Single vs. Multi-Module Repositories

A single-module repository contains one application or service, usually managed in a single Git repository. It's straightforward and ideal for small projects with limited scope. All code, dependencies, and configurations reside in one place, simplifying builds, testing, and deployment.

In contrast, a multi-module repository organizes multiple applications, services, or libraries within a single Git repository. This structure is common in large-scale projects using modular architectures (e.g., microservices or plugin-based systems). Each module can often be built and tested independently while sharing common infrastructure or code.

Choosing the Right Approach

Consider the following criteria:

1. Project Size & Complexity

   • Use a single-module repo for simple or single-purpose projects.

   • Use a multi-module repo for complex systems with shared components.

2. Team Structure

   • Small teams benefit from simplicity with a single module.

   • Larger teams may prefer modular repos for separation of concerns.

3. Build & Deployment Needs

   • Single-module repos simplify CI/CD pipelines.

   • Multi-module setups offer granular control over builds and deployments.

4. Code Sharing & Reuse

   • Multi-module repos enable efficient code reuse without dependency overhead.

5. Tooling & Maintenance

   • Multi-module projects require more advanced tooling and maintenance practices.

Choose the structure that aligns with your team size, project scope, and development workflow.