Hands-On RESTful Web Services with ASP.NET Core 3: Design production-ready, testable, and flexible RESTful APIs for web applications and microservices

Get up to speed with the latest features of C# 8, ASP.NET Core 3 and .NET Core 3.1 LTS to create robust and maintainable web services

Key Features

• Apply design patterns and techniques to achieve a reactive, scalable web service
• Document your web services using the OpenAPI standard and test them using Postman
• Explore mechanisms to implement a secure web service using client-side SSL and token authentication

Book Description

In recent times, web services have evolved to play a prominent role in web development. Applications are now designed to be compatible with any device and platform, and web services help us keep their logic and UI separate. Given its simplicity and effectiveness in creating web services, the RESTful approach has gained popularity, and this book will help you build RESTful web services using ASP.NET Core.

This REST book begins by introducing you to the basics of the REST philosophy, where you'll study the different stages of designing and implementing enterprise-grade RESTful web services. You'll also gain a thorough understanding of ASP.NET Core's middleware approach and learn how to customize it. The book will later guide you through improving API resilience, securing your service, and applying different design patterns and techniques to achieve a scalable web service. In addition to this, you'll learn advanced techniques for caching, monitoring, and logging, along with implementing unit and integration testing strategies. In later chapters, you will deploy your REST web services on Azure and document APIs using Swagger and external tools such as Postman.

By the end of this book, you will have learned how to design RESTful web services confidently using ASP.NET Core with a focus on code testability and maintainability.

What you will learn

• Gain a comprehensive working knowledge of ASP.NET Core
• Integrate third-party tools and frameworks to build maintainable and efficient services
• Implement patterns using dependency injection to reduce boilerplate code and improve flexibility
• Use ASP.NET Core's out-of-the-box tools to test your applications
• Use Docker to run your ASP.NET Core web service in an isolated and self-contained environment
• Secure your information using HTTPS and token-based authentication
• Integrate multiple web services using resiliency patterns and messaging techniques

Who this book is for

This book is for anyone who wants to learn how to build RESTful web services with the ASP.NET Core framework to improve the scalability and performance of their applications. Basic knowledge of C# and .NET Core will help you make the best use of the code samples included in the book.

Table of Contents

1. REST 101 and Getting Started with ASP.NET Core
2. Overview of ASP.NET Core
3. Working with the Middleware Pipeline
4. Dependency Injection System
5. Web Service Stack in ASP.NET Core
6. Routing System
7. Filter Pipeline
8. Building the Data Access Layer
9. Implementing the Domain Logic
10. Implementing the RESTful HTTP Layer
11. Advanced Concepts of Building an API
12. The Containerization of Services
13. Service Ecosystem Patterns
14. Implementing Worker Services Using .NET Core
15. Securing Your Service
16. Caching Web Service Responses
17. Logging and Health Checking
18. Deploying Services on Azure
19. Documenting Your API Using Swagger
20. Testing Services Using Postman

Samuele Resca is a software engineer working at Just Eat and primarily focused on web technologies. He is a Microsoft Most Valuable Professional in Visual Studio and development technologies. Samuele writes software engineering blog posts on Samuele Resca Blog and The DEV Community, and he contributes to open source projects. He is continuously learning and developing around the web ecosystem with a focus on the .NET Core ecosystem, cloud computing, serverless computing, and reactive programming. Samuele is from Italy, and he currently lives in London.