c config/unicorn.rb
 worker: bundle exec sidekiq -C config/sidekiq.yml

config/unicorn.rb

@@ -0,0 +1,38 @@
+# Due to catarse's heavy page load, we are setting it to 4 workers
+# 1024/4 = 240MB for each web worker
+# 512/4  = 128MB for each web worker (in this case, make it 3 worker processes)
+worker_processes 3
+
+# Requests with more than 30 sec will be killed
+timeout 30
+
+
+# Preload entire app for fast forking.
+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 sent QUIT'
+  end
+
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.establish_connection
+end
+
+
+# Please, run it like this `bundle exec unicorn_rails -c config/unicorn.rb -p 3000`
+# And change port or other params as you'd like.
+