Bored yet? 2025 was the fifth year in a row (2024, 2023, 2022, 2021) that Sentry gave a pretty hefty chunk of change to the maintainers of the Open Source softw...

A how-to guide for future-proofing your content-addressed website hosting.

I recently ported the Hardcaml_step_testbench library, one of the libraries that we use at Jane Street for Hardcaml simulations, from using monads to using algebraic effects, a new OCaml 5 feature. This blog post walks through what algebraic effects are, why you should consider using them in lieu of...

A live coding stream with Bill Kennedy, Kevin Enriquez, Andrey Nering, and me.

End-to-end tests are the best way to test your webapp, but they're flaky and annoying to write. I'm trying a new agentic approach that fixes the issue.

In Go, go.mod acts as both manifest and lockfile. There is never a reason to look at go.sum.

I really haven’t got much time or energy at the moment (I spent most of the Christmas break with an extremely painful back, which was exhausting and frustrating), but I wanted to post a very brief list of books I read this year. I read a total of 44 books this year, which includes re-reads […]

iowait (wait, wa, %iowait, wait%, or I/O wait) is often displayed by command-line Linux system monitoring tools such as top, sar, atop, and others. On its own, it's one of many performance stats that provide us insight into Linux system performance.Continue reading...

Do you want to practice mobile test automation development but need a React Mobile app to test against? I have one for you: DetoxDemo, an open-source app with a Login screen, built with ReactNative + TypeScript + Mobile automation written in Detox. The automated tests I coded myself, but the app is ...

"Post-AI" doesn't mean "no-AI." It means ready to outcompete an AI-first world . A...

I don't have any resolutions for 2026. I'll touch on 2025, but I'm not here to dissect 2025. Rather, I'm working on living with a bit more intention instead of trackable goals. I'm sick of tracking things to the point of mental and bodily fatigue. In a world full of robot slop, I'm a human being and...

I had a chat with Greg Cochran (GitHub), Christian Grobmeier (log4j), Michael Geers (evcc), and Camila Maia (ScanAPI) about the GitHub Secure OpenSource Fund. It was recorded at the last day of GitHub Universe 2025.

There's a human-shaped hole in the secret memory of the world. Somebody who walks without footprints and...

I keep track of an "ideal architecture", one that I would use if tasked to design a new system from scratch. For several years now this was AWS serverless. The AWS part is personal: this is the stack I'm most familiar with. And serverless because it works the same for small and for large. It is a ma...

PyCoder's Weekly included over 1,500 links to articles, blog posts, tutorials, and projects in 2025. Christopher Trudeau is back on the show this week to help wrap up everything by sharing some highlights and uncovering a few hidden gems from the pile. [ Improve Your Python With 🐍 Python Tricks 💌 – ...

Here's a way to create a VPN exception for local network devices using NordVPN.Failure to contactI was having trouble mounting my network drive. Symptoms:Pinging the network drive IP fails with no packets delivered:ping 192.168.1.200 PING 192.168.1.200 (192.168.1.200) 56(84) bytes of data. ^C --- 19...

Here's a way to change audio output to HDMI from within the terminal.The DiscoveryI've tried to do this for some time. The missing link was the fact that each sound card has profiles that define which of their inputs are used. HDMI is one such input.Now... enjoy the journey.List Sound CardsA sound c...

This article was first published in The Clarity Journal, our WyeWorks newsletter on leadership, uncertainty, and the craft of self…

We’ve optimized Warp's agent to use MCP more efficiently. MCP usage in Warp now uses 26% fewer tokens for tasks that rely on MCP context, and 10% fewer tokens when MCP context is supplied but unused. And these improvements were made for every AI model we support, without sacrificing quality. Here's ...

I called it a year in review but it's so much more.

I called it a year in review but it's so much more.

Software above some complexity level tends to sport an extension language, becoming a kind of software platform itself. Lua fills this role well, and of course there’s JavaScript for web technologies. WebAssembly generalizes this, and any Wasm-targeting programming language can extend a Wasm-hosting...

I bought a Pixoo64 LED Display to play around with, and I love it! It connects to WiFi and has an on-board HTTP API so you can program it. I made a Ruby client for it that even includes code to convert PNG files to the binary format the sign wants. One cool thing is that the display can be configure...

2025 set a new baseline with 48,185 published CVEs. While the sheer volume is climbing, the median CVSS score remained surprisingly stable. We are seeing a distinct shift toward web application flaws (specifically in the CMS ecosystem) and a wider distribution of vendors, proving that vulnerabilitie...

"The Origins of Political Order: From Prehuman Times to the French Revolution" by Francis Fukuyama - while reading this book it occurred to me that domains of study like political sciense must be incredibly difficult and frustrating. Imagine trying to match a model onto a set of data; the model has ...

As we reach the end of 2025, I take this opportunity to look back over the photos that I have taken and thing about the year. This year I published 1,064 photos to Flickr with, of course, at least one photo every day as part of my Project 365. The lovely thing is that my photos remind me what happen...

Linked lists are a data structure basic building block, with especially flexible allocation behavior. They’re not just a useful starting point, but sometimes a sound foundation for future growth. I’m going to start with the beginner stuff, then without disrupting the original linked list, enhance it...

As I’ve written before, I’m leaning heavily into immutability in the election site code. Until September 2025 (it’s taken a long time to get round to writing this blog post) that meant a combination of records, ImmutableList<T> and ImmutableDictionary<TKey, TValue>. In an ECMA C# standards meeting, ...

We’ve reached the perineum of the holidays and I’m enjoying some quiet time before the new year—a perfect time to reflect on the year just spent. Travel This year was a quiet year for air travel, perhaps even quieter than expected. I have been avoiding travel to the States, for the most part. That h...