20 random bookmarks

2026-07-22

55.

Foundations — idlemachines

idlemachines.co.uk/courses/foundations

Start here if you're new to ML. In nineteen problems we'll get from dot products to a working training loop, all in NumPy. Implement the building blocks (sigmoid, softmax, cross-entropy, attention masks), then build a linear layer and work through the backwards passes that make training work.

2026-04-15

54.

Immutable Systems: NixOS + systemd-repart + systemd-sysupdate

x86.lol/generic/2024/08/28/systemd-sysupdate.html

When you build software for embedded devices (your Wi-Fi router or home automation setup on your Raspberry Pi), there is always the question how to build these images and how to update them.

2026-04-05

53.

Killing the ISP Appliance: An eBPF/XDP Approach to Distributed BNG

markgascoyne.co.uk/posts/ebpf-bng

An open-source, eBPF-accelerated BNG that runs directly on OLT hardware - eliminating expensive centralised appliances

2026-02-25

52.

Tracking NixOS option values and dependencies | oddlama's blog

oddlama.org/blog/tracking-options-in-nixos

There are thousands of options in NixOS, but as users, we usually only interact with a select few of them. Despite that, a huge amount of those options does influence the final result in some way. Have you ever wondered which of them were actually relevant for your specific system?

2025-11-18

48.

Patterns for Defensive Programming in Rust | corrode Rust Consulting

corrode.dev/blog/defensive-programming

[...] hard-learned patterns to write more defensive Rust code, learned throughout years of shipping Rust code to production. I’m not talking about design patterns here, but rather small idioms, which are rarely documented, but make a big difference in the overall code quality.

2025-08-27

47.

Inside Windows 3

www.xtof.info/inside-windows3.html

Windows 3 is often said to be just an UI on top of DOS. This article presents some of the inner side of Windows 3.x and will show that it is more ambitious and advanced than that.

2025-07-07

46.

Rewriting Kafka in Rust Async: Insights and Lessons Learned in Rust | Rex Wang

wangjunfei.com/2025/06/18/Rewriting-Kafka-in-Rust-Async-Insights-and-Lessons-Learned#Summary

Achieving high-performance asynchronous Rust projects transcends mere usage of the async/await syntax; it fundamentally relies on a deep understanding of the underlying task scheduling, lock optimization, and architecture design principles.

2025-01-22

35.

Building a tiny Linux from scratch

blinry.org/tiny-linux

Last week, I built a tiny Linux system from scratch, and booted it on my laptop!

2024-12-05

34.

Optimization adventures: making a parallel Rust workload 10x faster with (or without) Rayon | Blog | Guillaume Endignoux

gendignoux.com/blog/2024/11/18/rust-rayon-optimized.html

In a previous post, I’ve shown how to use the rayon framework in Rust to automatically parallelize a loop computation across multiple CPU cores.
In this post, I’ll first explain which profiling tools I used to chase optimizations, before diving into how I built a faster replacement of Rayon for my use case. In the next post, I’ll describe the other optimizations that made my code much faster. Spoiler alert: copying some data sped up my code!

2024-11-20

31.

Why I love Rust for tokenising and parsing

xnacly.me/posts/2024/rust-pldev

Macros, iterators, patterns, error handling and match make Rust almost perfect

2024-11-07

28.

Model Predictive Control in the browser with WebAssembly | garethx

garethx.com/posts/cart-pole-mpc

Commentary on software, robotics, and computer vision.

2024-10-12

26.

Dependency Management Data

dmd.tanna.dev

2024-09-19

24.

How to Build a Small Solar Power System

solar.lowtechmagazine.com/2023/12/how-to-build-a-small-solar-power-system

This guide explains everything you need to know to build stand-alone photovoltaic systems that can power almost anything you want.

2024-09-07

18.

About

www.braggoscope.com/about

Explore the In Our Time archive.

17.

Elixir Dev Environment With Nix Flakes

www.mathiaspolligkeit.com/elixir-dev-environment-with-nix-flakes

In a previous article, I described how to set use Nix and Niv to configure an Elixir dev environment. This setup can be simplified by using Nix flakes instead of Niv.

2024-09-02

15.

Timeseries Indexing at Scale - Artem Krylysov

artem.krylysov.com/blog/2024/06/28/timeseries-indexing-at-scale

2024-07-31

11.

Compiler Options Hardening Guide for C and C++

best.openssf.org/Compiler-Hardening-Guides/Compiler-Options-Hardening-Guide-for-C-and-C++.html

The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

10.

Build your own SQS or Kafka with Postgres

blog.sequinstream.com/build-your-own-sqs-or-kafka-with-postgres

We're Sequin, an open source message stream built on Postgres. We think Sequin's cool, but you don't need to adopt the project to get started with streaming in Postgres. In fact, you can turn Postgres into a basic queue/stream pretty easily. Below, we share what we've learned so you

2024-07-28

8.

Windows Security best practices for integrating and managing security tools | Microsoft Security Blog

www.microsoft.com/en-us/security/blog/2024/07/27/windows-security-best-practices-for-integrating-and-managing-security-tools

We examine the recent CrowdStrike outage and provide a technical overview of the root cause.

2024-06-09

1.

So You Want To Build A Browser Engine

robert.ocallahan.org/2024/06/browser-engine.html