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NEON is the new black: fast JPEG optimization on ARM servers
Cloudflare's jpegtran implementation was optimized for Intel CPUs. Now that we intend to integrate ARMv8 processors, new optimizations for those are required.
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 80,932 posts.
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New research indicates ‘Unicorns’ are overvalued
New research examines fair market value of startups worth over $1 billion and finds huge discrepancies in their purported worth.
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How a fix in Go 1.9 sped up our Gitaly service by 30x
After noticing a worrying pattern in Gitaly's performance, we uncovered an issue with fork locking affecting virtual memory size. Here's how we figured out the problem and how to fix it.
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Using GPT3, Supabase and Pinecone to automate a personalized marketing campaign
tldr; With GPT-3, Supabase, Pinecone, and Klaviyo, I built a semantic embeddings search that saved hundreds of hours of manual work for my girlfriends skincare brand ( Oliver Care ).
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Nine – seemingly impossible C64 demo
Nine is a small, seemingly impossible C64 demo that I released at Fjälldata 2025.
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Designing an Ethernet Switch ASIC
Designing the world's first open source Ethernet switch ASIC. An unmanaged cut-through 3-port 100Mbps switch fabbed on Global Foundries 180 nm.
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CMS Trap
Avoid architectural premature optimization
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Category Theory Illustrated – Orders
Given a set of objects, there can be numerous criteria, based on which to order them (depending on the objects themselves) — size, weight, age, alphabetical order etc.
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How to make a fast dynamic language interpreter
This post is about optimizing an extremely simple AST-walking interpreter for a dynamic language called Zef that I created for fun to the point where it is competitive with the likes of Lua, QuickJS, and CPython.
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Pricing Principles
Articles and Podcasts on Customer Service, AI and Automation, Product, and more.
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Flappy Bird implemented in TypeScript types
The ultimate type-level trickery
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A Clojure Crash Course
It’s time to learn how to actually do things with Clojure! Hot damn! Although you’ve undoubtedly heard of Clojure’s awesome concurrency support and other stupendous features, Clojure’s most salient characteristic is that it is a Lisp. In this chapter, you’ll explore the elements that compose this Lisp core: syntax…
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My Custom CSS Reset
I have a set of baseline CSS styles that come with me from project to project. In the past, I'd use a typical CSS reset, but times have changed, and I believe I have a better set of global styles!
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Faster interpreters in Go: Catching up with C++
A novel technique for implementing dynamic language interpreters in Go, applied to the Vitess SQL evaluation engine
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Poor Man's Polaroid
Hand-made Lights, Gadgets & DIY Electronics2026252 points56 commentsLife, Learning & Writing details
How to build a poor man's Polaroid camera - a DIY instant camera project with parts, assembly and photos.
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How to join a team and learn a codebase (2020)
I have switched teams more often than I have had to implement an AVL tree, and you can guess which one of those two was taught in school. I wish someone had taught me how to join a new team! While learning a new codebase can be daunting, I've found a few things that work for me.
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A deep dive into Linux's new mseal syscall
If you love exploit mitigations, you may have heard of a new system call named mseal landing into the Linux kernel’s 6.10 release, providing a protection called “memory sealing.” Beyond notes from the authors, very little information about this mitigation exists. In this blog post, we’ll explain what this syscall is…
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Planets in the Fourth Dimension
You probably that planets go around the sun in elliptical orbits. But do you know why? In fact, they’re moving in circles in 4 dimensions. But when these circles are projected down to 3-dimen…
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Startup Metrics
We have the privilege of meeting with thousands of entrepreneurs every year, and in the course of those discussions are presented with all kinds of numbers, measures, and metrics that illustrate the promise and health of a particular company. Sometimes, however, the metrics may not be the best gauge of what’s actually…
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Ford Tries to Shut Down Independent Repair Tool with Copyright
At EFF, we think people ought to be able to understand how their devices work and repair them without asking permission of the manufacturer. We also think independent repair companies should to be able to compete with manufacturers in the aftermarket. Simply put, you should be able to fix your...