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Modular Infrastructure

Overview​

The Modular Infrastructure approach promotes a highly decoupled architecture by splitting the project into independent modules. Each module is responsible for a specific business domain or technical function, improving maintainability, scalability, and reusability.

Why Use This Structure?​

  • Encapsulation of Business Logic – Each module operates independently, reducing dependencies between unrelated features.
  • Improved Maintainability – Changes to one module do not affect others, making the system easier to update.
  • Better Scalability – Modules can be developed, tested, and deployed independently.
  • Enhanced Reusability – Common functionalities can be extracted into shared modules.

Allowed Directory/Package Names​

Package Hierarchy and Responsibilities​

root/ # Contains all independent feature-based modules
|
├── user/            # User management module
├── order/           # Order processing module
├── payment/         # Payment handling module
├── notification/    # Notification system module
│
├── common/              # Common utilities and components
│   ├── security/        # Security-related functionality
│   ├── logging/         # Logging mechanisms
│   ├── config/          # Shared configurations across modules

Recommended Package Naming:

com.company.project.modules.user.*
com.company.project.modules.order.*
com.company.project.modules.payment.*
com.company.project.modules.notification.*

com.company.project.shared.security.*
com.company.project.shared.logging.*
com.company.project.shared.config.*

Implementation Notes​

  • Modules should contain everything they need (services, repositories, controllers) within their directory.
  • Shared Components should only contain common functionalities that are truly cross-cutting (e.g., logging, authentication).
  • Module Independence should be maintained by reducing interdependencies. If communication between modules is needed, use well-defined interfaces or an event-driven approach.
  • Feature-Based Organization is recommended, ensuring each module represents a specific business function.

By following Modular Infrastructure, teams can build scalable, maintainable, and independent services that align with modern microservices and domain-driven design (DDD) principles.