If you are already familiar with MVC, you can skip this section. If you are a beginner, you need to understand the MVC (Model-View-Controller) design architecture.

MVC divides an application into three main components: Model, View, and Controller.

• Model: Responsible for the application's data and business logic. Directly manages data, logic, and rules. Interacts with the database to handle data storage and retrieval.
• View: Responsible for data display and the user interface. Directly interacts with the user, presenting data and receiving user input. Updates the display to reflect the latest state of the model.
• Controller: Responsible for processing user input and requests. Receives input from the view, processes it, and updates the model or view. Acts as an intermediary between the model and view, orchestrating their interaction.

Since we have separated the front-end and back-end, the View layer is actually handled by the front-end. We only need to focus on the Controller and Model layers. It should be noted that MVC is just a design concept, and there is no need to delve too deeply into it.