Almost all applications these days need background workers to process jobs. Sidekiq is the best option for processing jobs efficiently in Ruby.
To turn on Sidekiq background workers, all you need to do is deploy your app and visit the Sidekiq page to enable it for your app.
Each app gets its own Sidekiq instance so they can all process jobs separately.
You're also free to deploy any other background workers you like to your server with HatchBox.
You can edit the deploy script or add your own systemd scripts manually to manage other workers like Delayed Job, Resque, or others.