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Apps and Services with .NET 7

You're reading from   Apps and Services with .NET 7 Build practical projects with Blazor, .NET MAUI, gRPC, GraphQL, and other enterprise technologies

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Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781801813433
Length 814 pages
Edition 1st Edition
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Author (1):
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Mark J. Price Mark J. Price
Author Profile Icon Mark J. Price
Mark J. Price
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Table of Contents (23) Chapters Close

Preface 1. Introducing Apps and Services with .NET 2. Managing Relational Data Using SQL Server FREE CHAPTER 3. Managing NoSQL Data Using Azure Cosmos DB 4. Benchmarking Performance, Multitasking, and Concurrency 5. Implementing Popular Third-Party Libraries 6. Observing and Modifying Code Execution Dynamically 7. Handling Dates, Times, and Internationalization 8. Protecting Your Data and Applications 9. Building and Securing Web Services Using Minimal APIs 10. Exposing Data via the Web Using OData 11. Combining Data Sources Using GraphQL 12. Building Efficient Microservices Using gRPC 13. Broadcasting Real-Time Communication Using SignalR 14. Building Serverless Nanoservices Using Azure Functions 15. Building Web User Interfaces Using ASP.NET Core 16. Building Web Components Using Blazor WebAssembly 17. Leveraging Open-Source Blazor Component Libraries 18. Building Mobile and Desktop Apps Using .NET MAUI 19. Integrating .NET MAUI Apps with Blazor and Native Platforms 20. Introducing the Survey Project Challenge 21. Epilogue 22. Index

Understanding SignalR

The web is great for building general-purpose websites and services, but it was not designed for specialized scenarios that require a web page to be instantaneously updated with new information as it becomes available.

The history of real-time communication on the web

To understand the benefits of SignalR, it helps to know the history of HTTP and how organizations worked to make it better for real-time communication between clients and servers.

In the early days of the web in the 1990s, browsers had to make a full-page HTTP GET request to the web server to get fresh information to show to the visitor.

In late 1999, Microsoft released Internet Explorer 5.0 with a component named XMLHttpRequest that could make asynchronous HTTP calls in the background. This alongside dynamic HTML (DHTML) allowed parts of the web page to be updated with fresh data smoothly.

The benefits of this technique were obvious, and soon all browsers added the same component...

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