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Efficient method to capture CO2 from the atmosphere / Univ of Helsinki

https://www.helsinki.fi/en/news/innovations/efficient-method-capture-carbon-dioxide-atmosphere-de...
97•lrasinen•1h ago•56 comments

Zero-Code Instrumentation of an Envoy TCP Proxy Using eBPF

https://sergiocipriano.com/beyla-envoy.html
13•sergiocipriano•46m ago•1 comments

Akin's Laws of Spacecraft Design [pdf]

https://www.ece.uvic.ca/~elec399/201409/Akin%27s%20Laws%20of%20Spacecraft%20Design.pdf
135•tosh•5h ago•22 comments

Fifteen Most Famous Transcendental Numbers

https://sprott.physics.wisc.edu/pickover/trans.html
48•vismit2000•2h ago•17 comments

Claude wrote a functional NES emulator using my engine's API

https://carimbo.games/games/nintendo/
35•delduca•2h ago•25 comments

Show HN: Use Claude Code to Query 600 GB Indexes over Hacker News, ArXiv, etc.

https://exopriors.com/scry
161•Xyra•7h ago•45 comments

Winnie-the-Pooh brings 100 years of fame to forest

https://www.bbc.com/news/articles/c4g9dzj1xj3o
15•1659447091•6d ago•0 comments

Doom in Django: testing the limits of LiveView at 600.000 divs/segundo

https://en.andros.dev/blog/7b1b607b/doom-in-django-testing-the-limits-of-liveview-at-600000-divss...
87•andros•3d ago•31 comments

When square pixels aren't square

https://alexwlchan.net/2025/square-pixels/
13•PaulHoule•1h ago•3 comments

Tell HN: Happy New Year

102•schappim•2h ago•69 comments

Back to the future: the story of Squeak, a practical Smalltalk written in itself [pdf] (1997)

http://www.vpri.org/pdf/tr1997001_backto.pdf
22•fanf2•6d ago•2 comments

Activeloop (YC S18) Is Hiring MTS – Back End Engineer

https://careers.activeloop.ai/?ashby_jid=d8c54147-5fc8-48ba-a097-a6ae046c42bd
1•davidbuniat•3h ago

Tixl: Open-source realtime motion graphics

https://github.com/tixl3d/tixl
114•nateb2022•4d ago•16 comments

A faster heart for F-Droid

https://f-droid.org/2025/12/30/a-faster-heart-for-f-droid.html
469•kasabali•20h ago•191 comments

Animated AI

https://animatedai.github.io/
252•frozenseven•5d ago•22 comments

Show HN: 22 GB of Hacker News in SQLite

https://hackerbook.dosaygo.com
619•keepamovin•22h ago•187 comments

OpenAI Is Paying Employees More Than Any Major Tech Startup in History

https://www.wsj.com/tech/ai/openai-is-paying-employees-more-than-any-major-tech-startup-in-histor...
21•megacorp•56m ago•9 comments

FediMeteo: A €4 FreeBSD VPS Became a Global Weather Service

https://it-notes.dragas.net/2025/02/26/fedimeteo-how-a-tiny-freebsd-vps-became-a-global-weather-s...
347•birdculture•20h ago•84 comments

A super fast website using Cloudflare workers

https://crazyfast.website
53•kilroy123•3d ago•45 comments

'Three norths' alignment about to end

https://www.spatialsource.com.au/three-norths-alignment-about-to-end/
51•altilunium•1w ago•22 comments

The rise of industrial software

https://chrisloy.dev/post/2025/12/30/the-rise-of-industrial-software
144•chrisloy•6h ago•119 comments

Readings in Database Systems (5th Edition) (2015)

http://www.redbook.io/
119•teleforce•13h ago•11 comments

Honey's Dieselgate: Detecting and tricking testers

https://vptdigital.com/blog/honey-detecting-testers/
307•AkshatJ27•17h ago•117 comments

A Vulnerability in Libsodium

https://00f.net/2025/12/30/libsodium-vulnerability/
307•raggi•22h ago•42 comments

Odin: Moving Towards a New "core:OS"

https://odin-lang.org/news/moving-towards-a-new-core-os/
103•ksec•5d ago•58 comments

Loss32: Let's Build a Win32/Linux

https://loss32.org/
317•akka47•1d ago•408 comments

Drugmakers raise US prices on 350 medicines despite pressure

https://www.reuters.com/business/healthcare-pharmaceuticals/drugmakers-raise-us-prices-350-medici...
10•JumpCrisscross•38m ago•1 comments

Non-Zero-Sum Games

https://nonzerosum.games/
415•8organicbits•1d ago•184 comments

OpenAI's cash burn will be one of the big bubble questions of 2026

https://www.economist.com/leaders/2025/12/30/openais-cash-burn-will-be-one-of-the-big-bubble-ques...
437•1vuio0pswjnm7•17h ago•618 comments

No strcpy either

https://daniel.haxx.se/blog/2025/12/29/no-strcpy-either/
240•firesteelrain•1d ago•125 comments
Open in hackernews

