Robin Marx

Network protocols (HTTP/2, HTTP/3, QUIC) and Web performance @Akamai. PhD. Dad. Longsword fencer. He/Him.

@programmingart.bsky.social

[Robin Marx @programmingart]

In case you want to know more about why #HTTP3 is needed and how it works, I have an in-depth article series @smashingmag : https://t.co/Xgf7sqCu50

[Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀 @HenriHelvetica]

📢 Tomorrow will be H2 protocol's anniversary. With multiplexing, updated header compression and more, H/2 was a timely arrival. To discuss the arrival of H2, we are joined by none other than @programmingart
expert in web protocols!
📆 May 14TH
⏰ 2PM EDT
https://t.co/0VxpiDN1wE

[Shaw (spirit/acc) @shawmakesmagic]

💀💀💀

[DiscussingFilm @DiscussingFilm]

Apple has landed the rights to turn ‘MISTBORN’ into a film franchise & ‘THE STORMLIGHT ARCHIVE’ into a TV series.

Brandon Sanderson will write, produce and consult on all projects.

(Source: https://t.co/Ka6RvxmT3S)

[Robin Marx @programmingart]

TTFB is a notoriously difficult performance metric, because it has so many different definitions and nuances.

New features like Early Hints and Speculation Rules only make that worse.

My new blog highlights these issues so you know what to keep in mind:
https://t.co/PqLvio1GcG

[Stoyan Stefanov 🪩 @stoyanstefanov]

Web Performance Calendar day 24 with @programmingart on TTFB. Yes, it's one of those X-mas Eves where we cuddle by the fire, drop everything and immerse into re-learning and re-evaluating what we thought we knew about a concept we use daily
https://t.co/H8kX9oppmN

[Stoyan Stefanov 🪩 @stoyanstefanov]

Web Performance Calendae day 13 with Yoav Weiss (@yoavweiss) showing us a clever and creative way to ship *only* critical/necessary CSS for each page type (home, search, etc) *and* also avoid duplicating code in CSS bundles.

https://t.co/N5eI5BALBR

[Mirru 💎 @mirrutatep]

The reason genAI is cheap and unlimited right now is because it is heavily subsidized by blind and reckless investing…

As a business venture it is vastly unprofitable compared to the energy it costs and once the bubble pops the landscape will change

[Robert Graham @robertgraham]

You don't need to understand the OSI Model to work in cyber...

...because nobody in cyber really understands the OSI Model anyway. They've all heard of it. They can all describe parts of it they think they understand. But everyone knows they are hazy on other parts.

The infographic below is wrong, actually. Any graphic like this that you see is wrong. You can verify this yourself by searching for "OSI Model" on Twitter and see whether everyone's pictures of the 7 layers actually match each other. They don't.

In other words, you know they are wrong not because you can find the correct one somewhere (you can't), but simply because they all disagree with each other.

The reason is that OSI was created to for how mainframe networking worked in the late 1970s, to create an official set of standards. The Ethernet and TCP/IP Internet didn't conform to that model, but became the unofficial, de facto standards anyway.

Ever since they've been trying to "retcon" the OSI Model, to reconcile it with Ethernet and the Internet. "Retcon" means "retroactive continuity", like when the second Star Wars movie says that Vader is Luke's father, when in the first movie, it said Vader killed Luke's father.

The same with OSI Model. Instead of paying attention to what the original model actually was, they attempt to redefine it to fit the Ethernet and Internet that we have now.

But there's no standard for this, so everyone's retcon version is slightly different, so no two sources describe the model the same.

Meaning, nobody really knows that the model is.

It's kinda freaky. Everyone is hazy on the details, especially the upper layers. But they are certain somebody, somewhere, has a handle on this, a expert that truly knows the details. There isn't. At least, there's me, telling you it's all wrong. But there's no expert that can challenge me on this, such as somebody who defends the above infographic as being correct.

[Seth Harp @sethharpesq]

Calling it now: There will be no consequences for the creators of the AI bubble that is about to take down the US economy. The main culprits will be made whole by the taxpayer, and the gullible fools in media who promoted the bogus tech will remain in cushy positions of influence

[🔛🔝 @killingherass]

retweet if you actually just fucking hate AI

[karachi memon @reembeem97]

That’s actually the perfect use of generational wealth

[Tom Taylor @TomTaylorMade]

I hate AI with a passion.
It’s an unregulated, unconsidered, human-ingenuity-wrecking, resource-sucking, climate-destroying theft-machine being pushed by short-sighted, greedy individuals putting product and profit over people and planet.
But it turns out… I can hate it more.

[Andrew Healey @healeycodes]

wrote the same word-counting program 5 times, each faster than the last

best result: 494× faster than my first Python version — by using SIMD in C

all are O(n), but some squeeze far more from the CPU and memory!

[DebugBear @DebugBear]

Sometimes servers don't send HTTP response data in the right order.

Our new article explains why request priority matters for HTTP/2 and HTTP/3 connections, and how poor server-side support can impact page speed.

https://t.co/I4yXdq2VJw

[Robin Marx @programmingart]

We're live right now, come join us!

[Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀 @HenriHelvetica]

📢 Excited to have @TimVereecke join me Wednesday to talk shop about 2025 and details from a recent blog post from he and @programmingart re: performance in 2025. Join us!
✨ SPDY STREAM 003 ✨
📆 Wed July 9th
⏰ 1p EST
🔗 https://t.co/Sb4JXIEA6q
🔗 blog post: https://t.co/ixw0iX97ik

[Henri Helvetica 🇭🇹 👨🏾‍🚀 🚀 @HenriHelvetica]

📢 Excited to have @TimVereecke join me Wednesday to talk shop about 2025 and details from a recent blog post from he and @programmingart re: performance in 2025. Join us!
✨ SPDY STREAM 003 ✨
📆 Wed July 9th
⏰ 1p EST
🔗 https://t.co/Sb4JXIEA6q
🔗 blog post: https://t.co/ixw0iX97ik

[Project Hail Mary @projecthailmary]

11.9 Light-years from home.
6th grade science teacher.
1 chance to save us all.

Watch the trailer for Project Hail Mary – based on the novel by Andy Weir, starring Ryan Gosling, and directed by filmmakers Phil Lord and Christopher Miller. Only in theaters and IMAX - 3.20.26

[The PrettyMuchCompleterian @TLiterarian]

Is everyone fucking nuts? Did we actually believe that after decades and decades of studying the brain and coming up with next to zilch, that a handful of rich, arrogant midwits in Silicon Valley would come to a full understanding of consciousness and deliver to us artificial general intelligence? Do you know that the Swiss Blue Brain Project and Human Brain Project, both terminated last year after years of expensive research, which sought to digitally reconstruct entire brains, discovered next to nothing useful about intelligence or consciousness, except that a brain, even a mouse brain, is so complex that it overwhelms super computers? Ten years of the HBP made "no major contributions" to an understanding of the brain. We do not understand the mind or the brain. AI is a toy, a fake. What we have is a language model—an algorithm. Give it up. It is a joke.

[Harry Roberts @csswizardry]

Please stop building SPAs. Just because your pages all have the same header and footer, it does not mean you have a single page app. Over 90% of the SPA projects I’ve worked on should not have been SPAs (and were markedly worse because of it).

[cinesthetic. @TheCinesthetic]

The Big Short stays wildly rewatchable. Fast, furious, and somehow makes finance thrilling—stacked cast firing on all cylinders.