delayed_task
delayed_task allows you to run any rake task in the background using delayed_job.
Install
# Gemfile
gem 'delayed_task'
# Rakefile (at the end)
require 'tasks/delayed_tasks'
Usage
Add delay: to the start of any rake task e.g.
$ rake delay:db:seed
rake db:seed will now be run in the background as a delayed_job