Nice work, glad to see heroku API gems getting some love.<p>I wrote a similar gem back in January and have had good luck with it: <a href="https://github.com/freerobby/middle_management" rel="nofollow">https://github.com/freerobby/middle_management</a><p>It's fully configurable via environment variables, so you can make changes without redeploying. It also lets you specify a minimum number of workers (even if there are zero jobs) so that you don't have to wait for workers to spin up if you don't want to.