Sylvain Wallez
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swallez.com
Sylvain Wallez
@swallez.com
Software engineer, from big servers to tiny microcontrollers. Member of The ASF, working at @rerun.io, ex-Elastic. Blogging (sometimes) at https://bluxte.net
🌐 Toulouse, France, Europe
Deuxième conférence de la semaine, Apache Arrow au @capitoledulibre.org ! Moins de monde qu'à la keynote de @devfesttoulouse.fr, mais beaucoup de questions très pertinentes !
November 15, 2025 at 5:00 PM
Indeed, this is basic async knowledge. And yet they knew they were doing blocking calls to the DB from the async thread pool. They wrote it clearly in the article.
November 2, 2025 at 7:09 PM
Le mien se cale tranquille et je peux continuer à bosser !
October 29, 2025 at 9:59 PM
My work tool has arrived. What? It's a geek toy? Well, yes and no! It will allow me to really understand the needs of @rerun.io users! (It's a LeRobot SO-101)
October 29, 2025 at 5:20 PM
Obéron lui souhaite la bienvenue avec un petit blep !
October 26, 2025 at 7:20 PM
I think it's going to be "Snivel", a robot from the French comic book series "Sillage". It's a friendly all-purpose robot always ready to serve even if sometimes… sniveling. Using a robot 's name makes sense considering what this laptop will be used for 😛
October 23, 2025 at 9:01 PM
Wow, Deno is a huge project! More than 15 million lines of Rust! #EuroRust
October 9, 2025 at 10:09 AM
October 9, 2025 at 9:38 AM
The Moondream VLM (vision language model) is amazing. It's small (2B parameters) and yet accurately detects boars in a dark infrared camera image. Asking for both boar and pig increases accuracy though. #sanglicam
September 23, 2025 at 12:16 PM
First time the camera catches my cat meeting a badger. He prudently backs off, even if the badger really doesn't seem to give a shit about him 😅 #sanglicam
August 25, 2025 at 6:32 AM
Our new dishwasher has a "heads down display". Since the commands are concealed in the door's edge, the current phase and remaining time are projected on the ground. Geeky!
August 23, 2025 at 3:05 PM
"I'm outta here!"
August 23, 2025 at 9:45 AM
Petite récolte de figues "à la fraîche" (c'était un peu nuageux ce matin). C'est encore un peu tôt pour les figues blanches, les figues rouges sont pleines de sucre avec la chaleur et le manque d'eau !
August 17, 2025 at 9:54 AM
Blep!
August 13, 2025 at 10:44 AM
Is this really what users want? Disposable broken services that disappear overnight?
August 4, 2025 at 7:01 AM
The ESP32+relays in its future location, and the old stuff it replaces, which no longer works as we replaced the analog phone line with FTTH a few days ago.
July 24, 2025 at 12:07 PM
Ma tenue de l'après-midi, après une petite balade en montagne. Merci @rivieradev.fr pour ce beau t-shirt !
July 20, 2025 at 6:45 PM
AWS announcing their MCP server marketplace at AWS Summit in NYC. Behind the Elastic logo is what I've been working on over the last few weeks, with @joshmock.com's invaluable help to adapt to AWS constraints and process.
July 16, 2025 at 4:24 PM
New oven (Bosch series 8).
- Home Assistant: "Oh, I found something new on the home network. Do you want to add it?"
- Me: "Of course!"
July 13, 2025 at 11:49 AM
J'ai fait une version e-paper, mais il faudra que je m'imprime un boîtier pour ma fête des pères 😅
July 12, 2025 at 4:36 PM
The badger family visited our garden last night 🦡 #sanglicam
July 5, 2025 at 2:28 PM
Péchabou. Les sangliers transpirent du groin.
July 1, 2025 at 4:09 PM
Wow, feedback vraiment sympa sur LinkedIn ! www.linkedin.com/feed/update/...
June 28, 2025 at 11:26 AM
Et sur ma présentation sur Loco, le framework "Rust on Rails" :
June 28, 2025 at 8:23 AM
De retour de @sunnytech.bsky.social ! Une belle édition, avec du soleil et des cigales ! Et les gens ont apprécié ce que j'ai raconté. Merci !

Feedback sur ma présentation sur Apache Arrow :
June 28, 2025 at 8:23 AM