.NET 6 Minimal APIs: First Look

Inspired by Express.js and Go, .NET 6 introduces Minimal APIs. You can write a full API in 4 lines of code.

var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();

app.MapGet("/", () => "Hello World");
app.MapPost("/todo", (Todo t) => SaveTodo(t));

app.Run();

Performance

Minimal APIs bypass the traditional MVC Controller pipeline (Routing, Filters, Binding). They are marginally faster, but the real benefit is Developer Velocity. It removes the ceremony for simple microservices.