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Posts by Sébastien Deleuze

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Making Maven Users Use JSpecify/NullAway More Easily with the Nullability Maven Plugin - IK.AM This article introduces how to introduce JSpecify and NullAway in Maven and simplify the configuration with the Nullability Maven Plugin.

Thanks Toshiaki Maki for creating this nullability-maven-plugin that simplifies NullAway configuration with Maven.

#java #spring #jspecify

ik.am/entries/900/en

19 hours ago 8 5 0 0
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From the programming community on Reddit: AI Coding Killed My Flow State Posted by Fantastic-Cress-165 - 386 votes and 175 comments

Has AI coding killed our flow state? www.reddit.com/r/programmin...

2 days ago 5 0 1 0
Spring: The Documentary [OFFICIAL TRAILER] Coming May 7th! 🚨
Spring: The Documentary [OFFICIAL TRAILER] Coming May 7th! 🚨 🚨 Spring: The Official Documentary premieres May 7th! Spring didn’t start as a framework — it started as a reaction to complexity. What began as a challenge to enterprise Java became a global…

Trailer for the Spring @spring.io documentary, featuring legends like Rod Johnson, Jürgen Höller, @starbuxman.joshlong.com, Rossen Stoyanchev, Mark Pollack, @seb.deleuze.fr, David Syer, @snicoll.be, @scottfrederick.us, @sergialmar.com and... me. 🙈

www.youtube.com/watch?v=4qTw...

2 days ago 16 6 0 0
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The ASIC Unbundling Inference is two-thirds of all AI compute. Almost all of it still runs on chips designed for training. The market is finally noticing the mismatch.

you: "hey dave! when are you going to talk about ANYTHING else besides edge compute?"
me: "NOT TODAY MOTHERFUCKER"

www.distributedthoughts.org/2026-04-16-t...

4 days ago 6 3 1 0

Thanks @sergialmar.com, this edition of @springio.net was my best conference experience yet! #springio26

4 days ago 5 0 0 0

If you are at @springio.net, there is a Spring team Ask Me Anything session at 3:30 pm Track 2. #springio26

5 days ago 0 0 0 0
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#InfoQ dives deep into #SpringFramework 7 & #SpringBoot 4.

Key Focus: the shift toward core resilience by integrating features such as retry and concurrency throttling directly into the framework, alongside the performance benefits of modularizing auto-configurations.

🔗 bit.ly/4vmqb6S

#Java

5 days ago 8 6 1 0
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My Kotlin talk is today (Wednesday) at @springio.net Track 2 12:30 PM. #springio26 #spring #kotlin

5 days ago 3 1 0 0
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If you're at Spring IO this week, check out all my colleagues talks. Plus, there's a new batch of Tanzu Cards available... COLLECT THEM ALL OR PERISH AT THE HANDS OF THOSE WHO SUCCEEDED IN THE GRAND COLLECTION! spring.io/blog/2026/04...

6 days ago 12 6 1 1

3.0 May 2027 : unified Virtual Thread friendly stack (no more blocking versus reactive dilemma)

6 days ago 1 0 1 0

2.1 November 2026 : dedicated agentic API and annotations, durable workflow, sessions

6 days ago 0 0 1 0

2.0 May 2026 : Spring Boot 4 baseline, Jackson 3, null safety, API refinements, MCP updates, focus on quality and consistency

6 days ago 1 0 1 0
Christian on stage in front of the Spring AI 2.1 roadmap

Christian on stage in front of the Spring AI 2.1 roadmap

@tzolov.bsky.social introduces the @spring-ai.bsky.social roadmap at Spring I/O keynote! 🧵

#spring #java #springio26

6 days ago 7 5 1 0
Rossen on stage with « a Loom-friendly stack » slide

Rossen on stage with « a Loom-friendly stack » slide

Data points about Spring MVC performance improvements

Data points about Spring MVC performance improvements

At @springio.net keynote, Rossen shares how Spring embraces Virtual Threads, Structured Concurency, and what is coming in Spring Framework 7.1+ to support streaming on Spring MVC stack (RestClient server-sent events for example), as well as related performance improvements.

