A ruthless battle occurs every day on the World Wide Web. Its goal is to decide which programming flavor is the best: OOP or FP? I assume that imperative and procedural programming are not part of the contenders. Arguments range from the factual to the irrelevant to the utterly stupid. A couple of years ago, I wanted to listen to …

In one of my recent blog posts, I described several ways to access Kubernetes pods. One can access a pod through its IP, but pods are naturally transient. The nominal way is to configure a Service: its IP is stable, and Kubernetes’ job is to keep the mapping between a Service and its underlying pods up-to-date. Different kinds of services …

We have a shared amnesia. When I speak to younger developers about past technologies, I often get blank stares. To be fair, some of that is because I’m a bit “intense” or “weird” but some of that is because. Huh? Really? Did we have that? Case in point XA transactions and 2PC (Two Phase Commit). We have a young generation …

This is the second in a series of posts examining patterns for using K8ssandra to create Cassandra clusters with different deployment topologies. In the first article in this series, we looked at how you could create a Cassandra cluster with two datacenters in a single cloud region, using separate Kubernetes namespaces in order to isolate workloads. For example, you might want to …

Creating and running an application in your favorite language is usually pretty simple. After you create your application, deploying it and showing it to the world is also quite straightforward. The last thing you need is someone to take over your system and fully control your brand new application. In this article, I’ll explain how this can happen with a …

Frontmania Conference 2022 is coming in less than a month at Jaarbeurs Utrecht on the 5th of October! The line-up has been released and these awesome speakers will take you on a deep dive in the world of frontend. It’s the frontend Conference of the year, you can’t miss out on. With the best of the best international and national frontend speakers bringing …

The concept of pattern matching has been around since the 1960s. It’s a well-known language technique used in many programming languages, from Haskell and AWK to Rust and Scala. Pattern matching is relatively new to Java. It was introduced in JDK 14 and has been progressing with new uses since then. This article explores how these new features can make …

Let’s take an introductory run-through of setting up your database on OpenShift, using your own hardware and RedHat’s CodeReady Containers. CodeReady Containers is a great way to run OpenShift K8s locally, ideal for development and testing. The steps in this blog post will require a machine, laptop or desktop, of decent capability; preferably quad CPUs and 16GB+ RAM. Download and …

Last year, I spoke at the National DevOps Conference that took place at the British Museum. I had already visited the museum before, but speaking there was a fantastic experience. Besides, we had the museum all for ourselves for a couple of hours. If you’ve ever visited the place, you know what I mean. Anyway, I also attended a talk …

There have been amazing articles on the subjects of migrating from a monolith to a microservice architecture, e.g., this is probably one of the better examples. The benefits and drawbacks of the architectures should be pretty clear. I want to talk about something else though: the strategy. We build monoliths since they are easier to get started with. Microservices usually …