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Job, CronJob and TTL

Every controller so far runs forever — Deployment, StatefulSet, DaemonSet keep pods alive indefinitely. The Job inverts this: it runs one task until done, then stops, perfect for migrations, backups, batch work. This article closes Part IV with the Job (completions, parallelism, backoffLimit), the CronJob that runs on a cron schedule, and TTL that auto-cleans finished Jobs — testing each on a real cluster, including catching a CronJob fire exactly on the minute boundary.