A super fast website using Cloudflare workers

https://crazyfast.website
53•kilroy123•3d ago

Comments

Terretta•11h ago

  Speed:
  74ms
  241ms
… LOL …

These 30 ms and 4 ms numbers were typical Apache to Netscape from MAE East and MAE West in 1998. Twenty five years and orders of magnitude more computing later? Same numbers.

usrnm•2h ago
I know, right? Almost 30 years and no progress in the speed of light? What are all these engineers even doing?
nrhrjrjrjtntbt•2h ago
Right right! Like we used to have concord back in the day and we are just getting slower innit.
kenonet•2h ago
For real
davidmurdoch•2h ago
But now it's that fast from almost everywhere on the planet, with nearly zero effort from the developer. We've been limited by light speed here, not compute.
gnz11•1h ago
I get 381ms/401ms on first load and not the claimed ~30ms. I'm not really sure what the point is here though. CDNs and browser cache headers work? Static sites are fast to paint?
davidmurdoch•1h ago
Yeah, I'm not seeing fast uncached times either. I usually hit Cloudflare's Miami datacenter, which is only about 200 miles and very low latency. But I'm seeing 200+ms on this site right now.
Aurornis•46m ago
I also got initial load times in that range.

The site should be faster, though. I’ve had a small CF workers project that works correctly with quick load times.

PunchyHamster•1h ago
nah, most sites are fat enough that both bandwidth and compute is the limit.

Getting it closer can save you 50-150ms, but if whole load takes 1s+ that's minuscule

davidmurdoch•1h ago
I only meant in this example. I agree, sites in general are fat.
ivanjermakov•1h ago
Not to mention that device count went up million fold.
davidmurdoch•1h ago
Great point!
weird-eye-issue•1h ago
Physics. It's literally just physics.

And with Workers they're accessible from hundreds of locations around the world so you can get this sort of speed from almost anywhere.

neogodless•1m ago
Speed: 350ms 1330ms

Is the site getting slower?

est•2h ago
I believe CF Page is faster.
mpeg•2h ago
CF pages is built on top of workers, you can serve static html assets from either of them too.
freetonik•2h ago
My blog directory/search engine [1] runs on Cloudflare workers as well. I was able to get pretty good results, too. For example, the listing of 1200+ blogs [2], each with 5 latest posts, loads in ~500ms. A single post with a list of related posts, loads in ~200ms. Yeah, it's still a lot, but it includes all the normal web app logic like auth middlewares, loading user settings, and states; everything is rendered server-side, no rich frontend code (apart from htmx for a couple of buttons to make simple one-off requests like "subscribe to blog" or "add to favorites"). A static page (like /about) usually loads in ~100ms.

This is a bit stochastic because of regions and dynamic allocation of resources. So, e.g. if you're the first user from a large georgraphic region to visit the website in the last several hours, your first load will be longer.

My other project (a blog platform) contains a lot of optimizations, so posts [3] load pretty much as fast as that example from the thread, i.e. 60-70ms.

1. https://minifeed.net/

2. https://minifeed.net/blogs

3. https://rakhim.exotext.com/but-what-if-i-really-want-a-faste...

aleksandrm•2h ago
Is this real?
Brajeshwar•1h ago
This is interesting and need to look into.

I decided to go check my website’s PageSpeed and I do have a 100/100/100/100 with pretty lots of content on the homepage including 6 separate thumbnails.

My site is on a straight path, no tricks — Github Pages Served to the Internet by Cloudflare.

jasoncartwright•1h ago
Yeah, it's really quick because there is pretty much nothing on it
amosWeiskopf•22m ago
I agree. Not impressed, frankly. Cloudflare workers is just even-more localized CDN, and the benefit is so tiny that it's not worth the investment nor maintenance costs. (I wrote extensively about this non-thing here: https://wskpf.com/takes/you-dont-need-a-cdn-for-seo). My site (https://wskpf.com), which has way more elements and, err, stuff, loads in 50ms, and unless you are superman or an atomic clock, you wouldn't care. same lighthouse scores as this one, but with no CDN nor cloudflare workers, and it actually has stuff on it.
PunchyHamster•1h ago
One time I decided to check how much faster really you can go while still getting decent usability out of "simple blog platform" type of webapp.

End result, written in go, did around 80-200us to generate post page and 150-200us (on cheap linode VPS... probably far faster on my dev machine) for index page with a bunch of posts.

Core was basically

* pre-compile the templates

* load blogpost into RAM, pre-compile and cache the markdown part

cache could be easily kicked off to redis or similar but it's just text, there is no need

Fun stuff I hit around:

* runtime template loading takes a lot just for the type-casting; the template framework I used was basically thin veneer over Go code that got compiled to Go code when ran

* it was fast enough that multiple Write() vs one was noticeable on flame graph

* smart caching will get you everywhere if you get cache invalidation right, making the "slow" parts not matter; unless you're running years of content and gigabytes of text you probably don't want to cache it anywhere else than in RAM or at the very least have over-memory cache be second tier.

