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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.
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 696 posts.
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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
395
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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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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Computers as I used to love them
File synchronization can be fun and painless if you don’t have to deal with corporate bullshit.
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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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Learn x86-64 assembly by writing a GUI from scratch
Most people think assembly is only to be used to write toy programs for learning purposes, or to write a highly optimized version of a specific function inside a codebase written in a high-level language.
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Anything can be a message queue if you use it wrongly enough
Xe Iaso's personal website.
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A single line of code made a 24-core server slower than a laptop
Imagine you wrote a program for a pleasingly parallel problem, where each thread does its own independent piece of work, and the threads don’t need to coordi...
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Reptar
We have a CPU mystery! We found a way to cause some processors to enter a glitch state where the normal rules don’t apply, but what does that mean…?
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Speed Is the Killer Feature
Teams consistently overlook speed. Instead, they add more features (which ironically make things slower). Products bloat over time and performance goes downhill.
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Achieving 11M IOPS and 66 GB/S IO on a Single ThreadRipper Workstation
TL;DR Modern disks are so fast that system performance bottleneck shifts to RAM access and CPU. With up to 64 cores, PCIe 4.0 and 8 memory channels, even a single-socket AMD ThreadRipper Pro workstation makes a hell of a powerful machine - if you do it right! Update 1: Since 2021, networks have gotten faster and now…
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UASP makes Raspberry Pi 4 disk IO 50% faster
You can view a video related to this blog post here: Does UASP make the Raspberry Pi faster?. A couple weeks ago, I did some testing with my Raspberry Pi 4 and external USB SSD drives. I found a USB 3.0 SSD was ten times faster than the fastest microSD card I tested. In the comments on the video associated with that…
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How Does Sqlite Work? (2014)
How does SQLite work? Part 1: pages!
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Booting Linux off of Google Drive
Competitiveness is a vice of mine. When I heard that a friend got Linux to boot off of NFS, I had to one-up her. I had to prove that I could create...
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MVCC – the part of PostgreSQL we hate the most (2023)
As much as Andy loves PostgreSQL, there is one part that is terrible and causes many headaches for people. Learn what it is and why it sucks.
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Ripgrep is faster than grep, ag, git grep, ucg, pt, sift (2016)
In this article I will introduce a new command line search tool, ripgrep , that combines the usability of The Silver Searcher (an ack clone) with the raw performance of GNU grep. ripgrep is fast, cross platform (with binaries available for Linux, Mac and Windows) and written in Rust .
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Elixir RAM and the Template of Doom
I will attempt to convince you, in two lines of code, that Elixir is more interesting than any programming language you’ve ever used.
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Weird architectures weren't supported to begin with
This post contains my own opinions, not the opinions of my employer or any open source groups I belong or contribute to.