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Javier Casal

@javiercasal

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13.11.2023
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Latest posts by Javier Casal @javiercasal

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04.03.2026 06:52 👍 8822 🔁 3298 💬 30 📌 47

this is super cool (in theory; i have not tested)

i think in general we're moving towards the world where the most valuable software output is a spec (tests / types / api)

24.02.2026 22:02 👍 145 🔁 10 💬 12 📌 4
Redefining the Software Engineering Profession for AI | Communications of the ACM

Props to @scott.hanselman.com for naming the elephant in the room in big tech.

AI coding tools boost senior engineers but create challenges for juniors who lack context to judge outputs. Cutting junior hiring for near-term gains weakens the future pipeline. We’ll need apprenticeship-style paths.

25.02.2026 05:19 👍 209 🔁 43 💬 8 📌 4

I worked on a few fairly prominent efforts in open source (Istio, OpenAPI), but I think of all of them, it’s gRPC that I think has the coolest story. Pull up a chair and set for a spell (any inaccuracies in what follows are 100% my fault for having a bad memory!).

19.02.2026 00:21 👍 185 🔁 45 💬 5 📌 9
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jetbrains ide detection · Issue #16728 · google-gemini/gemini-cli What would you like to be added? Adds native recognition for JetBrains IDE as a supported IDE environment. Why is this needed? Currently, Gemini CLI restricts IDE integration features to environmen...

It looks like the status/need-triage label was removed | Discussion

22.01.2026 17:00 👍 0 🔁 1 💬 0 📌 0
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PowerShell architect retires after decades at the prompt After Microsoft, Google, and a long fight for automation, Jeffrey Snover hangs up his keyboard A really important window is closing. Jeffrey Snover, chief PowerShell boffin and hero of Windows administrators around the world, has retired.…

PowerShell architect retires after decades at the prompt

22.01.2026 17:34 👍 14 🔁 3 💬 0 📌 0

The 2025 Headline of the Year Nominees

🧵

22.12.2025 23:48 👍 1928 🔁 1111 💬 28 📌 220
Screenshot of a CNBC headline that reads: “How device hoarding by Americans is costing economy.” The subtext says Americans are holding onto devices longer than ever, which may be smart for consumers but can reduce productivity.

Screenshot of a CNBC headline that reads: “How device hoarding by Americans is costing economy.” The subtext says Americans are holding onto devices longer than ever, which may be smart for consumers but can reduce productivity.

If a phone still works fine, it’s not “device hoarding” to keep using it. It’s common sense.

27.11.2025 15:58 👍 9430 🔁 1415 💬 1245 📌 360

En estas fechas siempre me pongo nostálgico. Recuerdo este mismo día pero de hace años, mi madre cocinando el pavo mientras mi padre veía el partido de football con mi hermano. Nunca me interesó demasiado el deporte, así que aprovechaba ese rato para estar leyendo en mi cuarto.

27.11.2025 10:51 👍 237 🔁 92 💬 8 📌 12

Welp, turns out it’s not real.

Just opening DevTools makes all timers 5-100× slower, due to the overhead of capturing stack traces. Even if you do nothing else (don’t record performance, etc)!

Guess who accidentally spent a weekend optimizing this 😅

(h/t @paul.irish for explaining why)

14.11.2025 03:42 👍 31 🔁 5 💬 3 📌 1
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If you don't tinker, you don't have taste programmer by day, programmer by night.

"No time spent learning, is time wasted." seated.ro/blog/tinkeri...

28.10.2025 23:50 👍 61 🔁 12 💬 3 📌 0
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Brent Hinds, cofundador y guitarrista de Mastodon, muere en accidente de motocicleta A los 51 años, el cofundador, guitarrista principal y vocalista de la banda de metal Mastodon, perdió la vida en un trágico accidente en la ciudad de Atlanta.

No puede ser... Qué putada.

es.rollingstone.com/brent-hinds-...

22.08.2025 07:51 👍 37 🔁 9 💬 6 📌 1
Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland
Tech Promised Everything. Did it deliver? | Scott Hanselman | TEDxPortland YouTube video by TEDx Talks

Hey friends! I did a TEDx talk and it's now up on the TED Conferences YouTube. It's possibly the best and most important talk I've ever done.

I would ask that you watch it, and please SHARE it broadly and widely. Thank you! youtu.be/dVG8W-0p6vg #AI #Tech #TED

17.07.2025 17:37 👍 741 🔁 282 💬 55 📌 51
Web performance: from zero to hero - Javier Casal Ruiz
Web performance: from zero to hero - Javier Casal Ruiz YouTube video by VLC TechFest

Ya están las charlas del #VLCTechFest en YouTube!

www.youtube.com/watch?v=vJtf...

18.06.2025 20:44 👍 4 🔁 2 💬 0 📌 0
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What Are People Still Doing on X? Imagine if your favorite neighborhood bar turned into a Nazi hangout

It’s long past time for you to burn your Twitter account like I did. www.theatlantic.com/technology/a...

23.05.2025 19:49 👍 140 🔁 24 💬 6 📌 0
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VLCTechFest 2025 14 de junio de 2025. Evento gratuito y abierto a todo el mundo que reúne a las comunidades tecnológicas de la Comunidad Valenciana.

