Domain-driven__gn_with_golang_use_golang_to_create_simple_maintainable_systems_to_solve_complex_business_problemszip

: Decoupled systems allow for easier unit testing of business rules without requiring a live database.

: Start by creating types that represent your business rules. Use Go structs to enforce constraints (e.g., a title must be between 1–50 characters).

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 : Decoupled systems allow for easier unit testing

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

: Clusters of domain objects treated as a single unit for data changes. For instance, a Customer aggregate might encapsulate validation and ID generation within a factory function like NewCustomer . Entities & Value Objects : Go's package system is well-suited for DDD

: Implement functions like NewAggregateName to handle complex initialization and ensure the domain starts in a valid state.

: An abstraction layer between the domain and the data store, allowing the domain to remain agnostic of the underlying database. Proposed Project Structure a Money or Address type).

: Defined by their attributes rather than a unique ID (e.g., a Money or Address type).