Sylvain Wallez
@swallez.com
Software engineer, from big servers to tiny microcontrollers. Principal engineer at @elastic.co, member of @apache.org. Blogging (sometimes) at https://bluxte.net
🌐 Toulouse, France, Europe
🌐 Toulouse, France, Europe
TIL about "!unread" in Signal's search bar. It allowed me to find an unread system message that was at the very bottom of my chats list despite being from yesterday. github.com/signalapp/Si...
unread notification count is wrong and won't go away · Issue #6652 · signalapp/Signal-Desktop
I have searched open and closed issues for duplicates I am using Signal-Desktop as provided by the Signal team, not a 3rd-party package. Bug Description notification count is stuck on 2 should be 0...
github.com
February 14, 2026 at 9:30 AM
TIL about "!unread" in Signal's search bar. It allowed me to find an unread system message that was at the very bottom of my chats list despite being from yesterday. github.com/signalapp/Si...
Je serai à @devoxx.fr pour vous présenter "Sous le capot d’un moteur de requête" 🎉
Une exploration des dessous du langage d'analytics ES|QL de Elasticsearch : parser, plan logique, optimiseur, plan physique, filter pushdown, exécution distribuée, calcul orienté colonnes, toussa toussa !
Une exploration des dessous du langage d'analytics ES|QL de Elasticsearch : parser, plan logique, optimiseur, plan physique, filter pushdown, exécution distribuée, calcul orienté colonnes, toussa toussa !
February 11, 2026 at 5:56 PM
Je serai à @devoxx.fr pour vous présenter "Sous le capot d’un moteur de requête" 🎉
Une exploration des dessous du langage d'analytics ES|QL de Elasticsearch : parser, plan logique, optimiseur, plan physique, filter pushdown, exécution distribuée, calcul orienté colonnes, toussa toussa !
Une exploration des dessous du langage d'analytics ES|QL de Elasticsearch : parser, plan logique, optimiseur, plan physique, filter pushdown, exécution distribuée, calcul orienté colonnes, toussa toussa !
Looks that the time of "agentic burnout" realization has come. Another must read. "It would seem that we are addicted to a new drug, and we don’t understand all of its effects yet. But one of them is massive fatigue, every day." steve-yegge.medium.com/the-ai-vampi...
The AI Vampire
This was an unusually hard post to write, because it flies in the face of everything else going on.
steve-yegge.medium.com
February 11, 2026 at 5:09 PM
Looks that the time of "agentic burnout" realization has come. Another must read. "It would seem that we are addicted to a new drug, and we don’t understand all of its effects yet. But one of them is massive fatigue, every day." steve-yegge.medium.com/the-ai-vampi...
When an industry isn't only vital to a country's economy, but even more to its actual existence as an independent country. www.tomshardware.com/tech-industr...
Taiwan rejects possibility of transferring 40% of the island's semiconductor capacity to U.S. — production on Taiwan expected to increase in lockstep with increases in U.S.-based production
The bulk of the island's fabs and leading-edge process technologies must remain in Taiwan to form the silicon shield.
www.tomshardware.com
February 10, 2026 at 8:11 AM
When an industry isn't only vital to a country's economy, but even more to its actual existence as an independent country. www.tomshardware.com/tech-industr...
Must read, seriously. The negative impact of AI on juniors and their ability to learn and grow has been a major questioning for me since GenAI started. Our industry is shooting itself in the foot, and this will have ripple effects for many years.
February 10, 2026 at 7:17 AM
Must read, seriously. The negative impact of AI on juniors and their ability to learn and grow has been a major questioning for me since GenAI started. Our industry is shooting itself in the foot, and this will have ripple effects for many years.
Reposted by Sylvain Wallez
Rust just enforces correctness at compile time so production doesn’t have to, apparently that’s controversial.
February 9, 2026 at 6:46 AM
Rust just enforces correctness at compile time so production doesn’t have to, apparently that’s controversial.
Reposted by Sylvain Wallez
We finally did it: Apache Arrow now has a security model.
The Arrow security model doesn't cover any specific Arrow implementation, but it informs about pitfalls and guardrails when dealing with potentially untrusted data in one of the Arrow formats.
@apache.org
arrow.apache.org/blog/2026/02...
The Arrow security model doesn't cover any specific Arrow implementation, but it informs about pitfalls and guardrails when dealing with potentially untrusted data in one of the Arrow formats.
@apache.org
arrow.apache.org/blog/2026/02...
Introducing a Security Model for Arrow
We are thrilled to announce the official publication of a Security Model for Apache Arrow. The Arrow security model covers a core subset of the Arrow specifications: the Arrow Columnar Format, the Arr...
arrow.apache.org
February 9, 2026 at 8:42 AM
We finally did it: Apache Arrow now has a security model.
The Arrow security model doesn't cover any specific Arrow implementation, but it informs about pitfalls and guardrails when dealing with potentially untrusted data in one of the Arrow formats.
@apache.org
arrow.apache.org/blog/2026/02...
