Quick Answer
Common Web API design patterns: Repository (abstract data access), CQRS (separate read/write), Mediator (decouple controller from handlers - MediatR library), DTO (separate API contract from domain), Decorator (add behavior without modifying service), Factory (create complex objects), Options pattern (strongly-typed config). These patterns together create maintainable, testable APIs.
Answer
Common Web API design patterns improve maintainability, scalability, and testability:
Repository Pattern – Abstracts data access; simplifies unit testing and business logic separation.
Unit of Work – Groups operations under a single transaction for consistency.
CQRS – Separates read and write operations for scalability and performance.
Mediator / MediatR – Decouples request-handling logic using command/query handlers.
Decorator Pattern – Adds logging, caching, or auditing without modifying core business logic.
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SugharaIQ Editorial Team
Verified Answer
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