47 links from the last 24 hours · 4 November 2026
When your database CPU is at 100%, what is it actually doing? Memory stalls, CPU caches, and how radix partitioning makes GROUP BY faster.
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace, the wiki thing it's part of. Unfortunately you're using a browser (or client library) that my anti-crawler precautions consider suspicious…
Is now a good time to buy an LG TV? · Blog - MattBits
i’m a product engineer now. mostly i wait.
Laurie Voss says we’re all product engineers now. I pulled a few months of my own numbers to see what that actually looks like day to day. The code part is basically free. The waiting part is not, and the outer loop is where I spend my brain.
The software industry: annealing, but wrong
In recent months I've heard of several teams with an interesting policy: each pull request should be no more than a few files, and no more t...
Core to core latency depends on the physical address as well as the two cores: every transfer goes through the line's home on the mesh. How I found it, measured it, and used it.
I keep seeing more and more people talk about how ai is going to take our jobs, how fundamentally it has shifted knowledge work from something low-level and ...
The SaaS apocalypse started in October
Software stocks have mostly recovered. Stripe's benchmarks, across 181,000 subscription businesses, turned down in October.
Self-hosted GitHub Actions runners mean that when a job hangs, the first question is always the same: is it me or is it GitHub? So I built one page that answers it. runner-watch reads each runner's process tree and socket table through yeet's system graph, onc…
Almost every text editor on the web is built on contentEditable, an old browser API full of quirks. I built Tasfer on a 2D canvas instead, from the ground up, with peer-to-peer collaboration and no accounts. It is now open source.
Why ctxd: Let the agent grep | ctxd
No Complex Infrastructure and Costs. Why we are building open-source ctxd around regex search, source files and an agent’s ability to follow the evidence.
The release of TypeSafe’s Jev brought attention to so-called decision models. These models are designed to classify predefined choices quickly. Given information, a question and possible answers, decision models return a probability for each option. We use the…
Custom Voices With Qwen3-TTS
Cloning, designing and blending voices with Qwen3-TTS.
Once machines can talk forever, time spent stops being a proxy for value and starts being a symptom that something’s wrong.
After a year, my MacBook battery health is still 100%
AlDente Pro taught me why MacBook battery health management matters. I review charging limits, heat protection, calibration, and long-term plugged-in use to assess its value.
In robotics, price is basically actuator count. Stringman reaches an entire room with four motors, hanging its gripper from lines anchored in the ceiling corners. Working from above, it reaches floors too clutter…
High-Concurrency Crawler Optimization Notes - From 1 QPS to 10,000 QPS
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The one where the grim reaper has a web standard in sight.
Yesterday’s hot paper was Sparks of Weight-Space Programming: LLMs can natively read & write neural network weights by Rikiya Takehi, Jayden Teoh, Alex Zhang, and Omar Khattab. The paper (OK, …
Get the C# 15 Skill: https://dometrain.com/free/download-assets-union-types-are-finally-in-net-but-who-cares/ Hello, everybody. I'm Nick, and in this video, I want to talk about the brand new feature called Union Types (or Discriminated Unions by some) that w…
This video examines the amount of location information carried by inaudible background sounds, using the Doppler effect to locate a reference recording within ~100m, and only needing (in some cases) less 1-min of audio. This video raises awareness of these cap…
Postgres 19 is late, and it's AI's fault
Over the past decade, the timing of PostgreSQL major releases has become very predictable: no earlier than the middle of September, and no l...
The experiments that read raw weights and the ones that fix Qwen use completely different techniques.
How do you implement a random-access database when you don't have random-access external storage? - The Old New Thing
You just store it all in memory, in your own program.
GitHub - JiaFeiMiao-K-Cat/DiscImageStudio
Contribute to JiaFeiMiao-K-Cat/DiscImageStudio development by creating an account on GitHub.
A newspaper from Hacker News, refreshed every hour. Independent headlines, original sources.
I sent out the October edition of my sponsors-only monthly newsletter. If you are a sponsor (or start a sponsorship now) you can access it here. This month: The October …
The SEC Should Block Anthropic’s IPO to Protect the Public
If Anthropic goes public, workers, retail investors, and retirees will be left holding the bag when its bills come due, writes Matt Scherer.
Genius piece of OSINT by Colsto, who demonstrates how you can take almost imperceptible background noise of planes from a video soundtrack, figure out their Doppler curves, then cross reference …
Dawei Sun's personal website — writing on research, engineering, and ideas.
Just describe what you want. Get better at articulating your problem, and the solution you have in mind. I used to use Firefox, with a bunch of...
It’s only fair.
What divergent series, imaginary numbers, and the Langlands program suggest about the limits of our mathematical language.
Why consumption software still matters, why more software will be hackable, and why we still need software crafters.
A Decade of Kill Bugs
One latch per state. A Boolean circuit on each arrow.
A mathematical hypothesis about intelligence, cooperation, and the possibility of a shared civilization.
The US election could turn the country into chaos
Trump already tried to overturn one election he lost. On November 3, he’s likely to lose another one, badly. At this point it is obvious to almost everybody that the Republican Party, and thus Trump, is going to get smashed in the midterms. Chances are that bo…
Following a write through MongoDB replication and WiredTiger local durability.
De-tooling | David Amos | Author & Technical Writer
A reflection on AI, chairs, and our obsession with convenience.
Build Your Own LLM for Brazilian Jiu Jitsu
Discover how to build a custom LLM for Brazilian Jiu Jitsu (or your favorite hobby) using video instructionals, enhancing understanding and training experience.
Three months of running my own models on a MacBook, what it cost, and what it would cost on OpenRouter.
Single-Use Software
Mass-produced single-use plastics made out of code.
Access large language models from the command-line
You don’t need a Makefile. Whatever your use-case, there is a better tool. Makefiles are archaic technology, living on by force of inertia and...
I’m turning into a Project Manager.
I have this very distinct memory from the start of the AI era. I was on a flight from the US to the UK and I had purchased the on-board wifi, had my laptop on my lap, and a ChatGPT subscription under my belt.
Headless software doesn't mean getting rid of interfaces. It means separating the data and functionality from how we interact with it.