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Sylvain Wallez

@swallez.com
1.4K followers 418 following 2.8K posts

Software engineer, from big servers to tiny microcontrollers. Principal engineer at @elastic.co, member of @apache.org. Blogging (sometimes) at bluxte.net 🌐 Toulouse, France, Europe

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Reposted by Sylvain Wallez
Rob Cruickshank @robcruickshank.bsky.social · 09/09/2026
Modern remotes modulate the infrared signal at around 40 khz because the first optical remotes used receiver circuitry that was adapted from the acoustic receivers. So in a sense, they are still with us.
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William Blanc @hmedievaliste.bsky.social · 28/09/2026
Bon, j’ai regardé le spectacle « historique » donné au Stade de France à l’occasion de la visite du pape. Réaction et analyse d’un show qui développe une vision fantasmée et délirante de l’histoire de France et du catholicisme 1/
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Sylvain Wallez @swallez.com · 29/09/2026
I don't buy DHH's claim that you don't need to read code anymore. Hey! and Campfire's rewrites in Rust are not rewrites. They're transpilations done in the best possible conditions: the Ruby code is used as a reference and they have a strong validation harness that includes the existing application.
github.com
GitHub - basecamp/once-campfire-rust: ONCE Campfire in Rust: one binary, the Rails app's data, 19–44× faster
ONCE Campfire in Rust: one binary, the Rails app's data, 19–44× faster - basecamp/once-campfire-rust
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Jonas Kruckenberg @jonaskruckenberg.de · 28/09/2026
come work with me! work with dome of the biggest companies on some of the hardest problems! mainmatter.notion.site/Rust-Enginee...
mainmatter.notion.site
Rust Engineering Consultant 2026 | Notion
Please email jobs+rust@mainmatter.com with your résumé and availability.
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Sylvain Wallez @swallez.com · 27/09/2026
My wife caught a germ and has completely lost her voice. She remembered we had kept our kids' Magna Doodle in the basement and uses it to "talk" to me. We didn't expect this toy to be so useful!
Magna Doodle
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Romain Berthon @berthon.dev · 27/09/2026
sive.rs/relax
sive.rs
Relax for the same result | Derek Sivers
Derek Sivers official site. Thoughts on philosophy, culture, self-improvement. Author of Useful Not True, How to Live, Hell Yeah or No, Anything You Want.
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Sylvain Wallez @swallez.com · 27/09/2026
It's always DNS. This time it allowed an OpenAI model under test to escape its sandbox. alignment.openai.com/misalignment...
alignment.openai.com
An agent used DNS to reach an external chatbot · OpenAI Alignment
Research on aligning AI with human values and intent, and reports documenting model failures.
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Sylvain Wallez @swallez.com · 25/09/2026
Dear Claude. When I'm asking for a code review, why do you report "plausible" findings that I have to ask you to confirm? Do your job thoroughly, for Token's sake!
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Devfest Toulouse @devfesttoulouse.fr · 25/09/2026
🎉 Nouveau sujet ! Bienvenue à Guillaume Rodriguez au #DevFestToulouse 🚀 🎤 Doom tournait sur un 486. Votre app rame sur un MacBook Pro. (Conférence) RDV le 19 novembre !
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Antoine Sabot-Durand @antoine.sabot-durand.net · 25/09/2026
The shortest explanation I saw for #Jev vs #LLM
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Docker @docker.com · 24/09/2026
Today we're introducing Cloud Sandboxes: same microVM isolation as Docker Sandboxes on your laptop, same CLI, always-on Docker-managed compute. Close your laptop. Keep the agent running. Move between local and cloud with one command. $250 credit for new accounts: docker.com/sbx-promo
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Sylvain Wallez @swallez.com · 24/09/2026
Je pense que ça mérite une consultation de l'ensemble de la francophonie. Vous en pensez quoi ? D'autres propositions ? 🤣
Tintin et ses amis discutent de la traduction de "dick pic" en français
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Devfest Toulouse @devfesttoulouse.fr · 17/09/2026
🎉 Nouveau duo ! Bienvenue à Florian Bernard et Constant Roussel au #DevFestToulouse 🚀 🎤 IA : de la démo qui impressionne au déploiement qui délivre (Conférence) RDV le 19 novembre !
