Last week, I was debugging a strange issue in my Spring Boot application.Everything worked fine locally… but suddenly started breaking in production. After hours of digging, the culprit wasn’t my code. It was a transitive dependency. What is a Transitive Dependency? In a Maven-based Spring Boot project, you add a dependency like this: <dependency> <groupId>org.springframework.boot </groupId> <artifactId>spring-boot-starter-web </artifactId> </dependency> Looks simple, right? But behind the scenes, this pulls in many other dependencies automatically (like Jackson, Tomcat, etc.). These indirect dependencies are called transitive dependencies. The Problem: In my case, two different libraries were pulling different versions of the same dependency. Result? 1. Runtime conflicts 2. Unexpected errors 3. Debugging nightmare How I Fixed It: Step 1: Identify the dependency tree mvn dependency:tree Step 2: Find conflicting versions Step 3: Exclude unwanted dependency <dependency> <artifactId>koi</artifactId> <exclusions> <exclusion> <groupId>congflict</groupId> <artifactId>conflicting.any</groupId> </exclusion> </exclusions> <dependency> Step 4: Add the correct version explicitly Use: 1. mvn dependency:tree 2. mvn dependency:analyze These commands can save hours of debugging. Key Takeaway: Transitive dependencies are powerful…but if ignored, they can silently break your application. Always know what comes along with what you import. #Java #SpringBoot #Maven #BackendDevelopment #Debugging #SoftwareEngine
Thanks for sharing the bug and the resolution... But how was it not causing an issue in Dev?
Thanks for sharing
Totally relatable, faced something very similar once. In one of my projects a small transitive upgrade in Jackson actually broke serialization, but only in production… locally everything was fine which made it even more confusing. Since then I kind of stopped blindly trusting transitive deps. I usually lock important ones explicitly now, specially for logging, JSON and HTTP clients.