programming

04 Sep 2026

DZone Java Zone

Why I Don't Want an LLM Generating Java Business Logic

A pull request arrives. A few hundred lines of Java implementing the new discount rule: tiered thresholds, a regional exception, something about loyalty tiers that nobody can quite explain. It compiles. The tests pass. An LLM wrote it in about forty seconds.

Now: who reviews it?

04 Sep 2026 2:00pm GMT

03 Sep 2026

DZone Java Zone

The Startup Time Trick Hiding Inside Your Docker Build

Every Java developer who runs services on Kubernetes has watched this scene play out. Traffic spikes, the autoscaler adds a pod, and then everyone waits. The container is running in two seconds. The application is not ready for another twelve seconds. During those ten seconds, your existing pods absorb the extra load, latency climbs, and if things are bad enough, the autoscaler panics and adds even more pods that are also not ready.

I spent years treating Spring Boot startup time as a fact of life, the way you treat weather. Then I found out the JVM has had a fix for a big chunk of it since Java 12; it works beautifully inside Docker, and almost nobody bakes it into their images. It is called Class Data Sharing, CDS for short, and this article shows you how to make your Docker build do the work

03 Sep 2026 6:00pm GMT

The Bottleneck of Scaling

Any input/output operation, be it accessing a file, handling an HTTP request, or a database connection, is based on 3 fundamental system concepts - file descriptors, kernel memory, and heap size.

This article discusses how modern languages help developers handle behind-the-scenes file descriptor, kernel memory, and heap management. These three concepts are major bottlenecks for scaling.

03 Sep 2026 4:00pm GMT