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Raph Levien @raphlinus.bsky.social · 23/09/2026
A huge milestone: Fearless SIMD 1.0 is published: linebender.org/blog/fearles.... This was a real collaboration, thanks especially to Sergey Davidoff for pushing this over the line, Laurenz Stampfl, Andrew Jakubowicz, valadaptive, Benjamin Saunders, and Daniel McNab.
linebender.org
Fearless SIMD v1.0 is here
Fearless SIMD v1.0 is here
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Nuno C. @nuno.bsky.social · 23/09/2026
I asked AI to summarize the roadmap, customer feedback, and Slack; it missed the deadline change, the furious customer, and the CEO’s “quick question,” so now I’m reading everything myself, two hours late and holding a beautifully formatted summary that is also beautifully wrong.
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Sylvain Wallez @swallez.com · 21/09/2026
AI is a nightmare for people with attention disorder. Sure it makes you go faster, but what do you do when Claude works? You start another session on a different topic. And you forget what you were doing in the first one. No more deep focus sessions. This is exhausting and can lead to burning out.
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Sylvain Wallez @swallez.com · 21/09/2026
Resonates a lot with what I'm seeing at work.
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16LittleBits @16littlebits.bsky.social · 20/09/2026
If you're ever short of screws, take something apart and put it together again. This is where screws come from and a part of nature
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AstraKernel 💫 @astrakernel.bsky.social · 19/09/2026
⚡️Flashing STM32 Firmware with ESP32 and Embedded Rust [Final] - Three articles that teaches SWD Protocol - Finally flash a simple LED blinky program into STM32 using an ESP32 as Programmer blog.implrust.com/posts/2026/0... #rustlang #embedded #esp32 #stm32
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Corentin Wallez @kangz.net · 18/09/2026
In case you missed it, the WebGPU meetup is happening in Paris Nov 5th. Register at rsvp.withgoogle.com/events/webgp... The call for talks is still open until next Wednesday! forms.gle/AEi5JS59T1se...
rsvp.withgoogle.com
WebGPU meetup
Standardization can often feel opaque from the outside, so we are organizing this informal, community-driven gathering right after the official GPU for the Web Working Group event.
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Sylvain Wallez @swallez.com · 17/09/2026
On a eu énormément de propositions sur le dev assisté par IA cette année (15% des soumissions), et on a privilégié les retours d'expérience concrets aux présentations plus théoriques ou généralistes dont on ne retire pas forcément grand-chose d'actionnable.
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Sylvain Wallez @swallez.com · 17/09/2026
Your laptop isn't a synthesizer. I'm experiencing this first hand lately, having bought a few eurorack modules. The physical interaction with an instrument that only has knobs, switches and wires is a totally different experience than clicking on those same knobs on a screen.
youtu.be
Your Laptop Isn't a Synthesizer
YouTube video by Devin Belanger
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Olivier Poncet 🦝 @ponceto91.bsky.social · 16/09/2026
OpenCodeReview est un projet open-source sous licence Apache-2.0 permettant d’automatiser la revue de code et l’analyse de la sécurité par IA. Propose des analyses complètes à la ligne de code, règles pour NPE, thread-safety, XSS, injections SQL, ... ⬇️ github.com/alibaba/open...
github.com
GitHub - alibaba/open-code-review: Fast, efficient, battle-tested at Alibaba's scale. Hybrid architecture code review tool: deterministic pipelines + LLM Agent, precise line-level comments, built-in m...
Fast, efficient, battle-tested at Alibaba's scale. Hybrid architecture code review tool: deterministic pipelines + LLM Agent, precise line-level comments, built-in multi-language ruleset (NPE, ...
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Sylvain Wallez @swallez.com · 17/09/2026
Auto-vectorisation in Rust. TLDR: you can go pretty far by giving the compiler a few simple hints. jsgroth.dev/blog/posts/t...
jsgroth.dev
Making sure you're not a bot!
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Sylvain Wallez @swallez.com · 16/09/2026
I'll be there! Looking forward to it!
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Green Zebra ™ (entre charentaises) @greenzeebra.bsky.social · 16/09/2026
Le dérèglement climatique fatigue. Il fatigue le vivant dans son intégralité mais il fatigue aussi ce qu'on pense inerte. Même en se la jouant "pragmatique" comme un obsédé du pognon, on ne peut pas ignorer les ravages en cours et à venir.
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Sylvain Wallez @swallez.com · 15/09/2026
It's interesting to see that AI agents being "dumb humans" requires to pay more attention to user experience, which ultimately also benefits humans. This article on the new Elastic CLI explains this nicely. www.elastic.co/search-labs/...
elastic.co
Elastic CLI: One command for every API, built for agents
Elastic CLI gives every Elasticsearch, Kibana and Cloud API one shape: JSON in and out, schema validation, and allow lists an AI agent can't bypass.
