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

Using telemetry

Telemetry consists of transparently collecting usage data from software over the internet. It can be very helpful in the sense that all your applications are monitored centrally, and telemetry packages usually supply handy tools, such as rich user interfaces for selecting exactly what we want to see, or creating alarms. There are a few alternatives, and we will only touch on a few of the most popular ones in the following sections.

Using trace identifiers

ASP.NET Core provides anIHttpRequestIdentifierFeature feature that generates a unique ID per each request. This ID may help you correlate events that happen in the context of a request. Here are three ways to get this ID:

//using the TraceIdentifier property in ASP.NET Core 2.x
var id1 = this.HttpContext.TraceIdentifier;

//accessing the feature in earlier versions of ASP.NET Core
var id2 = this.HttpContext.Features.Get<IHttpRequestIdentifierFeature>().TraceIdentifier;

//another way