Fundamental Principles
This guide explains the architectural foundation of Eiseniiaaaia frameworks, covering separation of concerns, component organization, and system interdependencies.
Modular Design
Separation of Concerns
Scalable Structure
Recommended Patterns
MVC Pattern
Model-View-Controller pattern for separating data logic from user interface.
// Example folder structure
├── models/
│ └── user.js
├── views/
│ └── dashboard.html
└── controllers/
└── userController.js
Clean Architecture
Layered architecture focusing on high cohesion and low coupling between components.
├── entities/
├── useCases/
├── interfaces/
├── presenter/
└── infrastructure/
System Architecture
Client Layer
Web and mobile clients interacting with the API gateway.
Service Layer
Business logic implemented with microservices architecture.
Data Layer
Database systems optimized for performance and scalability.
Component Interactions
// Communication example
const authService = new AuthenticationService();
const response = await authService.login({
email: "user@example.com",
password: "securepassword"
});
if (response.success) {
// Store tokens and redirect
}
Key Interactions
Secure token-based communication
Distributed caching pattern
Real-time analytics pipeline
Recommended Patterns
Dependency Inversion
Decouple high-level modules from low-level implementations using interfaces.
// Interface definition
interface Database {
save(data: any, id: string): void;
}
// Concrete implementation
class MongoDB implements Database {
save(data: any, id: string): void {
// Implementation
}
}
CQRS Pattern
Separate data operations into different models for reading and writing.
// Write model
class UserCommand {
constructor(private repo: UserRepository) {}
create(data) {
// Create logic
}
}
// Read model
class UserQueries {
constructor(private dataSource: DataSource) {
// Read from cache
}
}