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New
The latest blog posts to take off on Hacker News. 21,817 posts.
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How memory maps (mmap) deliver faster file access in Go
Learn how memory maps (mmap) accelerate file I/O, reduce latency, and improve app performance in Unix and Go with real-world benchmarks.
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A bug that taught me more about PyTorch than years of using it
a loss plateau that looked like my mistake turned out to be a PyTorch bug. tracking it down meant peeling back every layer of abstraction, from optimizer internals to GPU kernels.
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How I stopped worrying and started loving the Assembly
Or why robots are playing DOOM now
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Context engineering is sleeping on the humble hyperlink
The dream of hypermedia can come to fruition in a world where clients can not only parse, but navigate with intent.
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Casey Muratori: I can always tell a good programmer in an interview
How to reliably understand if a candidate is a good programmer, inspired by Casey Muratori
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I spent a year making an ASN.1 compiler in D
In this post I’ll just rambling about ASN.1; parts of the compiler implementation, and some of the tool’s output rather than the tool itself as its still too WIP to really advertise on its own yet.
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Harder, Better, Faster, Stronger Version of Uber H3 in Rust
Since this article will probably have more reach than my usual rambling, It'll be written in English (but let's not make a habit of it).
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Corrosion
Corrosion is distributed service discovery based on Rust, SQLite, and CRDTs.
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PyTorch Monarch
We now live in a world where ML workflows (pre-training, post training, etc) are heterogeneous, must contend with hardware failures, are increasingly asynchronous and highly dynamic. Traditionally, PyTorch has relied...
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Programming with Less Than Nothing
Lambda calculus is for wimps. Real programmers use combinatory logic.
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Clojure Zippers (2021)
In this article, we will discuss zippers in the Clojure language. These are an unusual way to work with collections. Using a zipper, you can traverse a data structure arbitrarily and modify its content as well as search in it. A zipper is a powerful abstraction that pays off over time. However, it is not as…
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Why SSA?
If you’ve read anything about compilers in the last two decades or so, you have almost certainly heard of SSA compilers , a popular architecture featured in many optimizing compilers, including ahead-of-time compilers such as LLVM, GCC, Go, CUDA (and various shader compilers), Swift 1 , and MSVC 2 , and just-in-time…
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Django 6.0 beta 1 released
Posted by Natalia Bidart on Oct. 22, 2025
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I see a future in jj
In December of 2012, I was home for Christmas, reading Hacker News. And that’s when I saw “ Rust 0.5 released ."" I’m a big fan of programming languages, so I…
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SATisfying Solutions to Difficult Problems
This post covers the same material as my !!Con 2024 talk , for which the slides are here .
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Cryptographic Issues in Cloudflare's Circl FourQ Implementation (CVE-2025-8556)
The vulnerabilities we found in Cloudflare's CIRCL FourQ implementation: invalid-point attacks, Edwards-curve edge cases, and the disclosure that fixed them.
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Designing software for things that rot
Building an iOS fermentation tracker with HACCP-style decision trees for home charcuterie, salami curing, and fermented foods - food safety without internet strangers.
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Magit Is Amazing
I was reading a post about Jujutsu version control system the other day and that just made me realize how awesome is Magit!
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Build your own database
A step-by-step guide to building a key-value database from scratch.
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Language Support for Marginalia Search
One of the big ambitions for the search engine this year has been to enable searching in more languages than English, and a pilot project for this has just been completed, allowing experimental support for German, French and Swedish. These changes are now live for testing, but with an extremely small corpus of…
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Should LLMs just treat text content as an image?
Several days ago, DeepSeek released a new OCR paper. OCR, or “optical character recognition”, is the process of converting an image of text — say, a scanned…
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Building a message queue with only two UNIX signals
Have you ever asked yourself what if we could replace any message broker with a very simple one using only two UNIX signals? Well, I'm not surprised if you
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The death of thread per core
Programming language async runtimes are very focused on handling asynchronous, possibly long running tasks, that might yield for a variety of reasons, that...
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Claude Code on the web
Today, we're introducing Claude Code on the web, a new way to delegate coding tasks directly from your browser. Now in beta as a research preview, you can assign multiple coding tasks to Claude that run on Anthropic-managed cloud infrastructure, perfect for tackling bug backlogs, routine fixes, or...
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Getting DeepSeek-OCR working on an Nvidia Spark via brute force with Claude Code
DeepSeek released a new model yesterday: DeepSeek-OCR, a 6.6GB model fine-tuned specifically for OCR. They released it as model weights that run using PyTorch and CUDA. I got it running …
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BERT is just a single text diffusion step
A while back, Google DeepMind unveiled Gemini Diffusion, an experimental language model that generates text using diffusion. Unlike traditional GPT-style models …
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Forth: The programming language that writes itself
An exploration of the evolution and meaning of the Forth programming language and its context in history.
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