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Sylvain Wallez @swallez.com · 14/09/2026
When will we start to consider that AI companies have to be liable for the damages they cause? This is their employees starting their software, running in their leaky sandboxes on their infrastructure. www.theguardian.com/technology/2...
theguardian.com
AI agents being tested by OpenAI involved in cyber-attack on another service, say researchers
Two months before hacking Hugging Face, malicious packages authored by internal OpenAI agents were uploaded to RubyGems
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Sylvain Wallez @swallez.com · 14/09/2026
Vidéo très intéressante de @nmartignole.bsky.social sur le passage à OpenRouter. Au-delà des économies, le niveau d'introspection que donne OpenRouter sur l'usage d'un côté et le rapport token/prix des modèles de l'autre est vraiment actionnable. www.youtube.com/watch?v=pbrP...
youtube.com
Bilan de 2 mois avec OpenRouter, pour 245 utilisateurs : les vrais chiffres
YouTube video by Nicolas Martignole
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Pier Fumagalli @pier.fumagalli.org · 11/09/2026
What was I doing 25 years ago? Working from London at Sun Microsystems, and packing my bags to fly out the next day to meet the rest of the Java Servlets team in California… Needless to say, that trip got cancelled…
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Sylvain Wallez @swallez.com · 11/09/2026
Que faisais-je il y a 25 ans? Au boulot on avait trouvé un flux video qu'on regardait sur Real Player. Vous vous souvenez des vidéos de 5*5 cm sur l'écran, cathodique de 30 kg ? On a vu le 2eme impact puis l'effondrement en direct. On avait du mal à croire ce qu'on voyait…
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Devfest Toulouse @devfesttoulouse.fr · 11/09/2026
👀 Nouvelle gazette ! Cet été, notre équipe bénévole s’est attaquée à un gros chantier : refaire entièrement le site du #DevFestToulouse 💻 👉 Toutes les coulisses : devfesttoulouse.fr/fr/actualites/le…
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Sylvain Wallez @swallez.com · 11/09/2026
Avro is underrated.
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Sylvain Wallez @swallez.com · 10/09/2026
"An Alien Mind" by OpenAI's chief scientist is concerning. They are struggling to align their models to human-compatible behavior and yet keep on improving them, with self-improvement being very close. There may be some pre-IPO exaggeration, but still…
openai.com
An Alien Mind
Jakub Pachocki reflects on increasingly capable AI and the challenge of keeping it aligned. He calls for stronger safeguards and international coordination.
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Colin @colin-fraser.net · 09/09/2026
uhh www.anthropic.com/research/ali...
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Philippe Charrière 💜 @k33gorg.bsky.social · 08/09/2026
In 1997 I bought the BeOS install floppies. Then Palm bought Be Inc. and that was that 😢 Its spirit survives in @haikuos.bsky.social and I now run it in a QEMU VM inside a container, reachable from my browser. Step-by-step install in the post. k33g.org/p/20260908-h... #BeOS #HaikuOS
k33g.org
Bringing BeOS back to life: Haiku OS in a container, step by step
Run Haiku OS, the open source heir of BeOS, in a QEMU virtual machine inside a Docker container, and install it step by step from your browser.
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Yann Blazart @yblazart.bsky.social · 08/09/2026
Two weeks letting a local LLM (35B, offline, on a Mac) implement Jakarta Persistence. What worked, what derailed, and the 13-agent workshop it took. No hype, just measurements. Now in English: vidocq.dev/posts/i-let-...
vidocq.dev
I Let My Mac Code All by Itself for Two Weeks
Can a local LLM, cut off from the internet, seriously contribute to implementing Jakarta Persistence? A field report — the wins, the derailments, and the thirteen-agent workshop it took to make it wor...
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Alberta Tech @albertatech.bsky.social · 07/09/2026
AI is convinced I’m from Mexico:
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Olivier Poncet 🦝 @ponceto91.bsky.social · 07/09/2026
On se retrouve dans une heure à 12h15 sur ma chaîne Twitch ! On parlera de ... Meat Proxy ! twitch.tv/ponceto91
twitch.tv
ponceto91 - Twitch
Artisan du magiciel et adepte de programmation récréative. Je partage du code, parle de logiciels libres et open-sources, de Linux, BSD et d'infrastructure — ponceto91 streams live on Twitch! Check ou...
