Nicolas Fränkel
A Java Geek

A Java Geek

Nicolas Fränkel

20 followers

🥑 Developer Advocate @Hazelcast ✍️ Blogger at http://blog.frankel.ch 🎓 Learner 📖 Author of https://leanpub.com/integrationtest

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You're running untrusted code!

Jan 16, 20227 min read

Last December, Log4Shell shortened the nights of many people in the JVM world. Worse, using the earthquake analogy caused many aftershocks after the initial quake. I immediately made the connection between Log4Shell and the Security Manager. At first...

You're running untrusted code!

A tentative comparison of fault tolerance libraries on the JVM

Jan 9, 20225 min read

If you're implementing microservices or not, the chances are that you're calling HTTP endpoints. With HTTP calls, a lot of things can go wrong. Experienced developers plan for this and design beyond just the happy path. In general, fault tolerance en...

A tentative comparison of fault tolerance libraries on the JVM

Beautify third-party API with Kotlin

Dec 19, 20214 min read

Scala has popularized the "Pimp my library" pattern: This is just a fancy expression to refer to the ability to supplement a library using implicit conversions. -- Pimp My Library Pattern in Scala Kotlin does provide the same capability. However, i...

Beautify third-party API with Kotlin

Native-image with Quarkus

Dec 12, 20219 min read

So far, we have looked at how well Spring Boot and Micronaut integrate GraalVM native image extension. In this post, I'll focus on Quarkus: A Kubernetes Native Java stack tailored for OpenJDK HotSpot and GraalVM, crafted from the best of breed Java ...

Native-image with Quarkus

Multiple Spring Boot applications in the same project

Dec 5, 20214 min read

I frequently use the Spring Boot framework in my demos. The latest one is no different. It shows how to achieve CQRS using two different code paths: the command part is implemented via Spring Data JPA the query part via jOOQ My use case is a bankin...

Multiple Spring Boot applications in the same project

Port management in your local Kubernetes cluster

Nov 28, 20212 min read

Most of my talks contain a demo. A fair share of these demos require multiple "infrastructure" dependencies: a database (or more), Elasticsearch, you name it. To ease my setup and avoid stuffing my machine, I use either Docker Compose or Kubernetes l...

Port management in your local Kubernetes cluster