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

Error handling

Error handling is one of the features that every application must provide. The representation of an error allows the client to understand the error and possibly handle the request accordingly. Very often, we have our own customized methods of handling errors.

Since what we’re describing is a key functionality of the application, we think it’s fair to see what the framework provides and what is more correct to use.

Traditional approach

.NET provides the same tool for minimal APIs that we can implement in traditional development: a Developer Exception Page. This is nothing but middleware that reports the error in plain text format. This middleware can’t be removed from the ASP.NET pipeline and works exclusively in the development environment (

Figure 3.13 – Minimal APIs pipeline, ExceptionHandler

If exceptions are raised within our code, the...