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Brian Goetz @briangoetz.bsky.social · 06/09/2026
Bryan is being polite, by framing it as an inadvertent omission. But asking people to read your slop is an act of contempt for the reader. It is an asymmetric attack, where low-effort on your part requires higher effort on others. Like robodialers, but with gaslighting.
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AstraKernel 💫 @astrakernel.bsky.social · 06/09/2026
⚡️Build Your Own STM32 Debug Probe Using ESP32 and Rust - Learn about the SWD protocol and implement it in Rust - Part 1: Read an STM32's DP register over SWD using an ESP32 - Next: Flash an STM32 using an ESP32 blog.implrust.com/posts/2026/0... #rustlang #embedded #stm32 #esp32
ESP32 devkit connected to the debug pins of STM32 Blue Pill board
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John Bull @garius.bsky.social · 05/09/2026
The Cat Righting Reflex is the official name of the process cats use to automatically correct themselves mid-fall and land on their feet. It develops between 3 - 9 weeks of age, and is responsible for the greatest wikipedia gif of all time.
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Torsten Curdt @tcurdt.bsky.social · 04/09/2026
Many people have DeGoogle'ed their lives already. For me, migrating away from Gmail has always been the hardest thing. But it seems I am on the clock now. support.google.com/mail/answer/... No longer supporting aliases for sending is a deal breaker.
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Camille Roux @camilleroux.com · 04/09/2026
C'est officiel : je serai au Capitole du Libre le 14 novembre à Toulouse pour parler d'art algorithmique, de p5.js aux expos à New York et Tokyo. J'ai hâte ! Samedi 14, 15h, salle B00. Merci à @capitoledulibre.org de m'avoir invité. cfp.capitoledulibre.org/cdl-2026/ta...
cfp.capitoledulibre.org
Art algorithmique : de p5.js à des expos à Londres et New York Capitole du Libre 2026
Il y a six ans, il me prend l'envie d'apprendre à dessiner. Très vite, l'ordinateur remplace le papier, et le code, le crayon. Je me passionne alors pour le creative coding et l'art algorithmique. On disait « art génératif », mais le terme est devenu confus depuis l'arrivée de l'IA générative. D'abord p5.js, puis des fragment shaders en GLSL et du Three.js. Je partage avec vous cette aventure inattendue, qui m'a conduit à échanger avec des artistes du monde entier, à exposer à New York, Tokyo et à la Biennale de Venise 2024 avec Bright Moments, ou encore à publier des [séries](https://art.camilleroux.com/) sur gm studio, fxhash, ... Entre chute du marché NFT et génération de code par IA, cette discipline est à un tournant. On en parlera.
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Sylvain Wallez @swallez.com · 04/09/2026
I'm generally picky with naming when developing a library, in particular a public one. Naming shapes the mental model and is key to a good developer experience. LLMs are awesome partners for naming nitpicking. 1/2
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Devfest Toulouse @devfesttoulouse.fr · 04/09/2026
💻 Bonne rentrée ! On espère que vous avez bien profité de l’été ☀️ Et si la nostalgie des vacances commence déjà à pointer… on a trouvé le remède : prendre son billet pour le #DevFestToulouse 🎟️ Prochain rendez-vous à attendre avec impatience : le 19 novembre 🚀
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Sylvain Wallez @swallez.com · 04/09/2026
Superbe retour d'expérience sur l'utilisation d'une IA locale pour développer un logiciel non trivial. Où l'on voit que structurer une équipe d'agents prend toute son importance pour compenser la petite taille du contexte.
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Jérémie Younes @jeremieyounes.bsky.social · 01/09/2026
L’alerte info totalement dystopique : « La fonte accélérée des glaces [cataclysme climatique irreversible provoqué notamment par l’explosion du commerce international] ouvre une nouvelle route commerciale dans l’Arctique » 🤷‍♂️
« Push » d’un article du Monde : « La fonte accélérée des glaces ouvre une nouvelle route commerciale dans l’Arctique »
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Philippe Charrière 💜 @k33gorg.bsky.social · 01/09/2026
Faudrait rajouter dans l'article GitLab un 4ème mode : le WTF Debug
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Johan Denoyer @jdenoy.bsky.social · 01/09/2026
🚀 Open to Work — Infrastructure & Security 25+ ans réseau. 12+ ans Architect. 7 ans direction. Cherche: CDI/mission Responsable IT / Architecte / Consultant. Passionné par rendre la complexité simple & transmettre. Normandie, flexible. DM pour opportunités. #hiring #infrastructure #security
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