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Gap between asm.js and native gets narrower with float32 optimizations
asm.js is a simple subset of JavaScript that is very easy to optimize, suitable for use as a compiler target from languages like C and C++. Earlier this year Firefox ...
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 1,232 posts.
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Transactionally Staged Job Drains in Postgres
Building a robust background worker system that leverages transactional isolation to never work a job too early, and transactional durability to never let one drop.
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The Definitive Guide on Win32 to NT Path Conversion (2016)
Posted by James Forshaw, path’ological reverse engineer.How the Win32 APIs process file pat...
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Async Rust vs RTOS showdown (2022)
It's time for another technical blog post about async Rust on embedded. This time we're going to pitch Embassy/Rust against FreeRTOS/C on an STM32F446 microcontroller.
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IPv4, IPv6, and a sudden change in attitude
A few years ago I wrote [_The World in Which IPv6 was a Good Design_](https://apenwarr.ca/log/20170810). I'm still proud of that article, bu...
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A Unikernel Firewall for QubesOS
QubesOS provides a desktop operating system made up of multiple virtual machines, running under Xen. To protect against buggy network drivers, the …
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FatELF: Universal Binaries for Linux (2015)
FatELF is a file format that embeds multiple ELF binaries for different architectures into one file. This is the Linux equivalent of what Mac OS X calls "Universal Binaries."
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ZeroMQ - Disconnects are Good for You
The hidden disconnects of ZeroMQ can be dangerous if you don’t write your application to work around them.
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A small Rust binary indeed (2022)
Can we make a Rust program that's as small as it's assembler equivalent?
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AVX-512 Mask Registers, Again
Taking a second look at the newly introduced mask registers, this time with the benefit of a SKX die shot from Fritzchens Fritz.
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Implementing strcmp, strlen, and strstr using SSE 4.2 instructions (2008)
Created 18 years ago by Peter Kankowski Last changed 17 years ago Contributors : Dap and Adam Messinger Filed under Low-level code optimization
702
Webkit - Introducing SquirrelFish Extreme
Just three months ago, the WebKit team announced SquirrelFish, a major revamp of our JavaScript engine featuring a high-performance bytecode interpreter.
703
Creepy Crawlies
You've probably heard me complain about the "AI crawlers" before, but now I actually have some hard numbers I can put up to show their im...
704
Architecture.md
If you maintain an open-source project in the range of 10k-200k lines of code, I strongly encourage you to add an ARCHITECTURE document next to README and CONTRIBUTING. Before going into the details of why and how, I want to emphasize that this is not another docs are good, write more docs advice. I am pretty sloppy…
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I use zip bombs to protect my server
The majority of the traffic on the web is from bots. For the most part, these bots are used to discover new content. These are RSS Feed readers, search engines crawling your content, or nowadays AI bo
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Extreme HTTP Performance Tuning
This post will walk you through the performance tuning steps that I took to serve 1.2 million JSON 'API' requests per second from a 4 vCPU AWS EC2 instance.
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Adobe to remove Flash Player from web site after December 2020
Adobe Flash Player End of Life general information
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The session you cannot take with you
Inference APIs are filling sessions with encrypted reasoning, hidden search results, opaque compaction, and encrypted subagent messages. A growing form of lock-in.
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Cloudflare outage on December 5, 2025
Cloudflare experienced a significant traffic outage on December 5, 2025, starting approximately at 8:47 UTC. The incident lasted approximately 25 minutes before resolution. We are sorry for the impact that it caused to our customers and the Internet. The incident was not caused by an attack and was due to…
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Megafail
In case you’ve been living under a rock the past few days, Kim Dotcom (of Megaupload infamy) has launched his new cloud storage site, Mega. Mega has an impressive sales pitch, promising secure cloud storage where only the user has the key to decrypt his or her files, and the encryption and decryption happens securely…
716
How Discord Stores Billions of Messages (2017)
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
717
Computers as I used to love them
File synchronization can be fun and painless if you don’t have to deal with corporate bullshit.
718
Building a BitTorrent client from the ground up in Go
What is the complete path between visiting thepiratebay and sublimating an mp3 file from thin air? In this post, we'll implement enough of the BitTorrent protocol to download Debian. Look at the [Source code](https://github.com/veggiedefender/torrent-client/) or skip to the [last…
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The August 17 outage
An update on the August 17 outage and the steps we're taking to improve reliability.
720
Firefox got faster for real users in 2023
We’ve been working hard on making Firefox even faster and we’re extremely happy to report that this has resulted in an improvement in speed.