Uploaded April 2026 | Updated September 2026, 2 weeks ago
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Let’s abuse the tools! Everyone knows Quarkus is computationally efficient, expressive, and rock-solid for production. But did you know that we can use Quarkus efficiency to build applications that shouldn’t go anywhere near production? In this demo-driven session, Holly will put the joy into “developer joy”. She’ll show you all sorts of things you can do with Quarkus that you probably shouldn’t:
Build an LLM-powered app that’s guaranteed to hallucinate, because you can do more than you think with guardrails, and truth is so boring
Write your business code in rockstarlang, because everything should be a hair metal ballad
Use Minecraft as your observability client, because the LGTM stack doesn’t have enough explosions
Write a CLI for generating memes faster, because everything is better on the command-line
Benchmark an application against a grapefruit, because metric units aren’t tasty
Business value? Learning? If you insist. As well as absurd demos, you’ll leave this session with a deeper understanding of how to get the most out of Quarkus and Java. There will be new Java 25 language features, Quarkus best practices, powerful integrations, and nifty use cases alongside the silly explosions and grapefruit.
Please subscribe to our YouTube channel @ youtube.com/@DevoxxForever
Subscribe to LinkedIn @ linkedin.com/company/voxxed-days-amsterdam
Follow us on Twitter @ twitter.com/voxxedamsterdam
Let’s abuse the tools! Everyone knows Quarkus is computationally efficient, expressive, and rock-solid for production. But did you know that we can use Quarkus efficiency to build applications that shouldn’t go anywhere near production? In this demo-driven session, Holly will put the joy into “developer joy”. She’ll show you all sorts of things you can do with Quarkus that you probably shouldn’t:
Build an LLM-powered app that’s guaranteed to hallucinate, because you can do more than you think with guardrails, and truth is so boring
Write your business code in rockstarlang, because everything should be a hair metal ballad
Use Minecraft as your observability client, because the LGTM stack doesn’t have enough explosions
Write a CLI for generating memes faster, because everything is better on the command-line
Benchmark an application against a grapefruit, because metric units aren’t tasty
Business value? Learning? If you insist. As well as absurd demos, you’ll leave this session with a deeper understanding of how to get the most out of Quarkus and Java. There will be new Java 25 language features, Quarkus best practices, powerful integrations, and nifty use cases alongside the silly explosions and grapefruit.
![[VDBUH2026] Julien Topçu - Hexagonal Architecture in Practice](https://i.ytimg.com/vi/QZrl5tghsTA/mqdefault.jpg "[VDBUH2026] Julien Topçu - Hexagonal Architecture in Practice
There always comes a point where software becomes so complex and old that it becomes unmaintainable. Updating the technical stack without breaking everything becomes impossible, implementing new features takes longer, and the technical debt is so overwhelming that refactoring becomes exorbitant.
What if we told you that all of this is more of a practice problem than a software aging problem?
Come and discover through hands-on experience in this 100% live coding session how Hexagonal Architecture can tackle software complexity, making it possible for you to be adaptable and sustainable while helping you manage your technical debt more effectively.")
