Spring Boot Scheduling

Configure scheduled tasks and distributed locking with ShedLock in Spring Boot. Use when implementing @Scheduled tasks or distributed locking with ShedLock in Spring Boot.

HoangNguyen0403 Updated 542 repo stars

File contents

Spring Boot Scheduling Standards

Priority: P0 (CRITICAL)

Configure Scheduled Tasks

  • ThreadPool: ALWAYS configure dedicated TaskScheduler (default 1 thread). Enable with @EnableScheduling annotation.
  • Async: Keep @Scheduled methods light; offload to @Async/Queues. Wrap logic in try/catch; log errors and use @Retryable for retry on transient failures.

Lock Tasks with ShedLock

  • Problem: @Scheduled runs on ALL pods in K8s.
  • Solution: Use ShedLock to guarantee single execution.
  • Config: Set lockAtMostFor (deadlock safety) and lockAtLeastFor (debounce).

See implementation examples for ShedLock distributed task configuration and scheduler pool setup.

Anti-Patterns

  • No Default Pool: Configure dedicated TaskScheduler (default 1 thread).
  • No duplicates: Use ShedLock for distributed cron in multi-pod deployments.
  • No task state: Design tasks to idempotent; assume pod can restart.

References

  • Implementation Examples

HoangNguyen0403/agent-skills-standard/tree/main/skills/spring-boot/spring-boot-scheduling commit 238f0e9e2b

Frequently asked questions

npx skillmds@latest add hoangnguyen0403/spring-boot-scheduling