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Caching is an abstraction, not an optimization
I've always been told that caching is a tool to make software faster. That, given some careful considerations to consistency, caching makes it so that when...
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The latest blog posts to take off on Hacker News. 80,837 posts.
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Cloudflare to introduce pay-per-crawl for AI bots
Pay per crawl is a new feature to allow content creators to charge AI crawlers for access to their content.
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Aging-related inflammation is not universal across human populations
Inflammation may not be a universal human experience, but a byproduct of industrialized lifestyles.
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About AI Evals
A guide to AI and LLM evals for engineers and product managers. Learn how to test AI systems, analyze failures, and improve retrieval, agents, and AI products.
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Writing Code Was Never the Bottleneck
LLMs make it easier to write code, but understanding, reviewing, and maintaining it still takes time, trust, and good judgment.
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Why email startups fail
Comprehensive analysis of email startup failures. Why most email companies fail, burn millions in VC funding, and shut down. Learn what actually works.
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The new skill in AI is not prompting, it's context engineering
Context Engineering is the new skill in AI. It is about providing the right information and tools, in the right format, at the right time.
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The original LZEXE (A.K.A. Kosinski) compressor source code has been released
Last year, I discovered that the Kosinski compression format is actually LZEXE, which was used for compressing DOS executables back in the 90s and the late 80s. Its developer catalogues three versi…
9339
End of an Era
I recall saying to one of my colleagues at Atari way back in 1982 that I wanted to make a game that would be genuine art. A year later I built a game that was my first experiment in that direction: Gossip. It was a ridiculously simple game in which a player attempted to win favor in a group by calling people and…
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The hidden JTAG in a Qualcomm/Snapdragon device’s USB port
Learn about JTAG and EUD
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Datadog's $65M/year customer mystery solved
The internet has been speculating the past few days on which crypto company spent $65M on Datadog in 2022. I confirmed it was Coinbase, and here are the details of what happened.
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Sony DTC-700 audio DAT player/recorder
What offers the convenience of a cassette tape, and the sound quality of a CD? Digital Audio Tape (DAT) does. So why wasn’t it more successful?
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Proton joins suit against Apple for practices that harm developers and consumers
Apple's anti-competitive App Store policies are gouging consumers, enabling censorship, and harming privacy-focused developers. We're joining a lawsuit to restore internet freedom.
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I write type-safe generic data structures in C
See my follow-up article: “A Fast, Growable Array With Stable Pointers in C” I write type safe generic data structures in C using a technique that I haven’t seen elsewhere1. It uses unions to associate type information with a generic data structure, but we’ll get to that. My approach works for any type of data…
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Donkey Kong Country 2 and Open Bus
You are seeing this because the administrator of this website has set up Anubis to protect the server against the scourge of AI companies aggressively scraping websites. This can and does cause downtime for the websites, which makes their resources inaccessible for everyone.
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Nano-engineered thermoelectrics enable scalable, compressor-free cooling
Researchers at Johns Hopkins APL, in collaboration with Samsung Research, have unveiled a breakthrough in solid-state cooling technology, doubling the efficiency of today’s commercial systems. Driven by the Lab’s patented nano-engineered thin-film thermoelectric materials and devices, this innovation paves the way for…
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There are no new ideas in AI, only new datasets
LLMs were invented in four major developments... all of which were datasets
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The story of Max, a real programmer
This is a story about Imagebin. Imagebin is the longest-lived software project that I still maintain. I'm the only user. I use it to host images, mainly to include in my blog, sometimes for sharing in other places. Imagebin's oldest changelog entry is dated May 2010, but I know it had already existed for about a year…
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Reverse Engineering Vercel's BotID
Vercel recently announced BotID, an anti-bot meant to protect against bots without requiring manual intervention. This post reverse-engineers the script and takes a peek inside.
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The provenance memory model for C
[The wordpress markdown inclusion does a very bad job, it seems, there have been some idiotic formatting errors. I hope that these are fixed, now.] A years-long effort led by Kayvan Memarian and Pe…
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LetsEncrypt – Expiration Notification Service Has Ended
Since its inception, Let’s Encrypt has been sending expiration notification emails to subscribers that have provided an email address to us via the ACME API. This service ended on June 4, 2025. The decision to end the service is the result of the following factors: Over the past 10 years more and more of our…
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Bought myself an Ampere Altra system
There are tools and there are toys. I bought myself a tool.
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Continuous Glucose Monitoring
Continuous glucose monitoring has been a thing for a while. It's a probe that sits just inside your body and measures blood glucose levels frequently. Obviously this is most useful for type 1 diabetics, who need to regulate their blood glucose manually.
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China Dominates 44% of Visible Fishing Activity Worldwide
A new Oceana analysis reveals the global scale of China’s visible fishing fleet
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Anticheat Update Tracking
A few years ago when I was into reverse engineering and binary analysis (and game modding), I did a lot of research into anticheats work. I was curious about tracking their updates, since that would allow me to:
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Error handling in Rust
A blog, mostly about programming
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Tools I love: mise(-en-place)
Once in a while you get introduced to a tool that instantly changes the way you work. For me, mise is one of those tools.
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