With the announcement of Rails 4.2 came some exciting news: Rails now has built-in support for executing jobs in the background using Active Job. The ability to schedule newsletters, follow-up emails, and database housekeeping tasks is vital to almost any production application. In the past, developers had to hand-roll this functionality, and configuration varied between different queueing service
![Getting Started With Active Job](https://cdn-ak-scissors.b.st-hatena.com/image/square/91487b4c042373ab995cd31e03b187e043d0b3d2/height=288;version=1;width=512/https%3A%2F%2Fblog.engineyard.com%2Fhubfs%2Factive-job.webp%23keepProtocol)