How do you handle when Heroku sends a SIGTERM to kill your process? I couldn't find a way to preempt running workers, so everything running on Heroku has to finish within 10 seconds or you can lose it.
Author of go-workers here. On SIGTERM, I stop accepting new work, and wait for all running workers to finish before halting.
If workers take longer than the 10 seconds Heroku gives you, go-workers uses reliable queueing (using http://redis.io/commands/brpoplpush) so the job will run again next time you start up the process.