Nicolas Fränkel articles - 250 total
OpenTelemetry configuration gotchas
Last week, I described several approaches to OpenTelemetry on the JVM, their requirements, and their...
OpenTelemetry Tracing on the JVM
You may know I'm a big fan of OpenTelemetry. I recently finished developing a master class for the...
Git default options
Git has become a fundamental part of our developers' daily routine that it's hard to remember our...
Pattern matching across different languages
Pattern matching is a major feature in software development. While pattern matching applies in...
Loosely coupled configuration for Home Assistant
This post will be short, but I hope it prove to be useful. My home is getting more and more...
Broadcast devices' name on the local network
With years, I accumulated devices on my local network, which in general run on Linux. I meticulously...
Testing an OpenRewrite recipe
For the last two weeks, I've kicked the tires of OpenRewrite. At first, I created a recipe to move...
Improving my previous OpenRewrite recipe
I started discovering OpenRewrite last week by writing a Kotlin recipe that moves Kotlin files...
Authoring an OpenRewrite recipe
I've been eying OpenRewrite for some time, but I haven't had time to play with it yet. In case you...
Runtime-initialized variables in Rust
Rust offers different ways to initialize compile time-initialized variables. Recently, I had to...
Book review: Writing for Developers
Disclaimer: This post includes affiliate links; I may receive compensation if you purchase the book...
Getting a single value from a device's state in Home Assistant
I recently acquired Netatmo smart radiator valves to manage my rooms' temperature remotely. I'm not...
Cloudflare Tunnel for Home Assistant
I continue to take care of my Home Assistant. This week, I replaced my original setup with Cloudflare...
Getting my feet wet with Crossplane
In the early days of IT, we manually configured servers–each one a precious snowflake, lovingly...
LangChain4J musings, six months after
Last year, I started to dig a bit around LangChain4J. It's a fast-growing project, and I wanted to...
The subtle art of waiting
Recently, while working on a workshop titled Testing Your Pull Request on Kubernetes with GKE, and...
High-cardinality values for build flags in Rust
While working on my demo on WebAssembly and Kubernetes, I wanted to create three different binaries...
Even more OpenTelemetry - Kubernetes special
I have presented my OpenTelemetry demo many times, and I still do. Each time, the audience is...
Mutation Testing in Rust
I've been a big fan of Mutation Testing since I discovered PIT. As I dive deeper into Rust, I wanted...
One giant Kubernetes cluster for everything
The ideal size of your Kubernetes clusters is a day 0 question and demands a definite answer. You...
Improving Maven's dependency:analyze... or not
Recently, my good friend Richard Fichtner advised using the mvn dependency:analyze command to get rid...
WebAssembly on Kubernetes
Like a couple of innovative technologies, different people have different viewpoints on where...
Pull request testing on Kubernetes: vCluster for isolation and costs control
This week's post is the third and final in my series about running tests on Kubernetes for each pull...
Pull Request testing on Kubernetes: working with GitHub Actions and GKE
I'm continuing my series on running the test suite for each Pull Request on Kubernetes. In the...
Pull request testing on Kubernetes: testing locally and on GitHub workflows
Imagine an organization with the following practices: Commits code on GitHub Runs its CI/CD...
Remote Development made simple with DevPod
I come relatively late to the subject of Remote Development Environments (also known as Cloud...
On inheritance and subtyping
Java is the first language I learned in my career. Its structure is foundational in my early years of...
My first steps with Playwright
In my previous company, I developed a batch job that tracked metrics across social media, such as...
The Home Assistant companion app
Besides a regular webapp and a Mac app, which uses the same endpoints as the webapp, Home Assistant...
2024 in retrospective
For the first post of 2025, I'm continuing my retrospective series. As last year, before diving in...