So everybody must have heard about the shiny new ActiveJob which is going to be released in the next Rails 4.2 release. ActiveJob is a nice addition to Rails stack that helps standardise the background job interface. It works with many adapters on the market such as Resque, Sidekiq. In the article by Envato’s engineer Trung Lê (@joneslee85) will guide you through how to configure ActiveJob with Sidekiq adapter, additionally he will show you few secret gems behind the ActiveJob such as multi-queue prioritisation, callbacks, exceptions handling, background mailer and live object parsing (GlobalID).