aspnet-core

name	aspnet-core
description	ASP.NET Core web framework. Use when building .NET web APIs, Minimal APIs, MVC apps, Blazor components, Entity Framework Core, Identity/JWT auth, or middleware pipelines.

aspnet-core

Cross-platform, high-performance framework for modern web applications on .NET.

Core Concepts

• Minimal APIs: lightweight HTTP endpoints with top-level statements, minimal ceremony for microservices
• MVC pattern: controllers with attribute routing, model binding, and view rendering (Razor)
• Middleware pipeline: request/response components in configurable order (auth, logging, CORS, static files)
• DI Container: built-in dependency injection with scoped, transient, and singleton lifetimes

Common Patterns

• Entity Framework Core: code-first migrations, LINQ queries, eager loading, change tracking
• Blazor WASM/Server: client-side WebAssembly or server-rendered interactive components via SignalR
• Identity/JWT auth: ASP.NET Core Identity for user management, JWT bearer tokens for API auth
• Background services: IHostedService / BackgroundService for scheduled tasks and queue processing

Best Practices

• Program.cs as single startup entry point with clean separation of service registration and middleware config
• Action filters for cross-cutting concerns like validation, logging, and caching
• IOptions<T> pattern for strongly-typed configuration with reload-on-change support
• Integration tests with WebApplicationFactory over the full HTTP pipeline

Common Code Patterns

• app.MapGet("/api/products", handler) for Minimal API endpoints
• services.AddDbContext<AppDbContext>(o => o.UseSqlServer(connStr)) for DI registration