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Code Ape Tech Column
Code Ape Tech Column
Jan 26, 2026 · Backend Development

Prevent Duplicate Spring @Scheduled Jobs in Multi‑Instance Deployments with ShedLock

When a Spring Boot application using @Scheduled is deployed on multiple servers, each instance triggers the same job, leading to duplicate processing; this article explains why the problem occurs, reviews simple single‑node and Redis lock approaches, and provides a step‑by‑step guide to integrate the ShedLock framework for reliable, annotation‑driven distributed locking.

@ScheduledJavaShedLock
0 likes · 8 min read
Prevent Duplicate Spring @Scheduled Jobs in Multi‑Instance Deployments with ShedLock
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Jan 19, 2026 · Backend Development

How to Ensure Single-Node Execution of Spring Boot @Scheduled Tasks in Distributed Environments

This guide explains why @Scheduled jobs run on every Spring Boot instance in a cluster, and presents three practical solutions—Spring Integration's Redis lock, Redisson, and ShedLock—complete with Maven dependencies, configuration snippets, code examples, and runtime screenshots to guarantee that only one node executes the scheduled task at a time.

Backend DevelopmentRedisShedLock
0 likes · 9 min read
How to Ensure Single-Node Execution of Spring Boot @Scheduled Tasks in Distributed Environments
Programmer DD
Programmer DD
Sep 28, 2025 · Backend Development

How to Ensure Spring Boot Scheduled Tasks Run Only Once with ShedLock

Learn how to prevent duplicate execution of Spring Boot @Scheduled tasks in multi-instance deployments by integrating ShedLock, including Maven dependencies, H2 database setup, LockProvider configuration, and annotation usage to ensure each job runs only once across all nodes.

JavaShedLockSpring Boot
0 likes · 6 min read
How to Ensure Spring Boot Scheduled Tasks Run Only Once with ShedLock
Alibaba Cloud Native
Alibaba Cloud Native
Jul 19, 2024 · Cloud Native

Implement Distributed Scheduled Tasks with Spring Cloud Alibaba SchedulerX

This guide explains why traditional Java timers fail in microservice clusters, introduces Spring Cloud Alibaba's SchedulerX module with high‑availability and lock features, and provides step‑by‑step Maven setup, configuration, and code examples for both Alibaba SchedulerX and the open‑source ShedLock approach.

JavaSchedulerXShedLock
0 likes · 10 min read
Implement Distributed Scheduled Tasks with Spring Cloud Alibaba SchedulerX