internal/

internal

Private application code for this backend architecture template.

Pattern used

• Keep dependencies pointing inward: delivery -> usecase -> repository contracts.
• infra implements contracts; inner layers never import infra packages.
• Use constructor injection in internal/app only (composition root).
• Prefer small interfaces owned by consumers (SOLID interface segregation).

How to extend

1. Add usecase package in internal/usecase/<feature>.
2. Add contracts in internal/repository if persistence is needed.
3. Add infra implementation in internal/infra/....
4. Add transport handler in internal/delivery/....
5. Wire everything in internal/app/wiring.go.