What are some examples of scalable and maintainable mobile app architecture designs for your portfolio?

1 Model-View-Controller (MVC)

MVC is one of the most popular and widely used architecture patterns for mobile apps. It divides your app into three layers: the model, the view, and the controller. The model is responsible for managing the data and logic of your app, the view is responsible for displaying the user interface and receiving user input, and the controller is responsible for coordinating the model and the view. MVC allows you to separate the concerns of your app and reuse the components across different screens. However, MVC can also lead to some drawbacks, such as tight coupling between the view and the controller, and excessive code in the controller.

2 Model-View-Presenter (MVP)

MVP is an alternative to MVC that aims to address some of its issues. It also divides your app into three layers: the model, the view, and the presenter. The model is similar to MVC, but the view and the presenter are different. The view is a passive interface that only displays what the presenter tells it to, and the presenter is an active component that handles the user input and updates the view and the model accordingly. MVP allows you to decouple the view and the presenter, and make the presenter more testable. However, MVP can also introduce some complexity, such as requiring more interfaces and classes, and creating more dependencies between the components.

3 Model-View-ViewModel (MVVM)

MVVM is another variation of MVC that is especially suitable for mobile apps that use data binding. It also divides your app into three layers: the model, the view, and the view model. The model is similar to MVC and MVP, but the view and the view model are different. The view is a declarative interface that binds to the properties and events of the view model, and the view model is an abstraction of the view that exposes the data and logic of your app. MVVM allows you to simplify the view and the view model, and make them more independent and testable. However, MVVM can also have some challenges, such as managing the state and lifecycle of the view model, and debugging the data binding.

4 Clean Architecture

Clean Architecture is a general architecture concept that is based on the principles of separation of concerns, dependency inversion, and abstraction. It organizes your app into concentric layers that represent different levels of abstraction and responsibility. The innermost layer is the domain layer, which contains the core business logic and models of your app. The next layer is the data layer, which contains the data sources and repositories of your app. The outermost layer is the presentation layer, which contains the user interface and presentation logic of your app. Clean Architecture allows you to isolate the dependencies and details of each layer, and make your app more modular, testable, and adaptable. However, Clean Architecture can also require more effort and planning, and create more boilerplate code and interfaces.