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Nicolas Fränkel

Dev Advocate | Developer & architect | Love learning and passing on what I learned!

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Solutions Engineer

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Rust
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Four Year Club
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Java
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Trusted Member 2022
2 Week Community Wellness Streak
1 Week Community Wellness Streak
A GitHub agentic workflow

A GitHub agentic workflow

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6 min read

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Experimenting with AI subagents

Narrowing scope to avoid agent hallucinations

Experimenting with AI subagents

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4 min read
One tip for successful OpenTelemetry projects

One tip for successful OpenTelemetry projects

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4 min read
The Software Architect Elevator

The Software Architect Elevator

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3 min read
Writing an agent skill

Writing an agent skill

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5 min read
Pi-hole behind Tailscale

Pi-hole behind Tailscale

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6 min read
JVM timing options

JVM timing options

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4 min read
Migrating from Jekyll to Hugo... or not

Migrating from Jekyll to Hugo... or not

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5 min read
Feedback on checked exceptions and lambdas

Feedback on checked exceptions and lambdas

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3 min read
From a JAR to a full-fledged MacOS app

From a JAR to a full-fledged MacOS app

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4 min read
Checked exceptions and lambdas

Checked exceptions and lambdas

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4 min read
From Cloudflare Zero-trust to Tailscale

From Cloudflare Zero-trust to Tailscale

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5 min read
2025 in retrospective

2025 in retrospective

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4 min read
YOW! 2025

YOW! 2025

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4 min read
Yet another Rust ownership tutorial

Yet another Rust ownership tutorial

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4 min read
My second Cloudflare Tunnel

My second Cloudflare Tunnel

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4 min read
My first real Rust project

My first real Rust project

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7 min read
Are you really wasting your time in Java without these 10 libraries?

Are you really wasting your time in Java without these 10 libraries?

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7 min read
XML Schema Validation 1.1 in Java

XML Schema Validation 1.1 in Java

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5 min read
Choosing a dependency

Choosing a dependency

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8 min read
Asciidoc over Markdown

Asciidoc over Markdown

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6 min read
Testing the untestable

Testing the untestable

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2 min read
On dependencies in objects

On dependencies in objects

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4 min read
Transactions and ThreadLocal in Spring

Transactions and ThreadLocal in Spring

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6 min read
Privacy for subdomains: the solution

Privacy for subdomains: the solution

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8 min read
Privacy for subdomains: the problem

Privacy for subdomains: the problem

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5 min read
Comparing transitive dependency version resolution in Rust and Java

Comparing transitive dependency version resolution in Rust and Java

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5 min read
Thoughts on object creation

Thoughts on object creation

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6 min read
GitHub workflows tips and tricks

GitHub workflows tips and tricks

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12 min read
KCDC 2025

KCDC 2025

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6 min read
OpenTelemetry configuration gotchas

OpenTelemetry configuration gotchas

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4 min read
OpenTelemetry Tracing on the JVM

OpenTelemetry Tracing on the JVM

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4 min read
Git default options

Git default options

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3 min read
Pattern matching across different languages

Pattern matching across different languages

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6 min read
Loosely coupled configuration for Home Assistant

Loosely coupled configuration for Home Assistant

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3 min read
Broadcast devices' name on the local network

Broadcast devices' name on the local network

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4 min read
Testing an OpenRewrite recipe

Testing an OpenRewrite recipe

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5 min read
Improving my previous OpenRewrite recipe

Improving my previous OpenRewrite recipe

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6 min read
Authoring an OpenRewrite recipe

Authoring an OpenRewrite recipe

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5 min read
Runtime-initialized variables in Rust

Runtime-initialized variables in Rust

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4 min read
Book review: Writing for Developers

Book review: Writing for Developers

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3 min read
Getting a single value from a device's state in Home Assistant

Getting a single value from a device's state in Home Assistant

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2 min read
Cloudflare Tunnel for Home Assistant

Cloudflare Tunnel for Home Assistant

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6 min read
Getting my feet wet with Crossplane

Getting my feet wet with Crossplane

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6 min read
LangChain4J musings, six months after

LangChain4J musings, six months after

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8 min read
The subtle art of waiting

The subtle art of waiting

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5 min read
High-cardinality values for build flags in Rust

High-cardinality values for build flags in Rust

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3 min read
Even more OpenTelemetry - Kubernetes special

Even more OpenTelemetry - Kubernetes special

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7 min read
Mutation Testing in Rust

Mutation Testing in Rust

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3 min read
One giant Kubernetes cluster for everything

One giant Kubernetes cluster for everything

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8 min read
Improving Maven's dependency:analyze... or not

Improving Maven's dependency:analyze... or not

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5 min read
WebAssembly on Kubernetes

WebAssembly on Kubernetes

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13 min read
Pull request testing on Kubernetes: vCluster for isolation and costs control

Pull request testing on Kubernetes: vCluster for isolation and costs control

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6 min read
Pull Request testing on Kubernetes: working with GitHub Actions and GKE

Pull Request testing on Kubernetes: working with GitHub Actions and GKE

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14 min read
Pull request testing on Kubernetes: testing locally and on GitHub workflows

Pull request testing on Kubernetes: testing locally and on GitHub workflows

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10 min read
Remote Development made simple with DevPod

Remote Development made simple with DevPod

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5 min read
On inheritance and subtyping

On inheritance and subtyping

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4 min read
My first steps with Playwright

My first steps with Playwright

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4 min read
The Home Assistant companion app

The Home Assistant companion app

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3 min read
2024 in retrospective

2024 in retrospective

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6 min read
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