If your app needs to poll a remote API once an hour, or send out an email report every evening, what tool do you reach for? Probably cron. Triggering events at a given wall clock time is what cron is for, but it works better at the system layer (e.g. rotating logs on a server) than at the app layer (e.g. sending out a daily report to your app’s users). I’ve described all the ways cron could be imp