Arnaud Héritier
@aheritier.net
Senior Engineering Manager at Doctolib in charge of engineering enablement (Platform engineering, internal developers platform, CI, CD, …) #lescastcodeurs #devoxxfr #devops #oss #jenkinsci #maven #asf
Reposted by Arnaud Héritier
JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open!
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Support JUnit
JUnit is maintained by a team of passionate volunteers. This is your chance to give back and support the project!
steady.page
November 26, 2025 at 11:29 AM
JUnit is undoubtedly one of the most important projects in the #Java ecosystem. And it's 100% free and open!
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Let me be frank: If we can't get THIS project to the point where a single maintainer can focus on it, then what does that say about our commitment to Free & Open Source Software?
1/3 ⏩
Reposted by Arnaud Héritier
The engineer-manager pendulum model no longer accurately reflects how engineering leadership operates.
Most of us aren’t just an IC or a manager. Technology has forced us to live somewhere in the middle.
I wrote about what this actually looks like now:
www.modernleader.is/p/pendulum-r...
Most of us aren’t just an IC or a manager. Technology has forced us to live somewhere in the middle.
I wrote about what this actually looks like now:
www.modernleader.is/p/pendulum-r...
The engineer–manager pendulum is breaking
The hybrid era of engineering leadership is here, and the traditional IC/manager model is no longer suitable.
www.modernleader.is
November 25, 2025 at 3:01 PM
The engineer-manager pendulum model no longer accurately reflects how engineering leadership operates.
Most of us aren’t just an IC or a manager. Technology has forced us to live somewhere in the middle.
I wrote about what this actually looks like now:
www.modernleader.is/p/pendulum-r...
Most of us aren’t just an IC or a manager. Technology has forced us to live somewhere in the middle.
I wrote about what this actually looks like now:
www.modernleader.is/p/pendulum-r...
Reposted by Arnaud Héritier
L'IA ne remplacera pas votre autocomplétion (et c'est tant mieux).
Mon retour d'XP après plusieurs mois d'utilisation quotidienne en SRE : où l'IA excelle vraiment vs où c'est juste du hype.
Et oui, je suis de retour !
www.damyr.fr/posts/ia-ne-...
Mon retour d'XP après plusieurs mois d'utilisation quotidienne en SRE : où l'IA excelle vraiment vs où c'est juste du hype.
Et oui, je suis de retour !
www.damyr.fr/posts/ia-ne-...
www.damyr.fr
November 26, 2025 at 8:06 AM
L'IA ne remplacera pas votre autocomplétion (et c'est tant mieux).
Mon retour d'XP après plusieurs mois d'utilisation quotidienne en SRE : où l'IA excelle vraiment vs où c'est juste du hype.
Et oui, je suis de retour !
www.damyr.fr/posts/ia-ne-...
Mon retour d'XP après plusieurs mois d'utilisation quotidienne en SRE : où l'IA excelle vraiment vs où c'est juste du hype.
Et oui, je suis de retour !
www.damyr.fr/posts/ia-ne-...
Reposted by Arnaud Héritier
Let's go! Our call for paper is now open until January 11th.
Join us and share your passion on devoxxfr2026.cfp.dev#/
For more details: www.devoxx.fr/2025/11/21/c...
Join us and share your passion on devoxxfr2026.cfp.dev#/
For more details: www.devoxx.fr/2025/11/21/c...
Call For Papers
The Call for Papers web app which allows authenticated users to submit talks and the program committee to review and rate them.
devoxxfr2026.cfp.dev
November 24, 2025 at 6:50 AM
Let's go! Our call for paper is now open until January 11th.
Join us and share your passion on devoxxfr2026.cfp.dev#/
For more details: www.devoxx.fr/2025/11/21/c...
Join us and share your passion on devoxxfr2026.cfp.dev#/
For more details: www.devoxx.fr/2025/11/21/c...
Reposted by Arnaud Héritier
ASF projects power scientific research, public dashboards, data engineering, and more.
Your support makes it possible.
