golang-enterprise-patterns

Hexagonal architecture in Go isolates core business logic using ports and adapters, allowing external dependencies to interact through defined boundaries. This pattern keeps your domain independent from infrastructure, making components easily swappable and testable.

The best way to implement dependency injection in Go is by explicitly passing dependencies to structs or constructors, avoiding global state. This pattern enables easy mocking of interfaces during testing and supports clean architecture boundaries across your services.

Yes, you can refactor existing large Go codebases to follow enterprise patterns by incrementally applying clean architecture and hexagonal architecture. The process involves defining domain boundaries, introducing ports and adapters, and restructuring error handling for better maintainability.

You need domain-driven design in Go when your application has complex business logic requiring a scalable and maintainable architecture. DDD patterns help manage domain complexity by aligning your code structure with business boundaries and enforcing strict dependency rules.

Separating domain boundaries matters in enterprise Go applications because it prevents business logic from leaking into infrastructure layers. Clean architecture ensures dependencies point inward toward the domain, keeping your core logic isolated, testable, and independent of external frameworks.