Coding With David

  The uncomfortable truth After decades of building enterprise systems, here’s an observation that makes some people uncomfortable: Most people who ask for “real-time” data updates don’t actually need real time. What they want is confidence , responsiveness , and trust — not millisecond precision. And yet, the moment the phrase real time enters a requirements meeting, costs go up, architectures get complicated, and teams quietly inherit a system they now have to babysit forever. What people say vs. what they actually mean When someone says: “We need this data in real time.” They usually mean: “I don’t want stale data.” “I don’t want to refresh the page.” “I want to react quickly.” “I want to trust what I’m seeing.” None of those requires true real-time infrastructure. They require fast-enough data and good UX . Once you cross into true real time , you introduce: Persistent connections Stateful servers Fan-out scaling challenges Reconnection logic O...

  Introduction As a senior C# developer and solution architect, I've explored numerous architectural patterns throughout my career. Today, I want to share insights on a pattern that has fundamentally transformed how I structure Blazor applications: Vertical Slice Architecture (VSA). Traditional layered architectures organize code according to technical concerns—controllers, services, repositories, models. This approach has served us well for decades, but as applications grow in complexity, this horizontal organization can create significant cognitive overhead. Enter Vertical Slice Architecture—an approach that organizes code around features rather than technical layers. The Problem with Traditional Layered Architecture Most of us are familiar with the standard n-tier approach: YourApp/ ├── Controllers/ ├── Services/ ├── Repositories/ ├── Models/ └── ViewModels/ While this organization seems logical at first glance, it creates several challenges: Feature Fragmentation : Work...