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Behind the scenes of Bun Install
Learn how Bun is able to cut install times by up to 25×. Bun skips Node.js's overhead with direct system calls, cache-friendly data layouts, OS-level copy-on-write, and full-core parallelism.
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The latest blog posts to take off on Hacker News. 1,748 posts.
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The rise of async AI programming
The workflow that's changing how software gets built.
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Defeating Nondeterminism in LLM Inference
Reproducibility is a bedrock of scientific progress. However, it’s remarkably difficult to get reproducible results out of large language models. For example, you might observe that asking ChatGPT the same question multiple times provides different results. This by itself is not surprising, since getting a result from…
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Performance Improvements in .NET 10
Take a tour through hundreds of performance improvements in .NET 10.
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A love letter to the CSV format (2024)
why people pretending CSV is dead are wrong
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Hypervisor in 1k Lines
Write your first hypervisor from scratch, in 1K LoC.
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How Ruby executes JIT code
Where does JIT-compiled code live? How does Ruby switch between bytecode and native execution? Why does TracePoint slow everything down? This post answers the JIT questions most Ruby developers have but rarely see explained.
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Building a DOOM-like multiplayer shooter in pure SQL
CedarDB is a database system that delivers unmatched performance for transactions and analytics, from small writes to handling billions of rows. Built on cutting-edge research to power today’s tools and tomorrow’s challenges.
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A new experimental Go API for JSON
Go 1.25 introduces experimental support for encoding/json/jsontext and encoding/json/v2 packages.
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Claude now has access to a server-side container environment
Describe what you need and get back ready-to-use spreadsheets, documents, presentations, and PDFs instead of just text responses. Update: Now generally available for paid plans with net network and egress controls (October 21, 2025).
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How to use Claude Code subagents to parallelize development
Updated 2026-07-10 for the agent-teams era. Originally published September 2025. A subagent in Claude Code is a separate agent your session spawns to do a...
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Weird CPU architectures, the MOV only CPU (2020)
I like CPU architectures, especially weird, interesting and unusual ones. For example, the Intel iAPX 432 is still something I would love to play around with. Recently, I realized that a working CPU can be made with just a simple Move instruction. For this to work, everything needs to be memory mapped. The ALU…
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Strong Eventual Consistency – The Big Idea Behind CRDTs
Missing the Forest for the Sequence Trees.
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Writing code is easy, reading it isn't
Writing code is easy. Once you have a solution in mind, and have mastered the syntax of your favorite programming language, writing code is easy. Having an LLM write entire functions for you? Even eas
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A critique of package managers
n.b. This is a written version of a dialogue from a YouTube video: 2 Language Creators vs 2 Idiots | The StandupPackage managers (for programming languages) are evil.11 The term “evil” is being used partially hyperbolic to make a point.To start, I need to make a few distinctions between concepts a lot of programmers…
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The Helix Text Editor (2024)
I’ve come to accept that I’m just a sucker for shiny nerd things. I use Rust, despite never having had a professional reason to use it in my life. I switched to Linux in my student years and I’ve never looked back since, even though it constantly breaks and I can’t get my Bluetooth headphones to connect. I have a…
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Hashed sorting is typically faster than hash tables
Benchmarks and theoretical explanation of why and when hashed radix sort beats hash tables.
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Using Claude Code to modernize a 25-year-old kernel driver
As a bit of background, one of my hobbies is helping people recover data from old tape cartridges, such as QIC-80 tapes, which were a rather popular backup medium in the 1990s among individuals, small businesses, BBS operators, and the like. I have a soft spot for tape media; there’s something about the tactile…
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Formatting code should be unnecessary
and we knew this back in the 80s
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SQLite's Use of Tcl (2017)
The design of SQLite was inspired by the design of TCL, both in the way it handles datatypes and in the formatting of its source code. The index use case for SQLite was in a Tcl/Tk application for an industrial company. From its inception, SQLite has always depended heavily on TCL. These days, SQLite no longer uses…
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Some thoughts on personal Git hosting
As part of my ongoing (and somewhat futile) efforts to ReDeCentralise, I'm looking at moving my personal projects away from GitHub. I already have accounts with GitLab and CodeBerg - but both of those sites are run by someone else. While they're lovely now, there's nothing stopping them becoming as slow or AI-infested…
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Things you can do with a debugger but not with print debugging
People do or do not use debuggers for a variety of reasons. For one thing, they are hard to setup in many codebases. Second, you can’t use them when your application is running on remote environments (such as kuberenetes). So, anecdotally, I have seen way more people using Print/ log.Debug compared to a debugger.
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The Expression Problem and its solutions (2016)
The craft of programming is almost universally concerned with different types of data and operations/algorithms that act on this data [1] . Therefore, it's hardly surprising that designing abstractions for data types and operations has been on the mind of software engineers and programming-language designers since…
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The key to getting MVC correct is understanding what models are
stlab hosts modern, modular C++ algorithms and data structures.
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Using Claude Code SDK to reduce E2E test time
Best of both worlds: Building an AI gatekeeper that knows exactly which tests to run for your code changes
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Is OOXML Artifically Complex?
OOXML is less an act of sabotage than the continuation of a flawed, inelegant lineage.
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Default musl allocator considered harmful to performance
In a real world benchmark, the default musl allocator caused a 7x slowdown compared to other allocators. I recommend all Rust projects immediately swap to a different allocator in a musl environment.
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The key points of "Working Effectively with Legacy Code"
This book is a reference. Here's my summary of its salient points so you understand why it's so reco