En el próximo #VLCTechFest estaré dando una charla sobre Web Performance! vlctechfest.org/es/#sessions

22.05.2025 14:10 👍 2 🔁 1 💬 0 📌 0
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Sí, ayer en @retrobarcelona.bsky.social le enseñamos a John Romero cómo era eso de jugar a DOOM con el mod de Chiquito de la Calzada.

Vídeo de Andrea Crespo, ¡gracias!

05.05.2025 16:58 👍 105 🔁 43 💬 5 📌 4
When you're overqualified for the job
When you're overqualified for the job YouTube video by AreYouNotEntertained?

Pasan los años y este sigue siendo uno de mis vídeos favoritos de internet:

10.04.2025 14:59 👍 73 🔁 13 💬 2 📌 0
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¿Cómo puedes dormir por la noche, Carlos Mazón? Daba por supuesto que, ante una respuesta tardía, insuficiente y errónea a la dana, el máximo responsable dimitiría, aunque sólo fuese por una muy elemental noción de dignidad

Bon dia. He escrit açò a @elpais.com.

elpais.com/espana/comun...

06.04.2025 09:38 👍 46 🔁 24 💬 1 📌 4
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02.04.2025 17:31 👍 16554 🔁 4664 💬 117 📌 123
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Where have all the tech creators gone?

22.03.2025 04:28 👍 721 🔁 115 💬 49 📌 47
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GitHub - electronicarts/CnC_Red_Alert: Command and Conquer: Red Alert Command and Conquer: Red Alert. Contribute to electronicarts/CnC_Red_Alert development by creating an account on GitHub.

EA released the source for Command & Conquer Red Alert on github.

github.com/electronicar...

27.02.2025 20:49 👍 164 🔁 47 💬 10 📌 7
A line drawing of the IBM 701's "main frame", showing its physical dimensions and how the frame swings open. The drawing is dated 3-4-53. The drawing is from the document "Type 701 EDPM Installation Manual", obtained from the Computer History Museum archives.

A line drawing of the IBM 701's "main frame", showing its physical dimensions and how the frame swings open. The drawing is dated 3-4-53. The drawing is from the document "Type 701 EDPM Installation Manual", obtained from the Computer History Museum archives.

What is the origin of the word "mainframe"? Digging through archives, I traced it back to 1953. The IBM 701 computer was built from "frames": power frames, a storage frame, a drum frame, and the main frame. This 1953 drawing from the Installation Manual shows the dimensions of the "main frame". 1/n

01.02.2025 18:54 👍 310 🔁 98 💬 9 📌 8
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New in Chrome DevTools: Skip irrelevant scripts in the Flame Chart! Debugging is faster and more actionable 🙏

02.02.2025 20:31 👍 241 🔁 38 💬 5 📌 6

AAAAAAAAAAHHH

29.01.2025 00:50 👍 31 🔁 7 💬 0 📌 0
The Mario 64 intro scene with a letter from Princess Peach, reading:
Dear Mario. Please come to the castle. I'm down bad. Yours truly-- Princess Toadstool (Peach)

The Mario 64 intro scene with a letter from Princess Peach, reading: Dear Mario. Please come to the castle. I'm down bad. Yours truly-- Princess Toadstool (Peach)

CATS from the video game Zero Wing (the All Your Base Are Belong To Us game), saying: "I am Locutus of Borg. Resistance is Futile"

CATS from the video game Zero Wing (the All Your Base Are Belong To Us game), saying: "I am Locutus of Borg. Resistance is Futile"

Dracula from Castlevania: Symphony of the Night, saying to Richter "Get out of my house"

Dracula from Castlevania: Symphony of the Night, saying to Richter "Get out of my house"

The transportation advisor from SimCity 2000, saying "YOU CAN'T STAY ON TWITTER! YOU WILL REGRET THIS!"

The transportation advisor from SimCity 2000, saying "YOU CAN'T STAY ON TWITTER! YOU WILL REGRET THIS!"

My big project: The Death Generator.
It's a tool for making fake video game screenshots, just fill in new text and it'll give you a (generally) pixel-accurate image back, the correct fonts and everything.

deathgenerator.com

08.12.2024 07:17 👍 22117 🔁 8548 💬 1256 📌 3391

We just moved @khanacademy.org over to using @rspack.dev today for our prod builds, from Webpack 5. We saw build times improve by about 2min or so (approx. 3min -> 1min). It was extremely easy to move to from Webpack, highly recommended for anyone on the fence!

17.01.2025 00:18 👍 57 🔁 9 💬 3 📌 1
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David Lynch rechaza explicar el significado de su propia muerte David Lynch, el visionario director que cambió el cine independiente de Estados Unidos desde los años 80, ha muerto y fiel a su estilo, y tal y como hizo a lo largo de su carrera con sus inquietantes ...

David Lynch rechaza explicar el significado de su propia muerte

www.elmundotoday.com/2025/01/davi...

16.01.2025 19:42 👍 1654 🔁 495 💬 15 📌 32

I'm going to copy/paste that thread from May 8, 2018 here:

I made the mistake of reading the comments on HN around Kubernetes and there is a common thread around Kubernetes being too complex. This is something that I've been thinking quite a bit about for quite a long time. /1

03.01.2025 20:06 👍 10 🔁 6 💬 3 📌 2
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My game Stimulation Clicker is out now, enjoy :)

> neal.fun/stimulation-...

06.01.2025 16:09 👍 1125 🔁 299 💬 97 📌 116