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Topics /
Software Engineering
The most popular blog posts about software engineering on Hacker News. 1,747 posts.
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Archimedes – A Python toolkit for hardware engineering
A great engineer (controls being no exception) has to be part hacker, part master craftsman.
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You need much less memory than time
Just as I was complaining that we haven't seen many surprising breakthroughs in complexity recently, we get an earthquake of a result to st...
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A year of Rust in ClickHouse
This story is about how ClickHouse supports Rust components in the C++ code base and the challenges we had to overcome.
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Offline-First Landscape – 2025
Building Marco meant committing to IMAP and cross-platform support. Here is why offline-first proved far harder than we expected, and what we learned.
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UUIDv7 Comes to PostgreSQL 18
PostgreSQL 18 adds native support for UUIDv7. A timestamp-based UUID variant that plays nicely with btree indexes. Here's what that means for you.
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Highly efficient matrix transpose in Mojo
In this blogpost I will step by step show you how to implement a highly efficient transpose kernel for the Hopper architecture using Mojo. The best kernel a...
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In-Memory Filesystems in Rust
I’ve been working on a CLI tool recently, and one of the things it does is manage files on disk. I have written a lot of file management tests for Bundler, and the two biggest reasons that the Bundler test suite is slow are exec and fstat. Knowing that, I thought I would try to get out ahead of the slow file stat…
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Making PyPI's test suite faster
See how we slashed PyPI’s test suite runtime from 163 to 30 seconds. The techniques we share can help you dramatically improve your own project’s testing performance without sacrificing coverage.
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Solving First Order Differential Equations with Julia
In this tutorial, we will learn about solving Differential Equations with Julia. Differential Equations are everywhere in Science and Engineering problems. And, being able to solve Differential Equations using computers is very convenient. We will use the DifferentialEquations.jl package for solving Differential…
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V8 Garbage Collector
wingolog: article: the last couple years in v8's garbage collector
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Effective harnesses for long-running agents
How an initializer agent and an incremental coding agent help the Claude Agent SDK make steady progress across many context windows.
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CVE 2025 31200
Background On April 16, 2025, Apple released a patch for a bug in CoreAudio which they said was “Actively exploited in the wild.” This flew under the radar a bit. Epsilon’s blog has a great writeup of the other bug that was presumably exploited in this chain: a bug in RPAC. The only thing out there that I am aware of…
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A visual demo of Ruby's lazy enumerator
Where you get to play with an interactive demo to visualize how Enumerator::Lazy helps avoid unnecessary work
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What’s New in PostgreSQL 18 – a Developer’s Perspective
PostgreSQL 18 features that change how application developers write and ship code.
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Baking the Y Combinator from Scratch
EDIT: Part 2 is up! It's a pedagogical pet peeve of mine when technical concepts are simply listed in their fully developed state, with little in the way of motivation, derivation, or historical context. This, I think, is like publishing a cookbook filled with beautiful pictures of cakes, but
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Unix "find" expressions compiled to bytecode
In preparation for a future project, I was thinking about at the unix find utility . It operates a file system hierarchies, with basic operations selected and filtered using a specialized expression language. Users compose operations using unary and binary operators, grouping with parentheses for precedence. find may…
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The need for memory safety standards
For decades, memory safety vulnerabilities have been at the center of various security incidents across the industry, eroding trust in technology and costing billions. T…
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Rust’s worst feature
There are several aspects of Rust that I’m not particularly fond of but the one that takes the cake is core::io::BorrowedBuf which I despise with passion. It’s a nightly feature which puts in question my extreme emotions about it. On the other hand it means there’s time to stop it from getting stabilised and figure…
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Why is Windows still tinkering with critical sections? – The Old New Thing
The critical section may be an old dog, but it's still learning new tricks.
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A tail calling interpreter for Python (already landed in CPython)
It’s been nearly four years since I published Parsing Protobuf at 2+GB/s: HowI Learned To Love Tail Calls inC.In that article, I presented a technique I co-d...
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Writing C for Curl
It is a somewhat common question to me: how do we write C in curl to make it safe and secure for billions of installations? Some precautions we take and decisions we make. There is no silver bullet, just guidelines. As I think you can see for yourself below they are also neither strange nor … Continue reading Writing…
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Modern C
This new edition has been the occasion to overhaul the presentation in many places, but its main purpose is the update to the new C standard, C23 . The goal was to publish this new edition of Modern C at the same time as the new C standard goes through the procedure of ISO publication. The closest approximation of the…
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There's Math.random(), and then there's Math.random() (2015)
V8’s Math.random implementation now uses an algorithm called xorshift128+, improving the randomness compared to the old MWC1616 implementation.
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Typst's Math Mode Problem
Typst's math mode has a strange precedence problem that most people using it will run into at some point.
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An Introduction to Solid Queue for Ruby on Rails
Solid Queue is Rails’ default background job backend: jobs live in your database, no Redis. See how jobs, workers, and the supervisor work under the hood.
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How is Ultrassembler so fast?
Ultrassembler is a superfast and complete RISC-V assembler library that I'm writing as a component of the bigger Chata signal processing project.
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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…
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