Modular Monolith Architecture

1. Introduction

Modular Monolith Architecture is a software design pattern that combines the benefits of modularity with the simplicity of a monolithic architecture. This approach allows developers to create self-contained modules within a single codebase, facilitating easier management, scalability, and deployment.

2. Key Concepts

3. Advantages

• Improved maintainability through isolated modules.
• Faster development cycles due to parallel development on different modules.
• Better scalability by allowing teams to work independently on different modules.
• Reduced complexity compared to traditional monolithic architectures.

4. Best Practices

1. Define clear module boundaries based on business capabilities.
2. Utilize a common communication protocol (e.g., REST, GraphQL) for inter-module communication.
3. Implement a shared library for common functionalities to avoid code duplication.
4. Regularly refactor code to maintain modularity and reduce technical debt.

5. Code Example

Below is a simple example of a modular monolith in Node.js:

                // User Module
                class User {
                    constructor(name) {
                        this.name = name;
                    }
                }

                class UserService {
                    static createUser(name) {
                        return new User(name);
                    }
                }

                // Product Module
                class Product {
                    constructor(name) {
                        this.name = name;
                    }
                }

                class ProductService {
                    static createProduct(name) {
                        return new Product(name);
                    }
                }

                // Main Application
                const user = UserService.createUser('Alice');
                const product = ProductService.createProduct('Laptop');

                console.log(`User: ${user.name}, Product: ${product.name}`);
                

6. FAQ