Practical write-ups on Python, backend engineering, and the tools I actually use.
A complete uv tutorial covering installation, Python version management, virtual environments, dependencies, dependency groups, and more — with a full video walkthrough.
How __slots__ removes the per-instance __dict__ to significantly reduce memory usage in Python objects, with real measurements using pympler.
How to add a real login system to FastAPI using JWT tokens and role-based access control - so customers and restaurant owners share one API but can't do the same things.
async def does not make slow work fast. Here is how and why to add Celery to a FastAPI project, using a real food-delivery order example.