Articles

Things I've learned and want to share, from technology and work to ways of thinking and everyday life.

Oct 16, 2026 · 13 min read · Part 1 · Python from the inside out

How Python runs concurrent code: from processes, threads and coroutines down to the kernel, and back up to FastAPI

Processes, threads, the GIL, coroutines, the event loop, epoll and FastAPI: what each layer does when a Python server holds thousands of requests at once, with experiments you can run.
Oct 16, 2026 · 10 min read · Part 1 · Problem solving

First-principles thinking: reason from the ground up, not from habit

How to break a problem down to facts you can't argue with and rebuild the answer from there, with a real example: serving a million users without a million threads.

How Python runs concurrent code: from processes, threads and coroutines down to the kernel, and back up to FastAPI