programming

06 Nov 2025

DZone Java Zone

The JVM Pause That Wasn't: A War Story

In high-performance computing, we are trained to hunt for bottlenecks in our code, our algorithms, or our infrastructure. But my favorite bug was not in any of those. It was an invisible interaction between the JVM's garbage collector and the server's disk, resulting in 15+ second, stop-the-world (STW) pauses on a service handling millions of requests per second.

The Mystery: The 503 Spikes

I was working on a large-scale Java service handling millions of user requests per second. The system was designed for extreme throughput, but we were plagued by intermittent spikes in load balancer timeouts, causing 503 responses to be returned to the users.

06 Nov 2025 1:00pm GMT

05 Nov 2025

DZone Java Zone

JPlus: A Modern Java Superset Language

JPlus is a Java superset language running on the JVM that enhances developer productivity while staying fully compatible with the Java ecosystem.

Why Support JPlus?

JPlus fills a unique gap in the Java ecosystem:

05 Nov 2025 6:00pm GMT

04 Nov 2025

DZone Java Zone

Top Takeaways From Devoxx Belgium 2025

In October 2025, I visited Devoxx Belgium, and again it was an awesome event! I learned a lot and received quite a lot of information, which I do not want to withhold from you. In this blog, you can find my takeaways of Devoxx Belgium 2025!

Introduction

Devoxx Belgium is the largest Java conference in Europe. This year, it was already the 22nd edition. As always, Devoxx is being held in the fantastic theatres of Kinepolis Antwerp. Each year, there is a rush on the tickets. Tickets are released in several batches, so if you could not get a ticket during the first batch, you will get another chance.

04 Nov 2025 1:00pm GMT