Domain-driven__gn_with_golang_use_golang_to_create_simple_maintainable_systems_to_solve_complex_business_problemszip May 2026

: Ensuring that the code reflects the same terminology used by business experts (e.g., using LoanApplication instead of GenericForm ).

Go's package system is well-suited for DDD. A common approach is to use the internal directory to prevent external exposure of domain-specific logic. Responsibility Typical Go Package Core business logic, entities, and repository interfaces. internal/domain Application Orchestrates tasks and delegates to domain objects. internal/application Infrastructure Implements repository interfaces (DB, APIs). internal/infrastructure Interfaces Entry points for the system (HTTP, CLI, gRPC). internal/interfaces Key Tactical Implementation Steps

: Implement functions like NewAggregateName to handle complex initialization and ensure the domain starts in a valid state. : Ensuring that the code reflects the same

DDD is divided into strategic and tactical patterns. Tactical patterns are the primary focus when structuring a Go codebase.

: Defined by their attributes rather than a unique ID (e.g., a Money or Address type). : Ensuring that the code reflects the same

: Define interfaces in the domain layer and provide implementations in the infrastructure layer to keep the system flexible and maintainable .

: Decoupled systems allow for easier unit testing of business rules without requiring a live database. : Ensuring that the code reflects the same

: Use Ports & Adapters (Hexagonal Architecture) alongside DDD to ensure that external technologies (like MongoDB or Postgres) do not leak into the business logic. Strategic Benefits