Angular Architecture Patterns for Scalable Applications

Building scalable Angular applications requires thoughtful architecture decisions. This article explores patterns and practices that help maintain code quality as your Angular application grows.

Feature Modules

Organizing your application into feature modules improves maintainability and enables lazy loading:

• Group related components, services, and pipes into cohesive modules
• Implement lazy loading to improve initial load time
• Create shared modules for reusable components
• Use core modules for singleton services

State Management

Effective state management is crucial for complex Angular applications:

• Use services with RxJS for simple state management
• Consider NgRx for complex applications with many state transitions
• Implement the repository pattern to abstract data access
• Leverage Angular's OnPush change detection for performance

Smart and Presentational Components

Separating components by responsibility improves testability and reusability:

• Smart components manage state and contain business logic
• Presentational components focus purely on the UI
• Use @Input() and @Output() for component communication
• Implement the container/presenter pattern for clear separation of concerns

By applying these architectural patterns, you can build Angular applications that scale gracefully as features are added and requirements change over time.