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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.
- Loosely coupled configuration for Home Assistant (2025-07-13)
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This is the 8th post in the My journey with Home Assistant focus series. This post will be short, but I hope useful. My home is getting more and more connected, and the number of my automations grow each month. Recently, I equipped my roller shutters with connected Somfy engines so they could roll down automatically when it’s too hot in summer. Spoiler: given the current heatwave, it’s a boon![…]
- Do You know how to batch? (2025-07-06)
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Concurrent systems face a delicate balance: enabling high throughput under contention while maintaining low latency and predictable behavior. Traditional locking strategies and naive parallelization often introduce performance bottlenecks through cache contention, false sharing, and excessive context switching. These issues are further exacerbated in Cloud and virtualized environments, where performance unpredictability, noisy neighbors, and limited control over physical resources introduce addit[…]
- Broadcast devices' name on the local network (2025-06-29)
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With years, I accumulated devices on my local network, which in general run on Linux. I meticulously added them to my /etc/hosts/ file, so as not to remember their IP. Something puzzled me, though: my Synology NAS was readily available as nas.local on the network, without doing anything. I have close to zero skills in system administration, so here are my findings. The .local domain We can learn more about .local domain from Wikipedia. The domain name .local is a special-use domain name r[…]
- Practical introduction to OpenTelemetry tracing @ Kansas City Developer Conference
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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 @ DeveloperWeek Cloud X
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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 @ GOTO Copenhagen
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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.
