Have you ever hesitated between writing a method or a property, and then just picked one because “it felt right”? That small choice actually carries a lot of design weight. In this week’s video, I explore when properties make sense and when methods are the better choice. I talk about what properties promise to the reader of your code, why setters should be used carefully, how this choice affects abstractions and Protocols, and where async fits into all of this. This video is also a good...

Most systems don’t start out needing CQRS. They start simple: create, update, list, dashboard. Everything in one place. Everything reasonable. Until read requirements slowly begin to reshape the system, often in subtle ways 🧩. In this week’s video, I show how that happens using a FastAPI app backed by MongoDB, and how Command Query Responsibility Segregation (CQRS) provides a clean way out once reads and writes want very different things. Along the way, I cover: separating command intent from...

Have you ever looked at a Python script and thought: “Why is this slow? The logic is trivial.” Very often, the problem isn’t what your code does, but how often it does expensive work. In this week’s video, I start with a deliberately inefficient example: parsing a large CSV file multiple times. From there, I use it as a vehicle to introduce 10 powerful Python features that many developers either don’t know about or don’t know when to apply. I look at things like: • caching expensive...