dotnet-10-csharp-14

Modern .NET 10 and C# 14 patterns for minimal APIs, modular monoliths, and resilient applications. .NET 10 (LTS, Nov 2025) with C# 14. Covers minimal APIs, not MVC. Official docs: .NET 10 | C# 14 | ASP.NET Core 10 See anti-patterns.md for complete list. See libraries.md for usage examples. - Covers C# 14 syntax (extension blocks, field keyword, null-conditional assignment) and .NET 10 minimal APIs with validation, TypedResults, and modular architecture - Includes security patterns: JWT authentication, CORS, rate limiting, middleware ordering, and RFC 9457 problem details - Provides infrastructure guidance on Options pattern variants (IOptions, IOptionsSnapshot, IOptionsMonitor), HTTP resilience with standard handlers, Channels, health checks, and EF Core - Documents mandatory patterns (always use TypedResults, ValidateOnStart, UtcNow) and anti-patterns to avoid (manual HttpClient, blocking async, N+1 queries) - Includes integration testing with WebApplicationFactory and recommended libraries (MediatR, FluentValidation, Mapster, ErrorOr, Polly, Serilog)