Book Image

Modern Web Development with ASP.NET Core 3 - Second Edition

By : Ricardo Peres
Book Image

Modern Web Development with ASP.NET Core 3 - Second Edition

By: Ricardo Peres

Overview of this book

ASP.NET has been the preferred choice of web developers for a long time. With ASP.NET Core 3, Microsoft has made internal changes to the framework along with introducing new additions that will change the way you approach web development. This second edition has been thoroughly updated to help you make the most of the latest features in the framework, right from gRPC and conventions to Blazor, which has a new chapter dedicated to it. You’ll begin with an overview of the essential topics, exploring the Model-View-Controller (MVC) pattern, various platforms, dependencies, and frameworks. Next, you’ll learn how to set up and configure the MVC environment, before delving into advanced routing options. As you advance, you’ll get to grips with controllers and actions to process requests, and later understand how to create HTML inputs for models. Moving on, you'll discover the essential aspects of syntax and processes when working with Razor. You'll also get up to speed with client-side development and explore the testing, logging, scalability, and security aspects of ASP.NET Core. Finally, you'll learn how to deploy ASP.NET Core to several environments, such as Azure, Amazon Web Services (AWS), and Docker. By the end of the book, you’ll be well versed in development in ASP.NET Core and will have a deep understanding of how to interact with the framework and work cross-platform.
Table of Contents (26 chapters)
Section 1: The Fundamentals of ASP.NET Core 3
Section 2: Improving Productivity
Section 3: Advanced Topics
Appendix A: The dotnet Tool

Performing health checking

Microsoft has been working on a health checking framework called Microsoft.AspNetCore.Diagnostics.HealthChecks, and released it as part of ASP.NET Core 2.2. It provides a standard and pluggable way to check the state of services on which your app depends. This is not a feature of ASP.NET itself, but since any complex web app normally has external dependencies, this may come in handy for checking their statuses before taking any action.

After adding the core NuGet package, you will need to add the ones for the checks that you're interested in, such as those for SQL Server. We register those in the ConfigureServices method, as follows:

.AddCheck("Web Check", new WebHealthCheck("http://"), HealthStatus.Unhealthy)
.AddCheck("Sample Lambda", () => HealthCheckResult.Healthy
("All is well!"))