Building Scalable Mobile Apps with Flutter and Clean Architecture

As a mobile engineer, I've learned that the key to building successful apps lies not just in features, but in architecture. Here's my approach to creating scalable Flutter applications.

Why Clean Architecture?

Clean Architecture separates concerns into distinct layers:

Presentation Layer: UI widgets and state management

Domain Layer: Business logic and use cases

Data Layer: Repositories and data sources

Project Structure

lib/
├── core/
│   ├── network/
│   └── utils/
├── features/
│   └── feature_name/
│       ├── data/
│       ├── domain/
│       └── presentation/
└── main.dart

State Management with BLoC

For complex apps like ride-hailing platforms, I prefer BLoC pattern:

class RideBloc extends Bloc {
  final GetActiveRide getActiveRide;
  
  RideBloc({required this.getActiveRide}) : super(RideInitial()) {
    on(_onLoadRide);
  }
}

Real-time Features

Building apps with real-time tracking requires:

1. WebSocket connections for live updates

2. Efficient location services with background processing

3. Smart caching to reduce API calls

This architecture has helped me build production-ready apps serving thousands of users.