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Nicolas Fränkel is a technologist focusing on cloud-native technologies, DevOps, CI/CD pipelines, and system observability. His focus revolves around creating technical content, delivering talks, and engaging with developer communities to promote the adoption of modern software practices. With a strong background in software, he has worked extensively with the JVM, applying his expertise across various industries. In addition to his technical work, he is the author of several books and regularly shares insights through his blog and open-source contributions.
- My first steps with Playwright (2025-01-19)
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In my previous company, I developed a batch job that tracked metrics across social media, such as Twitter, LinkedIn, Mastodon, Bluesky, Reddit, etc. Then I realized I could duplicate it for my own 'persona'. The problem is that some media don’t provide an HTTP API for the metrics I want. Here are the metrics I want on LinkedIn: I searched for a long time but found no API access for the metrics above. I scraped the metrics manually every morning for a long time and finally decided to au[…]
- The Home Assistant companion app (2025-01-12)
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Besides a regular webapp and a Mac app, which uses the same endpoints as the webapp, Home Assistant also provides mobile apps. In this post, I want to describe its advantages over the former. I’ll use iOS to do this: Samsung’s French partner to recycle used mobiles tricked me once, and I moved away from Samsung. I decided to buy Apple for better integration since I’ve had Mac computers for the last few years. Installing and configuring The companion app is readily available […]
- 2024 in retrospective (2025-01-05)
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For the first post of 2025, I’m continuing my retrospective series. As last year, before diving in into the report proper, I’d like to remind you that Ukraine is still fighting for its survival after nearly 3 years and countless Russian war crimes. The civilized world can’t allow rewarding the invasion of a sovereign country, lest we see more invasions. Remember that in 1938, in Munich, European 'leaders' acknowledged Hitler’s annexation of Czechoslovakia’s Sudeten[…]
- Practical introduction to OpenTelemetry tracing @ Belgian Java User Group
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Tracking a request’s flow across different components in distributed systems is essential. With the rise of microservices, their importance has risen to critical levels. Some proprietary tools for tracking have been used already: Jaeger and Zipkin naturally come to mind. Observability is built on three pillars: logging, metrics, and tracing. OpenTelemetry is a joint effort to bring an open standard to them. Jaeger and Zipkin joined the effort so that they are now OpenTelemetry compatible. In this talk, I’ll describe the above in more detail and showcase a (simple) use case to demo how you could benefit from OpenTelemetry in your distributed architecture.
- Practical introduction to OpenTelemetry tracing @ rheinJUG - Java User Group Düsseldorf
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Tracking a request’s flow across different components in distributed systems is essential. With the rise of microservices, their importance has risen to critical levels. Some proprietary tools for tracking have been used already: Jaeger and Zipkin naturally come to mind. Observability is built on three pillars: logging, metrics, and tracing. OpenTelemetry is a joint effort to bring an open standard to them. Jaeger and Zipkin joined the effort so that they are now OpenTelemetry compatible. In this talk, I’ll describe the above in more detail and showcase a (simple) use case to demo how you could benefit from OpenTelemetry in your distributed architecture.
- WebAssembly on Kubernetes @ JCON
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WebAssembly started as a technology tailored to web browsers and is becoming popular as a server-side technology as well. The next step is for Wasm to become a powerful tool for cloud-native applications. When combined with Kubernetes, WebAssembly can revolutionize application deployment, security, and resource efficiency in ways traditional containers cannot. This talk explores why and how to leverage WebAssembly within Kubernetes environments to create scalable, high-performance, and secure applications.
