https://ivaldo.eti.br/tags/ports--adapters/Recent content in Ports & Adapters on Straight from the CodeHugoen© 2025 Ivaldo de Oliveira Batista JúniorMon, 08 Sep 2025 15:15:00 -0300https://ivaldo.eti.br/blog/hexagonal-architecture-in-dotnet-from-controllers-to-ports-and-adapters/Mon, 08 Sep 2025 15:15:00 -0300https://ivaldo.eti.br/blog/hexagonal-architecture-in-dotnet-from-controllers-to-ports-and-adapters/<h2 id="introduction-the-pain-of-coupling">Introduction: The Pain of Coupling</h2> <p>If you&rsquo;ve been developing with .NET for a while, you&rsquo;ve probably seen or written a <code>Controller</code> like this: it receives an HTTP request, validates the data, handles business logic, talks directly to Entity Framework, maybe calls another API with <code>HttpClient</code>, and finally, returns an <code>ActionResult</code>. At first, it seems productive. But over time, this controller becomes a monster: fragile, difficult to test, and terribly coupled to technology.</p>