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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 2d

@dddeu.bsky.social just released our brand new talk with @josianchevalier.bsky.social Model Tension Heuristics: Preventing Accidental Design Debt. We will explore what model tensions are, the complications they cause and why they occur.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 2d

These include the spork effect (intrinsic coupling), model fragmentation (extrinsic coupling), and model sclerosis, which ultimately contribute to entropy or the "Big Ball of Mud" phenomenon. These problems arise from undetected and unresolved model tensions.

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 2d

As a result, unsuitable models may be still used for a long time, leading to different issues not always identified as forms of design debt.

Model Tension Heuristics - Julien Topçu & Josian Chevalier - DDD Europe 2025

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 2d

All models are wrong, but some are useful. This insight from George Box has become a cornerstone of software modeling.

While exploration and experimentation are essential for shaping models, it is challenging to know when a model is wrong or when it has become obsolete. 1/5

youtu.be/EZTl9FH5AFQ...

Domain-Driven Design Europe 2025 - Organised by Aardling (https://aardling.eu/)https://dddeurope.comhttps://newsletter.dddeurope.com/ https://be.linkedin.com...

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Reposted by Julien Topçu 🇲🇶🇦🇲

Domain-Driven Design Europe @dddeu.bsky.social · 2d

In this talk, we will explore what model tensions are, the complications they cause and why they occur. We will also present a set of heuristics to identify and address different kind of model tensions.
🎬 youtu.be/EZTl9FH5AFQ

Live Coding The Hive: building a microservices ready modular monolith by Thomas PIERRAIN, Julien To

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

Essentialization law:

Each time a culture/method is cargo culted and/or hyped, people will reduce it to something controllable and palpable which can be showed to others as a foil (tools, jobs named after the method) accelerating the semantic diffusion on this culture/method

Best Example: DevOps

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Reposted by Julien Topçu 🇲🇶🇦🇲

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 5d

This @Devoxx.com 2025 was amazing! I loved presenting "Live Coding The Hive: Building a Microservices-Ready Modular Monolith" with
@tpierrain.bsky.social. We're thrilled by the positive feedback and your enjoyment of the 80's synthwave vibes

Find the links in the next comment👇

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Reposted by Julien Topçu 🇲🇶🇦🇲

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 5d

Check out

the slides: slides.com/julientopcu...
the code repository: gitlab.com/beyondxscra...
and the recording: youtu.be/VKcRNtj0tzc...

After a decade, the industry is realizing that poorly designed microservices can easily transform into a distributed monolith, even more problematic than the...

Live Coding The Hive: building a microservices ready modular monolith by Thomas PIERRAIN, Julien To

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 5d

Check out

the slides: slides.com/julientopcu...
the code repository: gitlab.com/beyondxscra...
and the recording: youtu.be/VKcRNtj0tzc...

After a decade, the industry is realizing that poorly designed microservices can easily transform into a distributed monolith, even more problematic than the...

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

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 5d

This @Devoxx.com 2025 was amazing! I loved presenting "Live Coding The Hive: Building a Microservices-Ready Modular Monolith" with
@tpierrain.bsky.social. We're thrilled by the positive feedback and your enjoyment of the 80's synthwave vibes

Find the links in the next comment👇

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Reposted by Julien Topçu 🇲🇶🇦🇲

Yassine Benabbas @yostane.bsky.social · 5d

@julientopcu.com is back from the future to live code a modular monlith. @devoxx.com

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Reposted by Julien Topçu 🇲🇶🇦🇲

use case driven @tpierrain.bsky.social · 8d

“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 · 9d

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

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

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

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 9d

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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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 · 9d

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 · 9d

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

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 9d

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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BeyondxScratch / hexagonal-architecture-java-springboot · GitLab

Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 9d

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 · 13d

Slides: slides.com/julientopcu...

Code: gitlab.com/beyondxscra...

GitLab.com

gitlab.com

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Julien Topçu 🇲🇶🇦🇲 @julientopcu.com · 13d

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 · 13d

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

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

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

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

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