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Loïc Mathieu

@loicmathieu.fr

1K followers 100 following 1.2K posts

Lead Developer @kestra.io, Java & JVM passionate, performance, OSS contributor (mainly Quarkus), Book Author (Quarkus edition ENI), GCP Google Dev Expert. Like to learn stuff and share what I learned. https://www.loicmathieu.fr

www.loicmathieu.fr

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Loïc Mathieu @loicmathieu.fr · Jul 4

What's new in Java 25 for us, developers?
(Both in English and French)
#java #java25

www.loicmathieu.fr/wordpress/in...

Java 25: what’s new? | Loic's Blog

Now that Java 25 is features complete (Rampdown Phase One at the day of writing), it’s time to walk through all the functionalities that bring to us, developers, this new version. This article is part...

www.loicmathieu.fr

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Reposted by Loïc Mathieu

Brice Dutheil @bricedutheil.bsky.social · 7h

Wow, just noticed that Netty 5 will have the Java 25 baseline !

github.com/netty/netty/...
#netty #java #java25

bump netty5 java version requirement to 25 by derklaro · Pull Request #15676 · netty/netty

Motivation: With the addition of MemorySegment into the JDK the Unsafe and ByteBuffer based Buffer implementations are no longer needed. Due to a bug on jdk versions before 25 the nio buffers creat...

github.com

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Loïc Mathieu @loicmathieu.fr · 8h

Les plans ne se déroulent jamais comme prévu ;)

Loïc Mathieu @loicmathieu.fr · 9h

Alors non, ce n'est pas déjà en preview dans Java 23 (tu l'aurais sû car tu lis chacun de mes articles).

Ça fait des années qu'ils en parlent mais ça n'a toujours pas été délivré. Peut être en 26?
Il y a plein de JEP super interéssante en draft ;)

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Loïc Mathieu @loicmathieu.fr · 1d

Yeah!

A lot of work on the engineering team to welcome and help all those new contributors but it's worth it!

So many old issues fixed!
So many small features that we already pushed to the next cycle taking cared on!

Community is a true driver of OpenSource innovation!

Kestra @kestra.io · 1d

🎉 #Hacktoberfest is in full swing, and the excitement around Kestra is incredible!

We’re only 10 days in and the community response has been amazing, so many new contributors, ideas & PRs. 💙

We’ve put together a live session to help you get started
🎥 www.youtube.com/live/gD0SI9H...

Get Started with Hacktoberfest

YouTube video by Kestra

www.youtube.com

Loïc Mathieu @loicmathieu.fr · 1d

I'm curious about the half thing...

Reposted by Loïc Mathieu

Sean Mullan 🏳️‍🌈 @seanjmullan.org · 1d

We plan to backport the quantum-resistant ML-KEM and ML-DSA implementations to Oracle's JDK 21 and 17 releases in the second half of FY26. See www.java.com/en/jre-jdk-c... for more details.

#crypto #jdk #java #pqc #security

www.java.com

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Reposted by Loïc Mathieu

Magazine Programmez! @magazineprogrammez.bsky.social · 2d

Rendez-vous jeudi à partir de 13h30 pour notre conférence informatique et programmatique à 42 Paris merci du soutien de Eviden et de 42
www.programmez.com/page-devcon/...

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Loïc Mathieu @loicmathieu.fr · 1d

C'est fatigant ces changements de package, ça crée du split de code.
Maintenant il va falloir attendre que toutes les lib supportent les deux (ce qui apporte de la complexité dans la framework) puis migrer le code.

Et vu notre base de code ça va être du taff.
Bref, pas avant pas mal de temps...

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Reposted by Loïc Mathieu

Jack Vanlightly @vanlightly.bsky.social · 2d

Why don’t Iceberg or Delta Lake have secondary indexes?
Because analytics workloads and OLTP workloads optimize for opposite I/O patterns.

See my dive into data layout, pruning, and what “indexing” really means in open table formats: jack-vanlightly.com/blog/2025/10...

Beyond Indexes: How Open Table Formats Optimize Query Performance — Jack Vanlightly

My career in data started as a SQL Server performance specialist, which meant I was deep into the nuances of indexes, locking and blocking, execution plan analysis and query design. These days I’m mor...

jack-vanlightly.com

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Reposted by Loïc Mathieu

Kestra @kestra.io · 2d

With Kestra’s AI Copilot, you describe a workflow in plain English and get real declarative code, ready to run, version, and ship.
No black box.
No lock-in.
Just faster orchestration, same control.

Check out this incredible feature: kestra.io/docs/ai-tool...

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Reposted by Loïc Mathieu

Clever Cloud @clever-cloud.com · 3d

[𝗡𝗘𝗪𝗦] Clever Cloud is now listed in the ISG Buyers Guide™ 2025.

Recognized among 24 global providers — incl. OVHcloud, @scaleway.com & IONOS — confirming Clever Cloud's place among the key players of a sovereign, automated & high-performance cloud.

👉 research.isg-one.com/buyers-guide...

Public Cloud Platforms 2025 Buyers Guide Executive Summary

ISG Research evaluates 24 software providers' offerings in the Public Cloud Platforms Buyers Guide.

research.isg-one.com

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Reposted by Loïc Mathieu

Kestra @kestra.io · 4d

AI agents ≠ Chatbots.

