Table Of ContentEnterprise Application Development with
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an end-to-end road map for building enterprise applications from scratch using the latest features of .NET pes ar T ndn D C# 10 and .NET 6
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Throughout the book, you’ll work on creating an enterprise app, adding a key component to the app with each upth irisa itioelo
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chapter, before finally getting it ready for testing and deployment. You’ll learn concepts relating to advanced M m Second Edition
data structures, the Entity Framework Core, parallel programming, and dependency injection. As you progress, uth en
you’ll cover various authentication and authorization schemes provided by .NET Core to make your apps and iya t w
APIs secure. The book then shows you how the latest Microsoft Visual Studio and C# 10 help you simplify lu it
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developer tasks and shares tips and tricks in Visual Studio to improve your productivity. You’ll discover various
testing techniques, such as unit testing and performance testing, as well as different methods to deploy Become a professional .NET developer by learning
enterprise apps.
expert techniques for building scalable applications
By the end of this book, you’ll be able to create enterprise apps using the powerful features of .NET 6 and
deploy them to the cloud while working with various cloud components using Azure.
Things you will learn:
• DDesign enterprise apps by making the • Focus on the core concepts of web
most of the latest features of .NET 6 application development and implement
• Discover different layers of an app, them in .NET 6
such as the data layer, API layer, and • Integrate the new .NET 6 health and
web layer performance check APIs into your app
• Explore end-to-end architecture by • Explore MAUI and build an application
implementing an enterprise web app targeting multiple platforms - Android,
using .NET and C# 10 and deploying it iOS, and Windows
on Azure
Ravindra Akella | Arun Kumar Tamirisa |
Suneel Kumar Kunani | Bhupesh Guptha Muthiyalu
Enterprise
Application
Development with
C# 10 and .NET 6
Second Edition
Become a professional .NET developer by learning
expert techniques for building scalable applications
Ravindra Akella
Arun Kumar Tamirisa
Suneel Kumar Kunani
Bhupesh Guptha Muthiyalu
BIRMINGHAM—MUMBAI
Enterprise Application Development with
C# 10 and .NET 6
Second Edition
Copyright © 2022 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted
in any form or by any means, without the prior written permission of the publisher, except in the case
of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information
presented. However, the information contained in this book is sold without warranty, either express or
implied. Neither the authors, nor Packt Publishing or its dealers and distributors, will be held liable for
any damages caused or alleged to have been caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and
products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot
guarantee the accuracy of this information.
Group Product Manager: Richa Tripathi
Publishing Product Manager: Kunal Sawant
Senior Editor: Ruvika Rao
Technical Editor: Pradeep Sahu
Copy Editor: Safis Editing
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Business Development Executive: Kriti Sharma
First published: March 2021
Second edition: June 2022
Production reference: 1310522
Published by Packt Publishing Ltd.
Livery Place
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Birmingham
B3 2PB, UK.
ISBN 978-1-80323-297-3
www.packt.com
To my wife, Srividya, and my son, Vaarush, for their love and support.
– Ravindra Akella
To my family for their love and support.
– Arun Kumar Tamirisa
To my parents, Rajaiah and Mahalakshmi, for their love, endless support,
and encouragement.
– Suneel Kumar Kunani
To my parents, Mrs. Geetha Rani and Mr. Muthiyalu, for inspiration. To
my wife, Aparna, and my children, Tarak and Yashvak, for their continued
support and love. To my sister, Janani, for encouragement throughout the
long process of writing this book.
– Bhupesh Guptha Muthiyalu
Contributors
About the authors
Ravindra Akella works as a senior software engineer at Microsoft and has more than
15 years of software development experience, specializing in .NET and web-related
technologies. He has led software architecture, design, development, and delivery of large
complex solutions using the Azure cloud and related technologies. He is a tech-savvy
developer who is passionate about embracing new technologies.
I want to thank the people who have been close to me and supported me,
especially my wife, Srividya, and my parents. Also, thanks to the editors and
the team at Packt for their help and support throughout the process.
Arun Kumar Tamirisa is a senior consultant currently working at Microsoft with over
16 years' experience in IT, designing and developing highly scalable and reliable, large,
and complex applications using the Microsoft .NET and Azure technology stack. He has
extensive experience working with both client-side and server-side technologies and is
passionate about learning and solving complex problems.
I want to express my gratitude to my family members for their
unconditional love and support. My sincere thanks to the Packt team for
their continuous support throughout the journey of writing this book.
Suneel Kumar Kunani is a passionate developer who strives to learn something new
every day. With over 16 years of experience in .NET and Microsoft technologies, he works
on architecting and building mission-critical, highly scalable, and secure solutions at
Microsoft. He loves to teach and evangelize about the best practices in building distributed
cloud solutions.
I would like to first and foremost thank my family for their support,
patience, and encouragement throughout the long process of writing this
book. I would like to extend my thanks to the Packt team, the co-authors,
and the technical reviewers who made the journey of writing this book so
pleasant. I am thankful to my managers and colleagues who supported and
encouraged me in writing this book.
