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


Validation and mapping are two important features that we need to take into account when developing APIs to build more robust and maintainable applications. Minimal APIs do not provide any built-in way to perform these tasks, so it is important to know how we can add support for this kind of feature. We have seen that we can perform validations with data annotations or using FluentValidation and how to add validation information to Swagger. We have also talked about the significance of data mapping and shown how to either leverage manual mapping or the AutoMapper library, describing the pros and cons of each approach.

In the next chapter, we will talk about how to integrate minimal APIs with a data access layer, showing, for example, how to access a database using Entity Framework Core.