Install delayed job

Gemfile

@@ -35,6 +35,7 @@ gem 'sorcery'
 gem 'will_paginate', '~> 3.0'
 gem 'activerecord-postgresql-adapter'
 gem 'pg'
+gem 'delayed_job_active_record'
 
 group :production do
 	gem 'unicorn'

Gemfile.lock

@@ -48,6 +48,11 @@ GEM
     coffee-script-source (1.4.0)
     curb (0.7.18)
     debug_inspector (0.0.2)
+    delayed_job (3.0.5)
+      activesupport (~> 3.0)
+    delayed_job_active_record (0.4.3)
+      activerecord (>= 2.1.0, < 4)
+      delayed_job (~> 3.0)
     erubis (2.7.0)
     execjs (1.4.0)
       multi_json (~> 1.0)
@@ -171,6 +176,7 @@ DEPENDENCIES
   better_errors
   binding_of_caller
   coffee-rails (~> 3.2.1)
+  delayed_job_active_record
   feedzirra
   haml-rails
   htmlentities

db/migrate/20130326114555_create_delayed_jobs.rb

@@ -0,0 +1,22 @@
+class CreateDelayedJobs < ActiveRecord::Migration
+  def self.up
+    create_table :delayed_jobs, :force => true do |table|
+      table.integer  :priority, :default => 0      # Allows some jobs to jump to the front of the queue
+      table.integer  :attempts, :default => 0      # Provides for retries, but still fail eventually.
+      table.text     :handler                      # YAML-encoded string of the object that will do work
+      table.text     :last_error                   # reason for last failure (See Note below)
+      table.datetime :run_at                       # When to run. Could be Time.zone.now for immediately, or sometime in the future.
+      table.datetime :locked_at                    # Set when a client is working on this object
+      table.datetime :failed_at                    # Set when all retries have failed (actually, by default, the record is deleted instead)
+      table.string   :locked_by                    # Who is working on this object (if locked)
+      table.string   :queue                        # The name of the queue this job is in
+      table.timestamps
+    end
+
+    add_index :delayed_jobs, [:priority, :run_at], :name => 'delayed_jobs_priority'
+  end
+
+  def self.down
+    drop_table :delayed_jobs
+  end
+end

db/schema.rb

@@ -11,7 +11,23 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20130320181527) do
+ActiveRecord::Schema.define(:version => 20130326114555) do
+
+  create_table "delayed_jobs", :force => true do |t|
+    t.integer  "priority",   :default => 0
+    t.integer  "attempts",   :default => 0
+    t.text     "handler"
+    t.text     "last_error"
+    t.datetime "run_at"
+    t.datetime "locked_at"
+    t.datetime "failed_at"
+    t.string   "locked_by"
+    t.string   "queue"
+    t.datetime "created_at",                :null => false
+    t.datetime "updated_at",                :null => false
+  end
+
+  add_index "delayed_jobs", ["priority", "run_at"], :name => "delayed_jobs_priority"
 
   create_table "feeds", :force => true do |t|
     t.string   "title"
@@ -29,7 +45,7 @@ ActiveRecord::Schema.define(:version => 20130320181527) do
     t.integer "layer_id"
   end
 
-  add_index "feeds_layers", ["feed_id", "layer_id"], :name => "index_feeds_layers_on_feed_id_and_layer_id"
+  add_index "feeds_layers", ["feed_id", "layer_id"], :name => "index_feeds_layers_on_feed_id_and_layer_id", :unique => true
 
   create_table "layers", :force => true do |t|
     t.string   "name"

script/delayed_job

@@ -0,0 +1,5 @@
+#!/usr/bin/env ruby
+
+require File.expand_path(File.join(File.dirname(__FILE__), '..', 'config', 'environment'))
+require 'delayed/command'
+Delayed::Command.new(ARGV).daemonize