Bhupesh Guptha Muthiyalu is a Microsoft Certified Professional and works at
the company as a software engineering manager. He has over 17 years of software
development experience on the .NET technology stack. His current role involves
designing systems that are resilient to the iterations and changes required by businesses,
validating architectural innovations, delivering solutions with high quality, managing
the end-to-end ownership of products, and building diverse teams with the capabilities
to fulfill customer objectives. He is passionate about creating reusable components and
identifying opportunities to make a product better.
I would like to first and foremost thank my family for their support,
patience, and encouragement throughout the long process of writing this
book. I would like to extend my thanks to the Packt team, the co-authors,
and the technical reviewers for the great partnership and collaboration. I
am thankful to my managers and peers who supported and inspired me to
write this book.
About the reviewer
Vibhu Banga is currently a portfolio architect for a healthcare company in Hyderabad,
India. His previous job for more than 10 years was as a developer/architect for Microsoft
where he had delivered projects for customers on the Microsoft tech stack. He has been an
active member in the open source dotnet community. He is a Microsoft Certified Azure
Architect and DevOps Expert. Vibhu has contributed to open source projects related to
building ERP solutions for retailers, brands, and the automobile industry under the free
Apache license, all of which were developed in .NET 6.0.
I am deeply indebted to my friend, Ravindra, who was confident that I
could take on this heavy job of being a technical reviewer, as this is my first
book. I am also thankful to my parents and my loving wife for providing me
all the support I need and tolerating my busy schedule and still standing by
my side. I had no time to take my wife out for vacations or celebrations, but
she still supported me and has always been the strongest pillar for me.
Table of Contents
Preface
Part 1: Fundamentals
1
Designing and Architecting the Enterprise Application
A primer on common design Identifying enterprise
principles and patterns 4 application requirements
(business and technical) 19
Design principles 4
Design patterns 8 The application's business requirements 20
The application's technical requirements 20
Understanding common
enterprise architectures 12 Architecting an
enterprise application 22
Common issues with monolithic apps 13
Separation of concerns/single- Solution structuring of
responsibility architecture 14 the application 26
Stateless services architecture 16 Summary 27
Event-driven architecture 17
Questions 27
Resiliency architecture 18
2
Introducing .NET 6 Core and Standard
Technical requirements 30 Setting up the
Introducing .NET 6 30 development environment 35
Understanding the CLI 37
Understanding the core features 31
Understanding application frameworks 33 Overview of global.json 39
Understanding the core What is .NET Standard? 40
components of .NET 34
viii Table of Contents
Understanding the use of .NET 6 and Cloud support 45
.NET Standard 41
Summary 46
Understanding .NET 6
Questions 46
cross-platform and cloud
Further reading 47
application support 43
3
Introducing C# 10
Technical requirements 50 Adding attributes to
Lambda expressions 57
Simplification of the
using directives 50
Enhancements to
The global using directives 50 interpolated strings 58
The implicit using directives 51 Extended property patterns 60
The record structs 52 Addition to the caller
argument attributes 61
Improvements to
Lambda expressions 55 Summary 64
Inferring the expression type 55 Questions 64
Return types for Lambda expressions 56
Part 2: Cross-Cutting Concerns
4
Threading and Asynchronous Operations
Technical requirements 70 The critical section and thread safety 82
Understanding the jargon 70 Introducing locks 83
Mutex (Windows only) 84
Demystifying threads, lazy
Introducing semaphores and
initialization, and ThreadPool 72
SemaphoreSlim 84
Working with System.Threading.Thread 73
Choosing the right synchronization
ThreadPool 75
constructs 86
Lazy initialization 77
Introducing tasks and parallels 88
Understanding locks,
Introduction to Task and the TPL 88
semaphores, and
Handling task exceptions 91
SemaphoreSlim 82
Table of Contents ix
Implementing task cancellation 92 Using concurrent collections
Implementing continuations 96 for parallelism 117
SynchronizationContext 97 ConcurrentDictionary 117
TaskScheduler 98 Producer-consumer concurrent
Implementing data parallelism 98 collections 122
Using Parallel LINQ (PLINQ) 100 The BlockingCollection<T> class 126
Introducing async-await 105 Summary 129
The task-based asynchronous pattern 106 Questions 130
Principles of using async-await 108 Further reading 131
Async streams with IAsyncEnumerable 114
ThreadPool starvation 116
5
Dependency Injection in .NET 6
Technical requirements 134 Managing application services 149
What is DI? 134 DI in Razor Pages 155
Types of DI 135 Using third-party containers 156
DI in ASP.NET Core 6 137 Summary 159
Understanding service lifetimes 139 Questions 160
6
Configuration in .NET 6
Technical requirements 162 Building a custom
Understanding configuration 162 configuration provider 183
Default configuration 163 Configuration source 183
Adding configurations 165 Configuration provider 184
Reading configurations 166 Configuration extension 186
Leveraging built-in Summary 188
configuration providers 169 Questions 188
Azure Key Vault configuration provider 170 Further reading 189
File configuration provider 181
