CI/CD for a Java Shop: Maven/Gradle Caching and JVM Memory
Java CI is heavy on dependencies and memory - cache the build tools and right-size the JVM.
A Java shop runs Maven or Gradle builds that pull large dependency trees and can OOM the JVM. Caching, memory sizing, and cost are the levers.
Cache Maven/Gradle
Cache the local Maven repo or Gradle caches and wrapper so dependency resolution is not repeated every run.
Avoid JVM OOM
Gradle daemon and heavy builds OOM on small runners. Right-size memory; self-healing retries transient OOM.
Parallelize tests
Shard tests across a matrix to keep large JVM suites fast.
Lower per-minute cost
Heavy JVM builds add up. Roughly 69% savings keeps the bill down.
Key takeaways
- Cache Maven/Gradle.
- Right-size memory; self-heal OOM.
- Shard tests; about 69% cheaper.
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