Cron Jobs Are Older Than the Internet — And They...

I once spent three hours debugging a production issue that turned out to be a cron job firing at 2 AM and locking a database table. The oncall engineer before me had spent four hours on the same issue six months earlier. Neither of us left a comment. Classic. If you've ever been bitten by a mysterious scheduled task, a job that silently failed for weeks, or a timezone bug that only appeared during daylight saving time — this article is your therapy session and your cheat sheet. Let's go deep on