The Arrow security model doesn't cover any specific Arrow implementation, but it informs about pitfalls and guardrails when dealing with potentially untrusted data in one of the Arrow formats.
@apache.org
arrow.apache.org/blog/2026/02...
Reposted by Sylvain Wallez
Il es là, il est beau, il est chaud : le dernier épisode de Tranches de Tech 🎙️.
Nous avions le plaisir de recevoir Estelle LANDRY 🤩.
Merci Estelle d'avoir accepté notre invitation 🙌.
Et bien entendu, merci #OVHcloud de rendre ça possible 🫶.
🎧 podcast.ausha.co/tranches-de-...
Nous avions le plaisir de recevoir Estelle LANDRY 🤩.
Merci Estelle d'avoir accepté notre invitation 🙌.
Et bien entendu, merci #OVHcloud de rendre ça possible 🫶.
🎧 podcast.ausha.co/tranches-de-...
smartlink.ausha.co
February 9, 2026 at 7:22 AM
Il es là, il est beau, il est chaud : le dernier épisode de Tranches de Tech 🎙️.
Nous avions le plaisir de recevoir Estelle LANDRY 🤩.
Merci Estelle d'avoir accepté notre invitation 🙌.
Et bien entendu, merci #OVHcloud de rendre ça possible 🫶.
🎧 podcast.ausha.co/tranches-de-...
Nous avions le plaisir de recevoir Estelle LANDRY 🤩.
Merci Estelle d'avoir accepté notre invitation 🙌.
Et bien entendu, merci #OVHcloud de rendre ça possible 🫶.
🎧 podcast.ausha.co/tranches-de-...
Not the first time I hear this. Brace yourself for a wave of "agentic burnouts", in particular among ADHD people where the continuous dopamine fix resulting from agents producing stuff leads people to endlessly keep feeding them.
AI users are working longer because, for the first time, our tools can finally keep pace with our imagination.
When output is cheap, your greatest leverage isn't how much you build, but the taste to know what is worth building - and the rest required to see the difference.
When output is cheap, your greatest leverage isn't how much you build, but the taste to know what is worth building - and the rest required to see the difference.
February 9, 2026 at 12:16 AM
Not the first time I hear this. Brace yourself for a wave of "agentic burnouts", in particular among ADHD people where the continuous dopamine fix resulting from agents producing stuff leads people to endlessly keep feeding them.
Reposted by Sylvain Wallez
„There will still be joy in programming. Just as there’s joy in joinery, knitting, and hiking.“
you could not have literally not picked worse examples though…
you could not have literally not picked worse examples though…
The cost of turning written business logic into code has dropped to zero. At best, near-zero.
The cost of integrating services and libraries, the plumbing of the code world, has dropped to zero. At best, near-zero.
What does that mean for the future?
New blog post: brooker.co.za/blog/2026/02...
The cost of integrating services and libraries, the plumbing of the code world, has dropped to zero. At best, near-zero.
What does that mean for the future?
New blog post: brooker.co.za/blog/2026/02...
You Are Here - Marc's Blog
brooker.co.za
February 7, 2026 at 9:12 PM
„There will still be joy in programming. Just as there’s joy in joinery, knitting, and hiking.“
you could not have literally not picked worse examples though…
you could not have literally not picked worse examples though…
Reposted by Sylvain Wallez
Les loups ont fait une bien plus grosse connerie 🤣
February 7, 2026 at 5:07 PM
Les loups ont fait une bien plus grosse connerie 🤣
Asking humans before opening an issue at @jetbrains.com: in IntelliJ, is there a way to open a complete project view (with nav bar, multiple tabs and everything) in a new window?
Google doesn't know, ChatGPT and Claude hallucinate. So I'm not sure this is actually possible, but HALP if you know!
Google doesn't know, ChatGPT and Claude hallucinate. So I'm not sure this is actually possible, but HALP if you know!
a fluffy cat is sitting on a table with the words `` help ! '' written on it .
ALT: a fluffy cat is sitting on a table with the words `` help ! '' written on it .
media.tenor.com
February 6, 2026 at 5:48 PM
Asking humans before opening an issue at @jetbrains.com: in IntelliJ, is there a way to open a complete project view (with nav bar, multiple tabs and everything) in a new window?
Google doesn't know, ChatGPT and Claude hallucinate. So I'm not sure this is actually possible, but HALP if you know!
Google doesn't know, ChatGPT and Claude hallucinate. So I'm not sure this is actually possible, but HALP if you know!
Pour ceux qui l'ont raté, j'ai parlé de mes caméras et mes sangliers à @devfesttoulouse.fr en novembre dernier, juste après l'optimisation des types de PQ par @wanoo.me ! Un grand moment 🤣 #sanglicam youtu.be/nxVhlSdwFwA?...
February 6, 2026 at 3:55 PM
Pour ceux qui l'ont raté, j'ai parlé de mes caméras et mes sangliers à @devfesttoulouse.fr en novembre dernier, juste après l'optimisation des types de PQ par @wanoo.me ! Un grand moment 🤣 #sanglicam youtu.be/nxVhlSdwFwA?...
