Add unicorn configuration

Author: enricostano

config/unicorn.rb

@@ -0,0 +1,29 @@
+app_path = File.expand_path(File.dirname(__FILE__) + '/..')
+
+worker_processes 2
+
+listen listen 8080, tcp_nopush: true
+
+working_directory app_path
+
+pid app_path + '/tmp/unicorn.pid'
+
+stderr_path '/var/www/timeoverflow/shared/log/unicorn.log'
+stdout_path '/var/www/timeoverflow/shared/log/unicorn.log'
+
+# Load the app up before forking
+# Combine Ruby 2.0.0+ with "preload_app true" for memory savings
+preload_app true
+
+before_fork do |server, worker|
+  # the following is highly recomended for Rails + "preload_app true"
+  # as there's no need for the master process to hold a connection
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.connection.disconnect!
+end
+
+after_fork do |server, worker|
+  # the following is *required* for Rails + "preload_app true"
+  defined?(ActiveRecord::Base) and
+    ActiveRecord::Base.establish_connection
+end