Daily learnings and observations from building software systems. A quiet corner for backend engineering, distributed systems, and CS.
My development workflow has changed quite a bit over the last few months. I barely type code anymore. Most of the time I describe what I want done, hand the work to an agent, and move on to something else while it works. The interesting part…
A modern CPU has a private L1 and L2 cache per core. Which raises an awkward question nobody asks until concurrency bites them: if core 0 and core 1 both have a copy of the same memory in their private caches, and core 0 writes to it… what…
Most mainstream frontend frameworks are built on the same bet: describing the entire UI from scratch on every state change is a nice programming model, and we can make it fast enough with a virtual DOM and a diffing algorithm. React made that…
The most annoying bug class in a typical web app isn’t in the backend or the frontend, it’s in the gap between them. The backend renames a field, the frontend keeps sending the old one, and nothing fails until runtime. JSON is the world’s…
Back in November I wrote a very basic overview of the Go garbage collector and promised a more technical article once I had properly read the official Go GC Guide. I finally did, so here it is. The goal of this article is to understand what…