3 days ago the extended boar family wandered in my garden on their way from the right-side neighbor's to the left-side neighbor's. No damage but this was Dad, Mom, Aunt, Uncle and all their children. 10 boars and a 11th one to bring up the rear. Pretty well organized family time 😅🐗 #sanglicam
February 6, 2026 at 3:19 PM
3 days ago the extended boar family wandered in my garden on their way from the right-side neighbor's to the left-side neighbor's. No damage but this was Dad, Mom, Aunt, Uncle and all their children. 10 boars and a 11th one to bring up the rear. Pretty well organized family time 😅🐗 #sanglicam
Reposted by Sylvain Wallez
Ici, je parle de Signal, de la protection de la vie privée, de Foucault et du modèle économique de la surveillance – pour mes amis français, avec toute mon affection ❤️
www.radiofrance.fr/francecultur...
www.radiofrance.fr/francecultur...
Meredith Whittaker, présidente de Signal : "L’IA n’est qu’un slogan marketing"
Quel est le point commun entre JD Vance et Edward Snowden ? Ils utilisent tous les deux la messagerie cryptée Signal. Aujourd'hui, Meredith Whittaker, présidente de cette messagerie chiffrée, est notr...
www.radiofrance.fr
February 4, 2026 at 4:15 PM
Ici, je parle de Signal, de la protection de la vie privée, de Foucault et du modèle économique de la surveillance – pour mes amis français, avec toute mon affection ❤️
www.radiofrance.fr/francecultur...
www.radiofrance.fr/francecultur...
39.1⁰C and counting 🌡️🤒🤧. The infamous #FOSDEM flu is hitting me for the first time. I had covid last October and a flu shot not long after, to no avail. My doctor said the viruses have mutated.
Now my brain is working surprisingly well when I'm comfortably sitting in front of my screen 🤷
Now my brain is working surprisingly well when I'm comfortably sitting in front of my screen 🤷
February 4, 2026 at 12:25 PM
39.1⁰C and counting 🌡️🤒🤧. The infamous #FOSDEM flu is hitting me for the first time. I had covid last October and a flu shot not long after, to no avail. My doctor said the viruses have mutated.
Now my brain is working surprisingly well when I'm comfortably sitting in front of my screen 🤷
Now my brain is working surprisingly well when I'm comfortably sitting in front of my screen 🤷
The MASH stack (Maud, Axum, SQLx and HTMX) is a nice combo! emschwartz.me/building-a-f...
Building a fast website with the MASH stack in Rust
Maud, Axum, SQLx, and HTMX make for a snappy UX and pleasant DX.
emschwartz.me
February 3, 2026 at 10:04 AM
The MASH stack (Maud, Axum, SQLx and HTMX) is a nice combo! emschwartz.me/building-a-f...
Reposted by Sylvain Wallez
10. The Hidden Bottleneck: Blocking in Async Rust shows how blocking in async Rust causes latency spikes in Tokio without errors. It recommends using eBPF tool ‘hud’ to detect and fix culprits without code changes.
cong-or.xyz/blocking-asy...
cong-or.xyz/blocking-asy...
February 2, 2026 at 6:46 AM
10. The Hidden Bottleneck: Blocking in Async Rust shows how blocking in async Rust causes latency spikes in Tokio without errors. It recommends using eBPF tool ‘hud’ to detect and fix culprits without code changes.
cong-or.xyz/blocking-asy...
cong-or.xyz/blocking-asy...
Reposted by Sylvain Wallez
Here's how to integrate #geminicli in @intellijidea.com as your #AI coding agent, via the #AgentClientProtocol (also supported by @zed.dev and others)
glaforge.dev/posts/2026/0...
glaforge.dev/posts/2026/0...
February 1, 2026 at 7:00 PM
Here's how to integrate #geminicli in @intellijidea.com as your #AI coding agent, via the #AgentClientProtocol (also supported by @zed.dev and others)
glaforge.dev/posts/2026/0...
glaforge.dev/posts/2026/0...
Reposted by Sylvain Wallez
Ça serait sympa en quizz : "Dans quel langage est écrit ce code ?"
(Hint: c'est dans un talk de @swallez.com )
(Hint: c'est dans un talk de @swallez.com )
January 28, 2026 at 6:39 PM
Ça serait sympa en quizz : "Dans quel langage est écrit ce code ?"
(Hint: c'est dans un talk de @swallez.com )
(Hint: c'est dans un talk de @swallez.com )
Reposted by Sylvain Wallez
docfind - a high-performance document search engine built in Rust with WebAssembly support
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
GitHub - microsoft/docfind: A high-performance document search engine built in Rust with WebAssembly support.
A high-performance document search engine built in Rust with WebAssembly support. - microsoft/docfind
github.com
January 28, 2026 at 1:56 PM
docfind - a high-performance document search engine built in Rust with WebAssembly support
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
Combines full-text search using FST (Finite State Transducers) with FSST compression. Uses RAKE to identify multi word phrases. Uses a postcard, a custom serialization.
github.com/microsoft/do...
