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Always use [closed, open) intervals
fhur's blog
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The latest blog posts to take off on Hacker News. 6,153 posts.
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Why Twitter didn’t go down: From a real Twitter SRE
Twitter supposedly lost around 80% of its work force.
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More than you cared to know about PC fans
Fans, an active cooling element, move air in a system. Heat must be removed from the site of its production, and from the system as a whole. A fan increases heat convection with surrounding air via airflow. Air is at its highest pressure immediately in front of the fan, and at lowest pressure immediately behind it.
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Moving Away from UUIDs (2018)
If you need an unguessable random string (for a session cookie or access token, for example), it can be tempting to reach for a random UUID, which looks like this: 88cf3e49-e28e-4c0e-b95f-6a68a785a…
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MicroPython officially becomes part of the Arduino ecosystem
At Arduino we like to experiment with new technologies to figure out if we can use them to improve the tools we make for our users. We’ve recently been
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The Last Ridge Racer
Well, this is a bit of a roller coaster tale that I’ve been meaning to share for a while. Before we start, let’s take a trip into the history books to set the scene. In October 1993, Na…
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Building a BFT JSON CRDT
CRDTs are a family of data structures that are designed to be replicated across multiple computers without needing to worry about conflicts when people write data to the same place.
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Why CVE-2022-3602 was not detected by fuzz testing
So recently a very hyped memory corruption security vulnerability was discovered in the OpenSSL punycode parser. Some folks including Hanno ...
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How Precision Time Protocol is being deployed at Meta
Implementing Precision Time Protocol (PTP) at Meta allows us to synchronize the systems that drive our products and services down to nanosecond precision. PTP’s predecessor, Network Time Protocol (…
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Little languages are the future of programming
Little languages; what they are, why they matter and how they will shape the future of programming.
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The genius of binary space partitioning in Doom (2019)
A short history of the data structure that powered the classic first-person shooter.
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Betting on things that never change (2017)
Amazon launched 22 years ago this week.
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Semantic Search with SQLite
txtai is an all-in-one open-source AI framework for semantic search, LLM orchestration and language model workflows
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Spiral’s Homomorphic Encryption – Is This the Future of Privacy?
Find out how homomorphic encryption works and why it could be the future of (crypto) data privacy
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Criticizing Computers
Do you ever get really mad at your computer?
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AWS and Blockchain
This week saw the cancellation of the Australian Stock Exchange’s long-running effort to build a blockchain-based trading system. Which, oddly, has me thinking of 2016, when AWS decided not to make a strategic investment in blockchain, with my input a contributing factor. It felt like a good story while it was…
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DOS/4GW and Protected Mode (2021)
MS-DOS game programmers had to deal with several limitations. This article goes over some of these obstacles and explores how we used the DOS/4GW extender & protected mode to unleash the power of 32-bit DOS.
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You will never “fix it later”
Recently I approved a pull request from a colleague, that had the following description: “That’s a hacky way of doing this, but I don’t have time today to come up with a better im…
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The Modern Observability Problem
The observability problem - Why is the system exhibiting this behaviour?
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Disassembling an Amazon Blink Mini camera
I used Ghidra twice, so that means I'm officially an expert in reverse engineering
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While crypto bro scammed clients, reporters scammed readers
Before Bankman-Fried’s transition from financial genius to possible financial criminal, he received little scrutiny in the media.
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IRCv3 2022 Spec round-up
IRCv3 Development Community
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Hacker News Parody Thread (2013)
This page is intended to be a humorous parody of Hacker News . It is not in any way affiliated with Hacker News. The page's theme and layout are based on the original site. The usernames (with two exceptions) are intended to be fictitious.
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Torsors (2010)
When you first read about "torsors", they're bound to seem a bit too darn sophisticated for their own good. Mostly this is because nobody explains them very well. So, I want to convince you that they're actually very simple and natural. I'll do this by giving you three examples from physics:
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Planes are still decades away from displacing most bird jobs
Note: Parts of this essay were written by GPT-3, so it might contain untrue facts. Introduction Many of my friends are extremely excited by planes, rockets, and helicopters. They keep showing me videos of planes flying at enormous speed, rockets taking off from the ground while creating fiery infernos around them, and…