The project itself was rewrite of same thing that I tried in Perl(using Mojolicious) and even there it achieved single digit ms.

And it feels so... weird, using webpage that just reacts with speed that the well-written native app has. Whole design process was going against the ye olde "don't optimize prematurely" and it was complete success, looking at performance in each iteration of component paid off really quickly. We got robbed of so much time from badly running websites.

cuu508•1h ago
> First visit: ~30ms. Real JavaScript executes at the edge.

It appears to have static content. Why does it need any JS at all?

ramon156•1h ago
Because OP let an LLM generate the text and couldn't be bothered to measure :)
jakelazaroff•1h ago
"At the edge" means "on a server located close to where you are". It's used to serve the HTML.

Looks like the only JavaScript running on the client is for installing the service worker and some Cloudflare tracking junk.

cuu508•1h ago
Right, but any old CDN can do that. Why does it need CF workers?
aprilnya•1h ago
Workers doesn’t require JS to serve static content though. You upload it as a static asset and it does it for you.
bayesnet•49m ago
Thank goodness it’s real JavaScript and not that knockoff js unscrupulous vendors are using to cut costs
efortis•1h ago
another trick is adding speculation rules on MPA sites. so when you hover over a link the page gets prerendered. For example, my initial page takes ~80ms, but navigating to other pages take 20ms

    prerender: [
      {
         where: { href_matches: '/*' },
         eagerness: 'moderate'
      }
    ]

That doesn't work on Safari, FF, and Brave, but you could do something like this:

https://github.com/ericfortis/mockaton/blob/main/www/src/_as...

chmod775•1h ago
Most adblockers/privacy extensions disable this.

uBlock Origin does it by default for instance.

efortis•1h ago
Do they block <link rel=prefetch> completely?

On Brave, the workaround on that linked snippet bypasses their blocking.

oefrha•1h ago
> ~2.5KB Brotli Smaller than most images.

Brotli is so 2024. Use zstd. (73.62%, I know. Slightly worse compression ratio, I know that too.)

1317•1h ago
well yes alright but it would be more impressive if there was actually something interesting there to see
doublerabbit•1h ago
"A super fast static website using Cloudflare workers"

Add imagery and see if you get the same results. I expect you could achieve such with Base64 but the caveat would be larger file sizes.

s_ting765•1h ago
The perfect lighthouse score might have changed since this was last updated. Am seeing 97% on accessibility.
predkambrij•41m ago
Speed: 217ms 289ms

I have 5G network :)

Also, heard multiple times that edge network can be worse, because if you're low prio and other part of globe is not busy, you get it routed in worst possible way.

liveoneggs•35m ago
These are not impressive numbers and, obviously, browser cache is fast.

Pretty much any small payload/non-javascript site is going to render very quickly (and instantly from cache) making SSL time be the long pole.

Alifatisk•32m ago
The site is indeed instant, those performance tricks does work (inline everything, botli compression, cache, edge network like cdn), BUT the site is also completely empty, it shows nothing except a placeholder.

Things can easily change when you start adding functionalities. One site I like to visit to remind myself of how fast usable websites can be, is Dlangs forum. I just navigate around to get the experience.

https://forum.dlang.org

Aurornis•24m ago
> One site I like to visit to remind myself of how fast usable websites can be, is Dlangs forum. I just navigate around to get the experience

Interestingly, for me each page load takes a noticeably long delay. Once it starts loading all of the content snaps in almost at once. It’s slower to get there than the other forums I visit though.

RestartKernel•25m ago
Speed:

- 3942ms

- 4281ms

Guess it depends on your region. This is from East-Asia.

meling•25m ago
Wish more pages were as fast as this, despite this site’s simplicity… In particular GitHub could really benefit from less bloat and faster rendering.
JodieBenitez•23m ago
It's not fast.
dontlaugh•23m ago
Over 800ms is not even a little fast. I’m on WiFi to ADSL, lights static websites are way faster than that.
yuvadam•14m ago
For static content this isn't fast.

For a dynamic service, well.. maybe implement something of interest and then we can discuss.

onion2k•10m ago
Getting a site to load quickly isn't that difficult from a technical perspective. You just need to strip out everything that slows it down. If you can deliver a page of HTML and inlined CSS that renders without JS or images then your site will be fast (or at least it'll be perceived as fast, which is fine.) So long as you're using some fairly reputable hosting infrastructure (AWS, Azure, Google, etc), and if you're rendering on the server you're not doing silly things on the hot path, then you don't need to worry about speed.

The hard part when it comes to site optimization is persuading various stakeholders who want GTM, Clarity, Dynatrace, DataDog, New Relic, 7 different ad retargeters, Meta, X, and probably AI as well now that a fast loading website is more important than the data they get from whichever of those things they happen to be interested in.

For any individual homepage where that stuff isn't an issue because the owner is making all the decisions, it's fair to say that if your site loads slowly it's because you chose to make it slow. For any large business, it's because 'the business' chose to make it slow.