Join us this #GivingTuesday: buff.ly/vymscvZ
#GivingTuesday #OpenSource #CommunityOverCode
Your support makes it possible.
Join us this #GivingTuesday: buff.ly/vymscvZ
#GivingTuesday #OpenSource #CommunityOverCode
November 22, 2025 at 8:01 PM
ASF projects power scientific research, public dashboards, data engineering, and more.
Your support makes it possible.
Join us this #GivingTuesday: buff.ly/vymscvZ
#GivingTuesday #OpenSource #CommunityOverCode
Your support makes it possible.
Join us this #GivingTuesday: buff.ly/vymscvZ
#GivingTuesday #OpenSource #CommunityOverCode
Reposted by Arnaud Héritier
Someone told me my posts “sound like AI.”
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
November 22, 2025 at 7:15 AM
Someone told me my posts “sound like AI.”
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
So I built an AI detector in Java with Quarkus + LangChain4j.
It turns out detection is harder — and more fascinating — than you’d think.
Read the full breakdown ↓
buff.ly/Qm1KYIB
#Java #AI #Quarkus #LangChain4j
Reposted by Arnaud Héritier
🥁📢 #SpringModulith 2.0 is here! Revamped event publication registry, module-specific database migrations, runtime improvements, #jSpecify support, and upgrades to Spring Boot 4 / Framework 7. Grab it while it's 🔥! 🍃📦
Spring Modulith 2.0 GA, 1.4.5, and 1.3.11 released
Level up your Java code and explore what Spring can do for you.
spring.io
November 21, 2025 at 5:32 PM
🥁📢 #SpringModulith 2.0 is here! Revamped event publication registry, module-specific database migrations, runtime improvements, #jSpecify support, and upgrades to Spring Boot 4 / Framework 7. Grab it while it's 🔥! 🍃📦
I have a doubt between Struts and Ant #asfnewleaf
What was the first Apache project you discovered?
Answer with #ASFNewLeaf for a chance to win ASF swag.
Learn more about our social giveaway → buff.ly/ET6cl0b #opensource
Answer with #ASFNewLeaf for a chance to win ASF swag.
Learn more about our social giveaway → buff.ly/ET6cl0b #opensource
November 21, 2025 at 6:35 PM
I have a doubt between Struts and Ant #asfnewleaf
Spring Boot 4.0.0 is out spring.io/blog/2025/11... Congrats team!
Spring Boot 4.0.0 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 20, 2025 at 9:40 PM
Spring Boot 4.0.0 is out spring.io/blog/2025/11... Congrats team!
Reposted by Arnaud Héritier
Spring Boot 3.4.12 available now
Level up your Java code and explore what Spring can do for you.
spring.io
November 20, 2025 at 2:11 PM
Reposted by Arnaud Héritier
Spring Framework 7.0.1 Available Now
Level up your Java code and explore what Spring can do for you.
spring.io
November 20, 2025 at 2:15 PM
Reposted by Arnaud Héritier
IntelliJ IDEA 2025.3 Beta has been published, it provides first class support for JSpecify nullability annotations that are used in Spring Boot 4.0 which will be released today. www.jetbrains.com/idea/nextver...
#java #spring
#java #spring
Early Access Program (EAP) - IntelliJ IDEA
Code-centric IDE, focused on your productivity. Full Java EE support, deep code understanding, best debugger, refactorings, everything right out of the box...
www.jetbrains.com
November 20, 2025 at 4:16 PM
IntelliJ IDEA 2025.3 Beta has been published, it provides first class support for JSpecify nullability annotations that are used in Spring Boot 4.0 which will be released today. www.jetbrains.com/idea/nextver...
#java #spring
#java #spring
Reposted by Arnaud Héritier
And my mother fall again while walking the dog …. 6h in ER …
November 18, 2025 at 1:17 AM
And my mother fall again while walking the dog …. 6h in ER …
Reposted by Arnaud Héritier
⏰ Plus que 10 jours avant l'ouverture du CFP Devoxx 2026 !
Hier : visio du comité de sélection ✅
On est à FOND pour vous préparer une édition 2026 de folie ! 🔥
🎟️ Places dispo : reg.devoxx.fr
Prêts à soumettre vos talks ?
