Yesterday
- I released a new alpha version of sqlite-utils last night—the 128th release of that package since I started building it back in 2018. sqlite-utils is two things in one package: …
- This is a chapter from my book on Go concurrency, which teaches the topic from the ground up through interactive examples.Testing concurrent programs is a lot like testing single-task programs. If the code is well-designed, you can test the state of a concurrent program with...
This week
- Your computer runs tons of processes in the background, and pulling a plug out of a socket when it is in the middle of something is not a good idea. Doing that to your running service is also pretty risky, but this is precisely what happens when you terminate your running server...
- A step-by-step practical guide on building AI agents using Gemini 3 Pro, covering tool integration, context management, and best practices for creating effective and reliable agents....
- A database permissions change ended up knocking Cloudflare’s proxy offline. Pinpointing the root cause was tricky – but Cloudflare shared a detailed postmortem. Also: announcing The Pragmatic Summit...
- What Now? Handling Errors in Large Systems function vote(btn, choice) { const widget = btn.closest('.vote-widget'); widget.querySelector('.user-vote').textContent = choice === 'tick' ? '✅' : '❌'; widget.querySelector('.result').style.display = 'block';...
- I enjoyed listening to Feross Aboukhadijeh, founder and CEO of the security firm Socket, on the Changelog podcast “npm under siege”. The cat-and-mouse nature of security is a kind of infinite source of novel content, like a series of heist movies that never produces the same...
Last week
- I recently added a bunch of app icons from macOS Tahoe to my collection. Afterwards, I realized some of them were missing relational metadata. For example, I have a collection of iMove icons through the years which are related in my collection by their App Store ID. However, the...
- Every company that I’ve helped start their enterprise architecture practice so far, always tell me that they might not have architecture setup yet, but they do have a ton of information in the CMDB that we can use to kickstart the exercise. The CMDB is our source of truth of all...
- Connect to TCP, UDP, IP, or Unix sockets, with an optional timeout....
- Markov chain babblers, bogus php files, and more!...
- I redesigned maxleiter.com this week. I've wanted to make it more personal and opionated for a long time, but felt I lacked the expertise to do it justice. With v0 and Claude Code (and some manual cleanup) it only took a few hours. If you haven't played with the homepage yet,...
Two weeks ago
- I’ve been curious about how far you can push object storage as a foundation for database-like systems. In previous posts, I explored moving JSON data from PostgreSQL to Parquet on S3 and building MVCC-style tables with constant-time deletes using S3’s conditional writes. These...
- I got tired of writing if-else statements to validate the HTTP request like this: ```tsx:route.ts showLineNumbers export const GET = async (request: Request) => { const { searchParams } = new URL(request.url) const name = searchParams.get('name') if (!name) { return...
- by Dylan Huang on November 7, 2025From fixed-shape compute to variable-shape, memory-coupled inference For years, production ML looked like images or fixed-duration signals—tight, predictable tensors. You sized for FLOPs, picked a batch size, and rode the throughput curve. LLMs...
- TLDR: I’ve shipped a new NPM module called gif2vid that enables video encoding of GIF files in the browser, in your terminal and in a web app backend. I’ve also created an uber simple website at https://gif2vid.com where you can use it. My kids enjoy building cute (and sometimes...
- The DX AI-assisted engineering: Q4 (2025) impact report offers one of the most substantial empirical views yet of how AI coding assistants are affecting software development, and largely corroborates the key findings from the 2025 DORA State of AI-assisted Software Development...
About a month ago
- I have been learning about memory in AI agents, and found myself overwhelmed by all the new terms. It started with short-term and long-term memory. Then it became even more confusing with procedural, episodic, and semantic memory. But wait. Semantic memory reminded me of a...
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