Use resque-pool

Gemfile

@@ -11,6 +11,7 @@ gem "posix-spawn"
 gem "warden-github-rails"
 gem "faraday"
 gem "faraday_middleware"
+gem "resque-pool"
 
 # Providers
 gem "dpl",        "1.5.7"

Gemfile.lock

@@ -176,6 +176,10 @@ GEM
       vegas (~> 0.1.2)
     resque-lock-timeout (0.4.4)
       resque (~> 1.22)
+    resque-pool (0.5.0)
+      rake
+      resque (~> 1.22)
+      trollop (~> 2.0)
     rspec-core (2.14.7)
     rspec-expectations (2.14.5)
       diff-lcs (>= 1.1.3, < 2.0)
@@ -219,6 +223,7 @@ GEM
     thor (0.19.1)
     thread_safe (0.3.5)
     tilt (1.4.1)
+    trollop (2.1.2)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     unicorn (4.8.2)
@@ -264,6 +269,7 @@ DEPENDENCIES
   rails_12factor
   resque
   resque-lock-timeout
+  resque-pool
   rspec-rails
   rubocop
   simplecov (= 0.7.1)
@@ -273,3 +279,6 @@ DEPENDENCIES
   warden-github-rails
   webmock
   yajl-ruby
+
+BUNDLED WITH
+   1.10.5

Procfile

@@ -1,2 +1,2 @@
 web: bundle exec unicorn -p $PORT -c config/unicorn.rb
-worker: bundle exec rake resque:work QUEUE=*
+worker: TERM_CHILD=1 bundle exec resque-pool

Rakefile

@@ -3,4 +3,14 @@
 
 require File.expand_path("../config/application", __FILE__)
 
+# this task will get called before resque:pool:setup
+# and preload the rails environment in the pool manager
+task "resque:pool:setup" do
+  # close any sockets or files in pool manager
+  ActiveRecord::Base.connection.disconnect!
+  Resque::Pool.after_prefork do
+    ActiveRecord::Base.establish_connection
+  end
+end
+
 Heaven::Application.load_tasks

config/resque-pool.yml

@@ -0,0 +1,2 @@
+---
+  '*': <%= Integer(ENV["WORKER_CONCURRENCY"] || 2) %>