Domainlogik

Domainlogik is a term in software engineering describing the focus on domain logic—the rules and behavior that express a business concept. It denotes both a design mindset and, in some ecosystems, libraries or frameworks intended to implement domain models while isolating core business rules from user interfaces, application services, and infrastructure.

Core concepts commonly linked to Domainlogik include the domain model, entities and value objects, aggregates as consistency boundaries, domain events, and domain services. The approach emphasizes bounded contexts to maintain linguistic clarity and to prevent rule leakage across parts of a system.

Architecturally, Domainlogik favors a layered structure with a domain layer containing the model and business logic, an application layer coordinating tasks, and persistence accessed through repositories. An anti-corruption layer can connect with external systems without polluting the domain model. Event-driven communication and event sourcing are often used to express state changes.

Adoption centers on complex business domains such as finance, manufacturing, and logistics, where preserving invariants and enabling rule evolution are priorities. The approach typically improves testability by making domain behavior explicit and separable from infrastructure concerns.

History and variants: The term arises from the Domain-Driven Design movement and has been adopted by various vendors and projects. There is no single standardized implementation of Domainlogik; different ecosystems offer differing idioms and tooling.

See also: Domain-driven design, domain model, business logic, aggregates, domain events, bounded context, event sourcing, CQRS.