Core Architectural Principles
Clean Architecture places domain business logic at the center of the application, completely decoupled from database frameworks, third-party libraries, and UI delivery mechanisms. This guarantees testability, longevity, and painless tech stack upgrades.
1. The Four-Layer Clean Architecture Blueprint
In high-velocity enterprise teams, codebases are organized into strict dependency layers pointing inwards:
- Domain: Pure C# entities, value objects, domain events, and repository interfaces. Has zero external NuGet dependencies.
- Application: Use cases, CQRS Command & Query handlers, DTOs, and validation logic. Depends only on Domain.
- Infrastructure: Database contexts (EF Core, Dapper), external API connectors (Stripe, Twilio, SendGrid), and file storage services.
- Web / API Presentation: Controllers, Minimal APIs, Middleware, ViewModels, and Razor views.
2. Leveraging Dapper + EF Core Hybrid Persistence
To achieve both rapid development and maximum query throughput, modern .NET 10 architectures combine:
- EF Core for complex transactional writes, state tracking, and schema migrations.
- Dapper for ultra-fast, zero-allocation read queries, analytical dashboards, and public catalog endpoints.
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