The latest blog posts to take off on Hacker News. 21,819 posts.
This post was originally given as a talk for Friendly.rb and Kaigi on Rails. The slides are also available. Between Litestack and the Rails 8 trifecta of Solid Cable, Solid Cache, and Solid Queue, it’s easier than ever to spin up a Rails app that doesn’t need a database service, or a redis service, or a file storage…
A breakdown of Claude's memory implementation, how it differs from ChatGPT, and what these opposite approaches reveal about each company's philosophy.
Breed unique melodies with genetic algorithms! Explore Conway's musical life and cultural evolution patterns. Interactive AI music lab
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.
The workflow that's changing how software gets built.
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…
Take a tour through hundreds of performance improvements in .NET 10.
why people pretending CSV is dead are wrong
Write your first hypervisor from scratch, in 1K LoC.
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.
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.
Go 1.25 introduces experimental support for encoding/json/jsontext and encoding/json/v2 packages.
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).
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...
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…
Missing the Forest for the Sequence Trees.
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
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…
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…
Benchmarks and theoretical explanation of why and when hashed radix sort beats hash tables.
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…
and we knew this back in the 80s
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…
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…
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.
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…
stlab hosts modern, modular C++ algorithms and data structures.
Best of both worlds: Building an AI gatekeeper that knows exactly which tests to run for your code changes
