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Julien Topçu 🇲🇶🇦🇲

@julientopcu.com

1.3K followers 340 following 530 posts

CTO @shodo.io, @owasp.org member 🐝 - International Keynote Speaker 🎙️- @BeyondxScratch 💻, @CraftsRecords 🎤 & Le Tremplin 🚀 founder.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · Jan 24

🚀 The last two days were such an unbelievable experience, something I was not expecting to happen during my career

I had the honor to be invited to give 2 talks🎙️at the CERN alongside CERN employees and renowned international speakers, during the 2024 millésime of VoxxedCERN

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Reposted by Julien Topçu 🇲🇶🇦🇲

use case driven @tpierrain.bsky.social · 2d

“Doc! The DeLorean’s monolith is overheating!”

“Time to split it across clusters… but first, modularize it — the Hive way!”

Join @julientopcu.com & me this Friday for a live-coding session full of vertical slicing, hexagons & time-travel at @devoxx.com

m.devoxx.com/events/dvbe2...

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

You can also find here the link to the recording of my hexagonal architecture talk: youtu.be/YPmKHm7G19Q...

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Hexagonal Architecture in Practice, Live Coding That Will Make Your Applications More Sustainable by

There always comes a point where software becomes so complex and old that it becomes unmaintainable. Updating the technical stack without breaking everything...

www.youtube.com

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

If you want to learn more about it join us on Friday, the 10th, at 10:40 during Devoxx Belgium m.devoxx.com/events/dvbe...

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Live Coding The Hive: building a microservices-ready modular monolith - Devoxx Belgium 2025

By Julien Topçu, Thomas PIERRAIN. This talk addresses the pitfalls of poorly designed microservices and introduces the modular monolith and Hive architecture style. Hive decouples deployment from software design, enabling flexible, scalable systems. Learn how this “Build once, Deploy as you wish” approach helps manage

m.devoxx.com

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

For Devoxx 2025, we'll be presenting with @tpierrain.bsky.social how to build a microservices-ready modular monolith by composing multiple hexagonal architectures within the same application.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

This advantage brings a powerful ability to create a composable architecture, which facilitates scaling your application.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

Unlike the classic layered architecture, hexagonal architecture offers better encapsulation, ensuring the isolation of business logic from technical concerns. This pattern can further help encapsulate software modules, including technical layers such as the controller and persistence layers.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 3d

Last year, I gave a live coding session at @devoxx.com, demonstrating how to make software more sustainable using hexagonal architecture. I'm thrilled to see that the recording has reached 16k views.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 7d

Slides: slides.com/julientopcu...

Code: gitlab.com/beyondxscra...

BeyondxScratch / hexagonal-architecture-java-springboot · GitLab

GitLab.com

gitlab.com

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 7d

Aujourd'hui c'est la première édition de Nantes Craft!

J'ai eu le plaisir de présenter mon live coding sur l'architecture hexagonale devant une salle pleine !

Merci à toutes et tous d'être venu me voir vous pouvez retrouver mes slides et mon repository en commentaire 👇

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 7d

Pour cette première édition de Nantes Craft, Charles Desneuf nous montre comment Tester du legacy grace à l'Approval testing️

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 8d

On termine cette édition avec Arthur Murillo qui nous parle de bonheur au travail avec 404 - Happiness not found!

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 8d

On reprend avec Crossplane: Déployer vos composants Cloud depuis votre K8S sans drift par Vivien Ramahandry

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 8d

Juste avant la pause, Laure Brosseau nous explique comment passer d’un monde On-Prem à une culture SaaS

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 8d

On enchaine avec Et si on évitait les bugs avant même d'exécuter le code ? par Bruno Voisin, qui va nous parler de Parse, don't validate!

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 8d

Ce soir c'est le tremplin bordelais en partenariat avec CraftsRecords, Agile Tour Bordeaux et @bdxio.bsky.social

Christelle Bordon lance cette nouvelle édition avec sa conférence Leadership Inclusif : Les 5 micro-pratiques pour transformer vos dynamiques d’équipe

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Reposted by Julien Topçu 🇲🇶🇦🇲

JUnit Team 💙💛 @junit.org · 9d

#JUnit 6.0.0 is released!

✨ Java 17 and Kotlin 2.2 baseline
🌄 JSpecify nullability annotations
🛫 Integrated JFR support
🚟 Kotlin suspend function support
🛑 Support for cancelling test execution
⏭️ New `--fail-fast` mode for ConsoleLauncher
🧹 Removal of deprecated APIs

docs.junit.org/6.0.0/releas...

JUnit Release Notes

docs.junit.org

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Reposted by Julien Topçu 🇲🇶🇦🇲

use case driven @tpierrain.bsky.social · 10d

🚨 Lost in Antwerp after a crash at @devoxx.com 2025, our DeLorean’s onboard system is now a blended mess.

Can the #TheHive pattern save us before @julientopcu.com and I get stuck in 2025 forever? ⏳⚡️

👉 Book our LIVE-CODE session: m.devoxx.com/events/dvbe2...

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Reposted by Julien Topçu 🇲🇶🇦🇲

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 15d

Excited to speak at @devoxx.com 2025 in Antwerp with @tpierrain.bsky.social

🎙️ Live coding the Hive: building a microservices ready modular monolith 👇

⭐ Fav the conference page and save our session: m.devoxx.com/events/dvbe...

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 14d

Claude Code => François Pignon code

Same WTF vibe

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 14d

Want to learn how to be assertive while saying shit?

Talk like an LLM!

Reposted by Julien Topçu 🇲🇶🇦🇲

use case driven @tpierrain.bsky.social · 15d

✨ After our 1st talk on the #theHive pattern with @julientopcu.com (building a microservices-ready modular monolith)…

…We’re taking it to the next level: live-coding it at @devoxx.com !

📌 Don’t miss it — add our session to your fav here: m.devoxx.com/events/dvbe2...

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 15d

• A mental model to avoid distributed monoliths before they form
• Practical slicing and contract patterns you can implement on Monday
• Clear criteria for when to extract a service and when to stay modular

m.devoxx.com/events/dvbe...

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 15d

• Define contracts and seams that keep coupling low and autonomy high
• Show how Hive blueprints make extractions to services straightforward when it actually helps
• Share guardrails for brownfield evolution without a big bang rewrite

What you take home: 👇

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 15d

There is a missing layer between strategic modeling and what you deploy. That is where Hive helps.

In this session we will:
• Live code the setup from a spaghetti hexagonal architecture to a working Hive baseline
• Carve vertical slices that turn business responsibilities into clear modules 👇