They’ve got tools, memory, personas, and brains.

Here’s how they actually work (with Kestra examples).
Full video: youtu.be/YQ8f5dmJ4Bk

AI Agents Explained: The Future of Software is Here!

YouTube video by Kestra

youtu.be

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Reposted by Loïc Mathieu

Julien Briault 🩷💿💜 @jbriault.fr · 4d

Je lance une bouteille à la mer ...

Les @restosducoeur 💞cherchent beaucoup d’ordinateurs portables et tiny (Linux friendly 🐧). Si votre entreprise a du stock dormant ou autre, ça nous aiderait beaucoup !

Repost apprécié :)🫶🏻

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Loïc Mathieu @loicmathieu.fr · 7d

Too messy for a picture!

But I do have no paper, old stuff (my grandma's silver candy box, and old style library lamp), and some computer stuff obviously.

And also early 20th home with woodwork, parquet and stain glasses ;)

Loïc Mathieu @loicmathieu.fr · 7d

Mais dernièrement, avec notre participation au Big Data London + notre com' hacktoberfest c'est la folie!

On en est très content mais ça demande pas mal de boulot quand même.

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Loïc Mathieu @loicmathieu.fr · 7d

On a régulièrement des pics de contrib liés aux différents plans de communication... ou parfois à une école qui choisit notre repo en TP d'open source (ça nous est arrivé plusieurs fois avec des écoles indiennes).

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Reposted by Loïc Mathieu

GraalVM @graalvm.org · 7d

Mandrel 25, a downstream distribution of GraalVM 25, is here!

This release brings a lot of great new features around monitoring, DX, and platform support.

Learn more: quarkus.io/blog/mandrel...

Mandrel 25 is Here!

Quarkus: Supersonic Subatomic Java

quarkus.io

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Loïc Mathieu @loicmathieu.fr · 7d

Moi perso je review beaucoup de PR de contributeur externe et je les aides à faire leurs première PR sur @kestra.io ;)

Passer de contributeur à mainteneur c'est plus de boulot que ce qu'on pourrais penser: aider, expliquer, corriger, vérifier la CI qui est flaky, ... 😜

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Reposted by Loïc Mathieu

Kestra @kestra.io · 8d

What a year for Kestra! 🎉
It deserved a brand-new product overview video.
⚡ 900+ plugins
🤖 AI copilots & workflow builders
🌍 Fastest-growing open-source orchestrator

Build automations as code, from the UI, or with AI!

Give us a star on GitHub: github.com/kestra-io/ke...

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Reposted by Loïc Mathieu

Devoxx France @devoxx.fr · 8d

Devoxx France 2026, notez la date ⮕ la 14ème édition revient du 22 au 24 avril 2026 !

Rejoignez +4 500 professionnels à Paris pour 3 jours d'apprentissage et de sessions innovantes.

Cette année, l’IA sera à l’honneur 🤖

📅 22-24 avril 2026 | 🔗 www.devoxx.fr

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Loïc Mathieu @loicmathieu.fr · 8d

Liqquibase moved to the Functional Source License (FSL), first time I heard about this license, apparently it only prevents third-party commercializing Liquibase in competing ways.

www.liquibase.com/blog/liquiba...

Strengthening Liquibase Community for the Future

Liquibase Community now uses the Functional Source License (FSL). Learn what this means for developers, contributors, and enterprises, and how it protects sustainability.

www.liquibase.com

Reposted by Loïc Mathieu

Kestra @kestra.io · 9d

What’s hot in Data at Europe’s biggest event of the year? 🌍🔥

We were at Big Data London; it was a blast! But it left us with big questions.

From the AI earthquake to the evergreen debates on ETL/ELT, we’ve gathered our key takeaways.

Dive in! kestra.io/blogs/bdl2025

Big Data London 2025: Notes From the Floor

Kestra team attended Big Data LDN 2025 in London to connect with the data community and share best practices.

kestra.io

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Reposted by Loïc Mathieu

Bluesky @bsky.app · 8d

Bluesky runs on open protocols with open source code. Today we’re taking an additional step and making a patent non-aggression pledge to ensure that everyone can build confidently on our work.

Learn more and read the pledge in our blog post: bsky.social/about/blog/1...

Bluesky's Patent Non-Aggression Pledge - Bluesky

Bluesky develops open protocols. We're taking a short and simple patent non-aggression pledge to ensure that everybody feels confident building on them.

bsky.social

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Loïc Mathieu @loicmathieu.fr · 9d

Après, même si le scaling auto c'est cool, il faut toujours faire attention au coût en argent mais aussi en temps de démarrage et ressources utilisées donc c'est pas toujours la meilleure solution et il faut borner.

Maintenant, c'est frustant pour les utilisateurs ;)

Loïc Mathieu @loicmathieu.fr · 9d

Qu'est-ce qui te fait dire que leur système ne peut pas scaller?

Souvent il y a juste des limites (si tu te rappel un système chez qui on a bossé en commun qui a ça pendant les soldes) et pour éviter de scaller trop haut une queue est mise en place.

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