Hier : visio du comité de sélection ✅
On est à FOND pour vous préparer une édition 2026 de folie ! 🔥
🎟️ Places dispo : reg.devoxx.fr
Prêts à soumettre vos talks ?
November 14, 2025 at 3:56 PM
⏰ Plus que 10 jours avant l'ouverture du CFP Devoxx 2026 !
Hier : visio du comité de sélection ✅
On est à FOND pour vous préparer une édition 2026 de folie ! 🔥
🎟️ Places dispo : reg.devoxx.fr
Prêts à soumettre vos talks ?
Hier : visio du comité de sélection ✅
On est à FOND pour vous préparer une édition 2026 de folie ! 🔥
🎟️ Places dispo : reg.devoxx.fr
Prêts à soumettre vos talks ?
Reposted by Arnaud Héritier
We are delighted to announce the new Reactor 2025.0.0 🎉 This release comes with enhanced Null Safety support using JSpecify and is based on Netty 4.2 with production-ready support for HTTP/3, QUIC, and IOUring 🚀 github.com/reactor/reac...
Release 2025.0.0 · reactor/reactor
2025.0.0 release train is made of:
reactor-core 3.8.0
reactor-addons 3.6.0
reactor-pool 1.2.0
reactor-netty 1.3.0
reactor-kotlin-extensions 1.3.0
Artifacts no longer included in the release train...
github.com
November 12, 2025 at 11:40 AM
We are delighted to announce the new Reactor 2025.0.0 🎉 This release comes with enhanced Null Safety support using JSpecify and is based on Netty 4.2 with production-ready support for HTTP/3, QUIC, and IOUring 🚀 github.com/reactor/reac...
Reposted by Arnaud Héritier
I so fun working on cagent, Docker's agent builder (github.com/docker/cagent)
It's so rewarding to be able to quickly try ideas, without writing code. While keeping a lot of flexibility and power.
It's so rewarding to be able to quickly try ideas, without writing code. While keeping a lot of flexibility and power.
GitHub - docker/cagent: Agent Builder and Runtime by Docker Engineering
Agent Builder and Runtime by Docker Engineering. Contribute to docker/cagent development by creating an account on GitHub.
github.com
November 14, 2025 at 10:30 AM
I so fun working on cagent, Docker's agent builder (github.com/docker/cagent)
It's so rewarding to be able to quickly try ideas, without writing code. While keeping a lot of flexibility and power.
It's so rewarding to be able to quickly try ideas, without writing code. While keeping a lot of flexibility and power.
Reposted by Arnaud Héritier
ah les liens sont mangés www.youtube.com/watch?v=DEPp... ou www.youtube.com/@lescastcode...
LCC 332 - LIVE - Groquik revient, Emmanuel s'en va
YouTube video by lescastcodeurs
www.youtube.com
November 14, 2025 at 10:55 AM
ah les liens sont mangés www.youtube.com/watch?v=DEPp... ou www.youtube.com/@lescastcode...
Reposted by Arnaud Héritier
Un épisode des cast codeurs en direct à 14h aujourd'hui https://www.youtube.com/watch\?v\=DEPpnEV2-0E ou sur https://www.youtube.com/@lescastcodeurs si on se plante
November 14, 2025 at 10:52 AM
Un épisode des cast codeurs en direct à 14h aujourd'hui https://www.youtube.com/watch\?v\=DEPpnEV2-0E ou sur https://www.youtube.com/@lescastcodeurs si on se plante
Reposted by Arnaud Héritier
Spring Framework 7.0 is now GA!
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Spring Framework 7.0 General Availability
Level up your Java code and explore what Spring can do for you.
spring.io
November 13, 2025 at 11:05 PM
Spring Framework 7.0 is now GA!
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Including Java 25 (with Java 17 baseline), Jakarta EE 11, JSpecify null-safety, Jackson 3.0, Kotlin 2.2, JUnit 6.0, plus programmatic bean registration, JmsClient, API versioning, HTTP Interface Client, RestTestClient & more: spring.io/blog/2025/11...
