Mike Kowalski

I've just published a small library that allows you to write #JUnit5 parameterized tests in a human-readable way. Just provide a format and use it to define your test cases 👇 github.com/mikemybytes/ju…

#Java + #Kubernetes quirk: if you remove CPU limits to avoid throttling, the #JVM may suddenly think it can use all CPUs on the node, which can mean dozens of extra threads (GC, JIT, ForkJoinPool...) 🤯 Luckily, there’s a way to address that 👇 mikemybytes.com/2026/03/12/kub…

My 'Awesome lost & found' collection is back! In this release: Java memory growth that isn’t a leak, how bytecode actually runs, and why growing organizations lose cost visibility 👇 github.com/mikemybytes/aw…

Put on your comfy shoes, because we're walking through some of the many notable performance improvements and features in JDK 25. 🚶 social.ora.cl/6011A7thd

@chicagokarl Thanks, Karl! Yes, it’s much better now!

@mikemybytes I hope you're doing better.

Great engineers, just like great doctors, keep asking “why?” mikemybytes.com/2025/12/10/gre…

github.com/apple/containe… This is interesting! Not only for containers, it also allows spawning lightweight virtual machines 👀 And it being OSS adds to the news 🔥

We are working on a new big project for @GraalVM — Project Crema: github.com/oracle/graal/i…. It will lift Native Image's default closed-world assumption by allowing dynamic loading and execution of classes at run time. Stay tuned for updates!

Apache Kafka @apachekafka 4.0 says goodbye to ZooKeeper! Take a look at what other important changes it brings. softwaremill.com/apache-kafka-4…

Excellent ZGC deep dive 🤿

Testcontainers is one of a few technologies that have truly revolutionised the way I work. Thank you and happy birthday!

📢 New post: #Java 24 - Thread pinning revisited I don't remember being so excited about some of my past articles becoming obsolete! mikemybytes.com/2025/04/09/jav…

Prescription without diagnosis is malpractice. It applies to medicine, coaching, and software architecture 🧑‍⚕️

@juanantoniobm Thanks for sharing! BTW there’s a related blog post too! mikemybytes.com/2024/04/17/con…

Java thread pinning detection using JFR Event Streaming with Spring Boot github.com/mikemybytes/jf… @mikemybytes

"Immutability makes code more reasonable" 💯

Making a bigger impact without working more? Last year, I discovered that it's not only possible but also effective. It was a year of scaling myself. mikemybytes.com/2025/02/05/a-y…

We're coming towards the end of #AWSreinvent 2024 and we've seen an impressive set of releases, so here is my top 10 announcements I find most impactful for this years #AWS re:Invent.

I can’t remember the last time I was so excited about one of my articles becoming obsolete! mikemybytes.com/2024/02/28/cur…

🥳 JEP proposed to target JDK 24: 450: Compact Object Headers (Experimental) 🎉 mail.openjdk.org/pipermail/jdk-…

My open source library - @springboot & @wiremock integration has been adopted by WireMock and is now THE official integration for these two projects: github.com/wiremock/wirem…