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Building a web server in aarch64 assembly to give my life (a lack of) meaning
a static http server in aarch64 assembly
New
The latest blog posts to take off on Hacker News. 518 posts.
302
The Serial TTL connector we deserve
Goodbye dangling Dupont pins, hello Julet E-Bike connector. I have them now everywhere, from my router to my servers.
303
How Cloudflare responded to the “Copy Fail” Linux vulnerability
When a critical Linux kernel privilege escalation was publicly disclosed, Cloudflare's security and engineering teams detected, investigated, and mitigated the threat across our global fleet, confirming zero customer impact and no malicious exploitation.
304
Idempotency is easy until the second request is different
Idempotency is not just an HTTP header or a key lookup. This article covers the failure cases that bite real APIs: different requests with the same key, concurrent retries, partial success, downstream uncertainty, response replay, expiry, and duplicate message handling.
305
Diskless Linux boot using ZFS, iSCSI and PXE
Diskless Linux Boot
306
Setting up a Sun Ray server on OpenIndiana Hipster 2025.10
fresh OI install, clean slate, let's see how well the updated OI Sun Ray support works
307
How OpenAI delivers low-latency voice AI at scale
How OpenAI rebuilt its WebRTC stack to power real-time Voice AI with low latency, global scale, and seamless conversational turn-taking.
308
How fast is a macOS VM, and how small could it be?
Latest Geekbench performance figures for macOS VMs, and testing of how few cores and how little memory is really needed: could you run a macOS VM usefully on a MacBook Neo?
309
Why are there both TMP and TEMP environment variables? (2015)
Parallel evolution.
310
Discovering hard disk physical geometry through microbenchmarking (2019)
Modern hard drives store an incredible amount of data in a small space, and are still the default choice for high-capacity (though not highest-performance) storage. While hard drives have been around since the 1950s, the current 3.5″ form factor (actually 4″ wide) appeared in the early 1980s. Since then, the capacity…
311
Tar Files Created on macOS Display Errors When Extracting on Linux (2024)
tar.gz files seem to include extra files starting with ._. When these are extracted on Linux, a bunch of errors are displayed.
312
Virtualisation on Apple Silicon Macs is different
Virtualising macOS, Linux and Windows on Intel Macs has been relatively straightforward, and device support left to the developer. That won’t work for Apple silicon Macs. This explains what h…
313
Linux 7.0 Broke PostgreSQL: The Preemption Regression Explained
Linux 7.0 delivered roughly half the throughput of Linux 6.x on the same hardware and workload.
314
CJIT: C, Just in Time
Run, compile, and link C programs instantly with CJIT.
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Networking changes coming in macOS 27
We are under warning that macOS 27 is likely to remove support for AFP, and lately some additional requirements for connection to certain servers. This explains how these could affect you.
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Asahi Linux Progress Linux 7.0
Porting Linux to Apple Silicon
318
Mo RAM, Mo Problems (2025)
As a retro-computer enthusiast, it seems that parts are either insanely expensive or dirt cheap. If the first case has obvious problems, the second can also lead to issues.
319
Familiarity is the enemy: On why Enterprise systems have failed for 60 years
My thoughts on why enterprise knowledge systems have failed for sixty years, and what might finally replace them. A couple of weeks ago I demoed one part of what I have been building to a senior exec at a global enterprise - someone who had been asked to lead and guide
320
An update on recent Claude Code quality reports
We traced recent reports of Claude Code quality issues to three separate changes. Here's what happened, what we fixed, and what we're changing.
321
I am building a cloud
Today is fundraising announcement day . As is the nature of writing for a larger audience, it is a formal, safe announcement. As it should be. Writing must necessarily become impersonal at scale. But I would like to write something personal about why I am doing this. What is the goal of building exe.dev ? I am already…
322
Columnar Storage Is Normalization
Something I didn't understand for a while is that the process of turning row-oriented data into column-oriented data isn't a totally bespoke, foreign concept...
323
XOR'ing a register with itself is the idiom for zeroing it out. Why not sub?
Somehow xor became the most popular version.
324
What async promised and what it delivered
The async/await saga is a story where each chapter solves the previous chapter's worst problem while introducing new structural costs. The sequential syntax that made async code readable also obscures the thing that matters: which operations actually depend on each other.
325
Theseus, a Static Windows Emulator
An new old approach to emulation.
326
Windows Server 2025 Runs Better on ARM
My personal website and blog
327
Zero-Copy GPU Inference from WebAssembly on Apple Silicon
A WebAssembly module's linear memory can be shared directly with the Apple Silicon GPU: no copies, no serialization, no intermediate buffers. Here's how the zero-copy chain works, what we measured, and what it enables for stateful AI inference.
328
Optimizing Ruby Path Methods
Back in November last year, I started a new job at Intercom, and one of the first projects I got to work on was improving the Intercom monolith CI with some of my new colleagues.
329
Running a Minecraft Server and more on a 1960s UNIVAC Computer
18 bit registers, 90kb of memory, ones’ complement, powered by RISC-V.
330
A simplified model of Fil-C
I've seen lots of chatter about Fil-C recently, which pitches itself as a memory safe implementation of C/C++. You can read the gritty details of how this is achieved, but for people coming across it for the first time, I think there is value in showing a simplified version, as once you've understood the simplified…