Book Image

Mastering Minimal APIs in ASP.NET Core

By : Andrea Tosato, Marco Minerva, Emanuele Bartolesi
Book Image

Mastering Minimal APIs in ASP.NET Core

By: Andrea Tosato, Marco Minerva, Emanuele Bartolesi

Overview of this book

The Minimal APIs feature, introduced in .NET 6, is the answer to code complexity and rising dependencies in creating even the simplest of APIs. Minimal APIs facilitate API development using compact code syntax and help you develop web APIs quickly. This practical guide explores Minimal APIs end-to-end and helps you take advantage of its features and benefits for your ASP.NET Core projects. The chapters in this book will help you speed up your development process by writing less code and maintaining fewer files using Minimal APIs. You’ll also learn how to enable Swagger for API documentation along with CORS and handle application errors. The book even promotes ideas to structure your code in a better way using the dependency injection library in .NET. Finally, you'll learn about performance and benchmarking improvements for your apps. By the end of this book, you’ll be able to fully leverage new features in .NET 6 for API development and explore how Minimal APIs are an evolution over classical web API development in ASP.NET Core.
Table of Contents (16 chapters)
Part 1: Introduction
Part 2: What’s New in .NET 6?
Part 3: Advanced Development and Microservices Concepts


According to the official Microsoft documentation available at, the following definition is given for routing:

Routing is responsible for matching incoming HTTP requests and dispatching those requests to the app’s executable endpoints. Endpoints are the app’s units of executable request-handling code. Endpoints are defined in the app and configured when the app starts. The endpoint matching process can extract values from the request’s URL and provide those values for request processing. Using endpoint information from the app, routing is also able to generate URLs that map to endpoints.

In controller-based web APIs, routing is defined via the UseEndpoints() method in Startup.cs or using data annotations such as Route, HttpGet, HttpPost, HttpPut, HttpPatch, and HttpDelete right over the action methods.

As mentioned in Chapter 1, Introduction to Minimal APIs in minimal APIs, we define the...