Runbooks written by the expert were unusable by anybody else, so the second person wrote them and the expert reviewed.
## The queue is backed up
1. Confirm: `./bin/queue-depth`. Above 1,000 for more
than 5 minutes is a real backlog.
2. Which queue? `./bin/queue-depth --by-queue`
3. Are the workers running? `systemctl status worker@*`
— expect 6 active.
4. If fewer than 6: `systemctl start worker@{1..6}` and
stop here.
5. If 6 and still growing, one job is stuck: ...The expert’s version of step one was “check the queue”; the version written by somebody who did not know said which command, which number, and for how long. Every runbook we had was written by the person who did not need it, which is why none of them were usable — inverting that is the whole trick and it is uncomfortable for both people.