booking-microservices/2-Modular-Monolith-Architecture-Style

🪁 Modular Monolith Architecture Style

In Modular Monolith Architecture, the application is divided into modules, each responsible for a specific functionality. However, the entire application is still deployed as a single unit.

Table of Contents

• Key Features
• When to Use
• Challenges

Key Features

1. Modular Design: The application is divided into modules, each responsible for a specific functionality.
2. Loose Coupling: Modules interact through well-defined interfaces, improving maintainability.
3. Single Deployment: The entire application is still deployed as one unit.
4. Shared Database: Typically uses a single database, but modules can have their own schemas or tables.

When to Use

1. Medium to Large Projects: Suitable for applications with growing complexity but not ready for microservices.
2. Better Maintainability: Ideal for teams wanting a more organized and maintainable codebase than a traditional monolith.
3. Future-Proofing: A stepping stone toward microservices, allowing teams to prepare for future scalability.
4. Single Team or Small Teams: Works well for teams that want modularity without the overhead of distributed systems.

Challenges

• Still a single deployment unit, so scaling is limited.
• Requires careful design to avoid tight coupling between modules.
• Not as scalable or fault-tolerant as microservices.