MVC Architecture

MVC Architecture

Understanding the Basics

Model: Handles data and business logic. It retrieves, stores, and validates data, acting as the single source of truth for the application's state. "In MVC the Model includes all your business logic, database access, and any validation."

View: Responsible for the presentation layer. It displays the data to the user and manages the UI. It does not contain business logic. "Your view is how your application looks"

Controller: Acts as an intermediary between the Model and the View. It processes user input, updates the Model, and instructs the View to display the updated data. "The Controller coordinates between Model and View, processing user input and updating the appropriate components."

Advantages of MVC

  • Separation of Concerns: MVC helps organize code by separating concerns, making the codebase easier to maintain. "The point of MVC is that you should be able to switch pieces out."
  • Testability: Business logic in the Model is easy to test independently of the UI. "I was able to run tests without Unity Test Runner inside the IDE, which increased my iteration speed a ton."
  • Reusability: Components can be reused across projects. "You should be able to switch from a spreadsheet to a real database (model) without changing the processing logic (the controller) or the way the output is presented (the view)."

Disadvantages of MVC

  • Complexity: For small apps, MVC can add unnecessary overhead. "I hate this pattern because it increases a lot of work."
  • Circular Data Flow: The interaction can become confusing. "Works but the circular data flow can get confusing"
  • Learning Curve: MVC can be challenging for new developers. "To put it in simpler terms, MVC when compared to other design patterns is one of the easier to understand, but in the general sense of (junior) programming that they teach in bootcamps for example, it is rightfully considered quite complex"

MVC in Different Contexts

Web Development: MVC is widely used in frameworks like Ruby on Rails, ASP.NET MVC, and Django. "It runs on ASP.Net MVC. Is your website more demanding than that? No? Then you don't need anything fancier."

Game Development: MVC can help structure game code, but adds abstraction overhead. "Separation of game from a game engine is doable but adds a lot of efford."

Frontend Development: Angular uses an MVC-like architecture, unlike React’s component-driven approach. "Angular’s complete MVC implementation strategy and how it structures your entire application"

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