unfinished jobs should auto-cancel?

[jfischl]

Consider a case where there is a job queue and a worker has taken a job from the queue but has not finished it. While the job is being processed, the worker restarts. It appears that this job will never be given to another worker. Presumably, the jobs should have an optional timeout period after which they will be automatically cancelled.

[fritzy]

Yes. I'll add an example manage script. The in-flight jobs are in a zset organized by time, so you can have a manage script occasionally look at these values and retry or stall those jobs.