dotnet-architecture-patterns

Modern architecture patterns for .NET applications. Covers practical approaches to organizing minimal APIs at scale, vertical slice architecture, request pipeline composition, validation strategies, caching, error handling, and idempotency/outbox patterns.

Scope

• Vertical slice architecture and feature-folder organization
• Request pipeline composition and MediatR patterns
• Caching strategies (memory, distributed, output caching, HybridCache)
• Error handling and problem details (RFC 9457)
• Idempotency and outbox patterns
• Result pattern for business logic error flow

Out of scope

• DI container mechanics and async/await patterns -- see [skill:dotnet-csharp-dependency-injection] and [skill:dotnet-csharp-async-patterns]
• Project scaffolding and file layout -- see [skill:dotnet-scaffold-project]
• Testing strategies -- see [skill:dotnet-testing-strategy] and [skill:dotnet-integration-testing]
• SOLID principles and design pattern foundations -- see [skill:dotnet-solid-principles]