Let’s go for @devoxx.fr 2026 CFP team.
November 13, 2025 at 9:36 PM
Let’s go for @devoxx.fr 2026 CFP team.
Reposted by Arnaud Héritier
🎟️ Et c’est reparti ! Après la vente des pass 3 jours, les 3 formules sont maintenant en vente (pass 1 jour, 2 jours et 3 jours)
Réservez votre billet → reg.devoxx.fr
📅 22-24 avril 2026 | 📍 Paris
Réservez votre billet → reg.devoxx.fr
📅 22-24 avril 2026 | 📍 Paris
November 13, 2025 at 9:00 AM
🎟️ Et c’est reparti ! Après la vente des pass 3 jours, les 3 formules sont maintenant en vente (pass 1 jour, 2 jours et 3 jours)
Réservez votre billet → reg.devoxx.fr
📅 22-24 avril 2026 | 📍 Paris
Réservez votre billet → reg.devoxx.fr
📅 22-24 avril 2026 | 📍 Paris
Reposted by Arnaud Héritier
One of the tools that really made a difference for me as a software engineer in the past few years is @openrewrite.github.io. Kudos to the team and special thanks to @timtebeek.github.io for introducing me to it and providing guidance for using it and working with it effectively 🙏🏻 /1
November 12, 2025 at 8:25 PM
One of the tools that really made a difference for me as a software engineer in the past few years is @openrewrite.github.io. Kudos to the team and special thanks to @timtebeek.github.io for introducing me to it and providing guidance for using it and working with it effectively 🙏🏻 /1
Reposted by Arnaud Héritier
⏰ Rappel ⏰ : la billetterie pour les pass 1 jour & 2 jours ouvre demain à 10h !
↳ 1 jour (mercredi uniquement)
↳ 2 jours (jeudi et vendredi)
Le pass 3 jours est d'ores et déjà disponible.
📌 RDV demain à 10h ici 👉 reg.devoxx.fr
↳ 1 jour (mercredi uniquement)
↳ 2 jours (jeudi et vendredi)
Le pass 3 jours est d'ores et déjà disponible.
📌 RDV demain à 10h ici 👉 reg.devoxx.fr
November 12, 2025 at 8:00 AM
⏰ Rappel ⏰ : la billetterie pour les pass 1 jour & 2 jours ouvre demain à 10h !
↳ 1 jour (mercredi uniquement)
↳ 2 jours (jeudi et vendredi)
Le pass 3 jours est d'ores et déjà disponible.
📌 RDV demain à 10h ici 👉 reg.devoxx.fr
↳ 1 jour (mercredi uniquement)
↳ 2 jours (jeudi et vendredi)
Le pass 3 jours est d'ores et déjà disponible.
📌 RDV demain à 10h ici 👉 reg.devoxx.fr
Reposted by Arnaud Héritier
medium.com/@sayantann7/...
Building apps that work to demo solutions can be done in many ways and usually quickly. Once you move into the phase of longer running and scalable approaches you have to spend more time getting it right. There are many approaches and tools you can use to help. (1️⃣/3️⃣)
🧵
Building apps that work to demo solutions can be done in many ways and usually quickly. Once you move into the phase of longer running and scalable approaches you have to spend more time getting it right. There are many approaches and tools you can use to help. (1️⃣/3️⃣)
🧵
How to build scalable applications using Docker, Kubernetes and ArgoCD
Learn how to build production grade scalable apps using Docker, Kubernetes and ArgoCD.
medium.com
November 10, 2025 at 3:58 AM
medium.com/@sayantann7/...
Building apps that work to demo solutions can be done in many ways and usually quickly. Once you move into the phase of longer running and scalable approaches you have to spend more time getting it right. There are many approaches and tools you can use to help. (1️⃣/3️⃣)
🧵
Building apps that work to demo solutions can be done in many ways and usually quickly. Once you move into the phase of longer running and scalable approaches you have to spend more time getting it right. There are many approaches and tools you can use to help. (1️⃣/3️⃣)
🧵