Book Image

Node.js Design Patterns

By : Mario Casciaro
Book Image

Node.js Design Patterns

By: Mario Casciaro

Overview of this book

Node.js is a massively popular software platform that lets you use JavaScript to easily create scalable server-side applications. It allows you to create efficient code, enabling a more sustainable way of writing software made of only one language across the full stack, along with extreme levels of reusability, pragmatism, simplicity, and collaboration. Node.js is revolutionizing the web and the way people and companies create their software. In this book, we will take you on a journey across various ideas and components, and the challenges you would commonly encounter while designing and developing software using the Node.js platform. You will also discover the "Node.js way" of dealing with design and coding decisions. The book kicks off by exploring the fundamental principles and components that define the platform. It then shows you how to master asynchronous programming and how to design elegant and reusable components using well-known patterns and techniques. The book rounds off by teaching you the various approaches to scale, distribute, and integrate your Node.js application.
Table of Contents (16 chapters)
Node.js Design Patterns
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Summary


The topic of dependency wiring is certainly one of the most opinionated in software engineering, but in this chapter, we tried to keep the analysis as factual as possible to give an objective overview of the most important wiring patterns. We cleared some of the most common doubts around Singletons and instances in Node.js, and we learned how to connect modules using hardcoded dependencies, dependency injection, and service locators. We practiced each technique using the authentication server as a playground, allowing us to identify the pros and cons of each approach.

In the second part of the chapter, we learned how an application can support plugins, but most importantly, how we can wire those plugins into the main application. We applied the same techniques presented in the first part of the chapter, but analyzed them from another perspective. We discovered how important it can be for a plugin to have access to the right services of the main application, and how much this can impact...