Things I've learned and want to share, from technology and work to ways of thinking and everyday life.
What an object looks like in memory, how types and functions are objects too, then import step by step: sys.modules, finders, loaders, packages, .pyc files, up to the moment uvicorn loads a FastAPI app.
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.
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.