Latest / October 9, 2026
10 posts from engineering leaders published October 9, 2026, by Simon Willison, Jeff Geerling, Jamie Tanna and 3 more.
Deno is joining Cloudflare The Deno team released the first version of celld back in August - their open source implementation of the Durable Objects pattern from Cloudflare Workers. Today, Cloudflare are acquiring Deno outright, with the goal of building on celld to "make…
There was a time I'd look at a board like the Radxa Dragon Q8B (at left, above) and be like, "there's no way I'd spend $209 on an SBC with 8 gigs of RAM". But we're in 2026, and seeing the 8 gig Raspberry Pi 5 going for almost the same amount, I figured I'd give it a shot. On…
Everyone is very concerned about being respectable, so I’m going to be the goofball who raises worst-case possibilities. I think there is a 1% chance we live in Minicrypt, and a 15% chance we functionally lose confidence in our existing public-key encryption algorithms. [...]…
🤖 This post includes some LLM-derived content 🤖 A few years ago, Ryan wrote about how Bridgy , a service I use a lot, exposes log as the end user UI . This is a post that's stuck with me over the years, especially as someone whose work has generally comprised of building tools…
I shipped a new feature for my blog today: the Newsletters page, which offers an index of all of the newsletters I've sent out, both my free weekly Substack and my monthly sponsors-only updates. I built the feature almost entirely using my voice, chatting away to my laptop while…
Continuing on the subject of Forever Goals and Infinite Games, let’s compare them to habits. As a reminder, an Infinite Game is one you play so that you can play it. It is intrinsically fun. The goal, if there even is one, is to get better so that you can keep playing. A Forever…
When Ralph was published last year, I sat on it. People who have been reading this blog for a while know this. I first came across the idea of loop engineering in early January last year, sat on it for four months, and then started writing a lot, begging people
Here's something I've been meaning to write up for a while. It's kind of late, but I'm going to lean into the whole MCP vs. CLI argument because I have a perspective others might find interesting. What's the actual difference
Release: ttok 1.0 I released ttok 0.4 , ran uv tool upgrade ttok , piped a file into the new version... and realized that it was defaulting to the GPT-4 tokenizer when it should very clearly default to GPT-5/GPT-6 instead! I figured switching the default was a reasonable excuse…
The first time I used a coding agent, I was mesmerized . Before the agent, I was copy/pasting between my IDE and an AI chat interface. It was amazing to see an agent edit files directly and fix its own errors in real time. After a few days, the honeymoon wore off as I…