#java #springio26

6 days ago 8 4 0 0
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Bonjour à tous.tes
Nous avons l'indicible douleur de vous faire part du décès de Séverine Erhel, survenu ce lundi 13 avril 2026 à Rennes.
(information diffusée à la demande / avec l'autorisation de la famille)

1 week ago 337 210 249 60
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Sample Java code annotated with JSpecify nullability annotations

Sample Java code annotated with JSpecify nullability annotations

Is it possible to use Claude Code or Cursor to add automatically JSpecify annotations to make your Spring Boot 4 application null-safe? I will answer to this question tomorrow (Tuesday) 14:00 in the track 2 at @springio.net! #springio26

2026.springio.net/sessions/nul...

1 week ago 6 2 1 0

Ouch, I hope you don’t suffer too much!

1 week ago 1 0 1 0
Spring AI logo

Spring AI logo

We have opened a US-based position to work on the Spring AI project, and we are looking for somebody with expertise in Java, Spring and AI engineering!

If you are interested and want to join the Spring OSS team, apply via the link shared below.

broadcom.wd1.myworkdayjobs.com/en-US/Extern...

1 week ago 9 6 1 0
Spring I/O • 13-15 • April • Barcelona 2026 A two-day conference full of Spring and Cloud awesomeness. Barcelona, 13-15 April 2026

Only a few days to go until @springio.net #springio26
Join my talk Joy of Queries next week.

2026.springio.net/sessions/the...

1 week ago 10 4 0 0
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Using Spring Data JDBC With Kotlin | The IntelliJ IDEA Blog This post was written together with Thorben Janssen, who has more than 20 years of experience with JPA and Hibernate and is the author of “Hibernate Tips: More than 70 Solutions to Common Hiberna

Spring Data JDBC brings out the best in #Kotlin.
Constructor-based mapping keeps val fields truly immutable. Value classes map natively – no @Embedded, no extra setup. No proxies, no hidden state.
Check it out 👇
jb.gg/agfdv4

1 week ago 13 8 0 0

I Still Prefer MCP Over Skills https://david.coffee/i-still-prefer-mcp-over-skills/

1 week ago 2 1 0 0

« The benchmark only measures generation cost and speed, not code quality, maintainability, or runtime performance. »

1 week ago 4 0 2 0
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Ported ripgrep to a cross-platform npm package using Zig + WASI. Works on Node.js, Bun, and Deno without native binaries!

2 weeks ago 42 4 3 0
Kotlin and Spring logos

Kotlin and Spring logos

Putting the final touches on my upcoming @springio.net and @kotlinconf.com talk "Idiomatic Kotlin applications with Spring Boot 4" where I will share all my guidelines for build, logging, observability, persistence, etc.

Should be useful both for human developers and agentic engineering workflows.

2 weeks ago 7 2 0 1
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Après comme tu le rappelles, le monde de la tech a l’habitude de disrupter, pas de se faire disrupter.

Et oui grosse opportunité pour l’Europe 🤞🏼 et surtout l’Asie.

2 weeks ago 1 0 0 0

Les grosses boites anticipent, se délestent de certains profils jugés moins nécessaires dans « le monde d’après ». Il n’y a pas que ça comme ton article le souligne, mais ça reste une des composantes importantes de ces layoffs de mon point de vue.

2 weeks ago 0 0 1 0

Merci, très interessant même si je pense que l’IA n’est pas qu’une excuse. Même si les gains de productivité sont encore modestes, ça va s’accélérer, la valeur du soft se casse la gueule, la course au data center nécessite des économies, les gains sont concentrés chez quelques acteurs (hardware).

2 weeks ago 0 0 1 0

Mon avis sur les aspects non-triviaux sur lesquels « on » doit faire gaffe:
- Ça n’accélère pas tout uniformément
- Risque sur la santé mentale surtout avec la concentration de profils neuroatypiques dans l’IT
- Gros risque de destruction de valeur au global avec impacts eco et sociétaux majeurs

2 weeks ago 0 0 0 0

En phase oui, ça démultiplie/accélère donc pour les équipes qui avaient l’habitude d’automatiser la partie répétitive / qualité et de concentrer l’humain où c’est pertinent, ça se passe bien. Mais ceux qui veulent prendre des raccourcis en ignorant le côté non-déterministe, là ça fait des dégâts.

2 weeks ago 0 0 1 0

On peut effectivement aller assez loin, mais je vois aussi de plus en plus d’exemples d’équipes et de projets qui gallèrent à force de produire vite du code pas ou mal reviewé. Entropie ++, attente de gain en productivité ++ du management, perte de controle du projet, à un moment ça marche plus …

2 weeks ago 2 0 2 0