Introduction A batch job that only runs manually is barely useful. Production jobs run on a schedule — nightly, hourly, after a file arrives. Spring Boot provides three scheduling options: Option Persistence Clustered Use when @Scheduled No No Simple cron on a single node Quartz Scheduler Yes (DB) Yes HA scheduling, persistent triggers External scheduler (Kubernetes CronJob, Airflow) Varies Yes Complex pipelines, dependency management @Scheduled — Simple Cron Trigger The simplest approach: annotate a method with @Scheduled and run the job from it.