MVC Components Breakdown

Designed using the Model-View-Controller (MVC) pattern to enforce a clear separation between data handling, user interface, and control logic. While MVC offered modularity and maintainability for this implementation, I understand that at scale — as in Amazon’s systems — microservices and event-driven architectures offer better scalability, fault isolation, and service independence. I'm currently deepening my understanding of distributed design by exploring containerization (Docker), orchestration (Kubernetes), and AWS-based service patterns to architect systems with production-level scalability.

System Flow Diagram

Smart Counterfeit Detection System Flow Diagram

Model (Data + Business Logic)

  • User: Stores user information, preferences, purchase history, payment methods.
  • Product Model: Product details, pricing, stock availability.
  • Order Model: Orders placed by users, order status, payment info.
  • Cart Model: Items selected by the user for purchase.
  • Review Model: Customer reviews and ratings.
  • Inventory Model: Stock management, warehouse info.
  • Recommendation Model: User preferences, purchase patterns.
    • Responsibilities:
  • Interact with the database.
  • Enforce business rules (e.g., apply discounts, validate payment).
  • Communicate with external services (payment gateways, logistics APIs).

View Layer

The View layer displays data to the user. For Amazon, this includes:

  • Product Listing Page: Displays products, search results, filters.
  • Product Details Page: Detailed view of a product.
  • Cart Page: Displays items in the cart.
  • Checkout Page: Payment forms, order summary.
  • Order Confirmation Page: Displays order status.
  • User Profile Page: User info and purchase history.
  • Review Page: Form for submitting product reviews.
Responsibilities:
  • Render data to users.
  • Collect user inputs (clicks, form submissions).
  • Provide responsive, dynamic UI for seamless shopping.

Controller Layer

Controllers receive user requests, interact with Models to process data, and select Views to render.

Some controllers for Amazon:

  • Product Controller: Handles search, filtering, and displaying products.
  • CartController: Manages adding/removing items from cart.
  • OrderController: Handles order creation, payment, and tracking.
  • UserController: Manages user registration, login, profile update.
  • ReviewController: Handles submission and display of reviews.
Responsibilities:
  • Receive and validate user inputs.
  • Invoke appropriate Model methods.
  • Choose which View to render based on outcomes.
  • Handle errors and redirect flows as needed.

Overall Flow Example:

  1. User searches for a product on the Amazon homepage (View).
  2. The ProductController receives the search input (Controller).
  3. It calls the Product Model to get matching products (Model).
  4. The controller sends this data back to the View for rendering the product list.
  5. User adds a product to their cart — CartController updates the Cart Model.
  6. The Cart View updates to show current cart contents.
    7.
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