Book Image

Hands-On Design Patterns with C# and .NET Core

By : Gaurav Aroraa, Jeffrey Chilberto
Book Image

Hands-On Design Patterns with C# and .NET Core

By: Gaurav Aroraa, Jeffrey Chilberto

Overview of this book

Design patterns are essentially reusable solutions to common programming problems. When used correctly, they meet crucial software requirements with ease and reduce costs. This book will uncover effective ways to use design patterns and demonstrate their implementation with executable code specific to both C# and .NET Core. Hands-On Design Patterns with C# and .NET Core begins with an overview of object-oriented programming (OOP) and SOLID principles. It provides an in-depth explanation of the Gang of Four (GoF) design patterns, including creational, structural, and behavioral. The book then takes you through functional, reactive, and concurrent patterns, helping you write better code with streams, threads, and coroutines. Toward the end of the book, you’ll learn about the latest trends in architecture, exploring design patterns for microservices, serverless, and cloud native applications. You’ll even understand the considerations that need to be taken into account when choosing between different architectures such as microservices and MVC. By the end of the book, you will be able to write efficient and clear code and be comfortable working on scalable and maintainable projects of any size.
Table of Contents (19 chapters)
Free Chapter
1
Section 1: Essentials of Design Patterns in C# and .NET Core
4
Section 2: Deep Dive into Utilities and Patterns in .NET Core
10
Section 3: Functional Programming, Reactive Programming, and Coding for the Cloud

Concurrent collections

The .NET Core framework provides a variety of collections with which we can use LINQ queries. As a developer, there are far fewer options when looking for thread-safe collections. Without thread-safe collections, it can become difficult for developers when they have to perform multiple operations. In this case, we would meet the race condition that we have already discussed in Chapter 4, Implementing Design Patterns - Basics Part 2. To overcome such situations, we need to use the lock statement, as we have used in the previous section. For example, we can write a code of a simplified implementation of the lock statement—refer to the following code snippet, where we have used the lock statement and collection class, Dictionary:

public bool UpdateQuantity(string name, int quantity)
{
lock (_lock)
{
_books[name].Quantity += quantity;
...