Sidekiq for background jobs

Gemfile

@@ -17,6 +17,7 @@ gem 'faker'
 gem 'fog'
 gem 'simple_form'
 gem 'redcarpet'
+gem 'sidekiq'
 
 # Gems used only for assets and not required
 # in production environments by default.

Gemfile.lock

@@ -54,6 +54,7 @@ GEM
       xpath (~> 0.1.4)
     carrierwave (0.5.8)
       activesupport (~> 3.0)
+    celluloid (0.10.0)
     childprocess (0.3.0)
       ffi (~> 1.0.6)
     coffee-rails (3.2.2)
@@ -67,6 +68,7 @@ GEM
     commonjs (0.2.0)
       therubyracer (~> 0.9.9)
     confstruct (0.2.1)
+    connection_pool (0.9.1)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     excon (0.9.6)
@@ -201,6 +203,9 @@ GEM
     rdoc (3.12)
       json (~> 1.4)
     redcarpet (2.1.0)
+    redis (2.2.2)
+    redis-namespace (1.1.0)
+      redis (< 3.0.0)
     rspec (2.8.0)
       rspec-core (~> 2.8.0)
       rspec-expectations (~> 2.8.0)
@@ -236,6 +241,12 @@ GEM
       ffi (~> 1.0.9)
       json_pure
       rubyzip
+    sidekiq (0.11.1)
+      celluloid (~> 0.10.0)
+      connection_pool (~> 0.9.0)
+      multi_json
+      redis
+      redis-namespace
     simple_form (1.5.2)
       actionpack (~> 3.0)
       activemodel (~> 3.0)
@@ -298,6 +309,7 @@ DEPENDENCIES
   rspec-rails
   ruby-debug19
   sass-rails
+  sidekiq
   simple_form
   tailor
   twitter-bootstrap-rails

app/workers/thumbnail_worker.rb

@@ -1,7 +1,9 @@
 require 'tempfile'
 
 class ThumbnailWorker
-  def self.perform(asciicast_id)
+  include Sidekiq::Worker
+
+  def perform(asciicast_id)
     asciicast = Asciicast.find(asciicast_id)
 
     in_data_file = Tempfile.new('asciiio-data', :encoding => 'ascii-8bit')