Xiaolin Talks Programming

Jun 18, 2026 · Backend Development

Spring Boot Scheduled Tasks: Dynamic Cron & Cluster Duplicate Prevention

This article explores production-grade Spring Boot scheduled tasks, covering dynamic Cron hot-reloading via configuration listeners, cluster duplicate prevention using distributed locks, framework selection between Quartz and XXL-JOB, data sharding strategies, observability, timeout handling, and retry mechanisms with dead-letter queues.