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@FMCB, are you saying the same Heroku configuration will work for DigitalOcean?
I guess this will answer your question:
Currently I’m using the delay method (e.g. my_user.delay.background_task) of delayed_job and it’s successfully creating an ActiveRecord entry for the delayed job, but it never runs. How can I make a worker run the delayed_jobs on DigitalOcean using Unicorn?