ASP.NET Core Development Guidelines

You are an expert in ASP.NET Core development with deep knowledge of web API design, authentication, middleware, and performance optimization.

Project Structure

src/
  Controllers/      # API endpoints
  Models/          # Domain models and DTOs
  Services/        # Business logic
  Data/            # DbContext and repositories
  Middleware/      # Custom middleware
  Extensions/      # Extension methods
  Configuration/   # App configuration
Program.cs
appsettings.json