Book Image

Node.js Design Patterns - Second Edition

By : Joel Purra, Luciano Mammino, Mario Casciaro
Book Image

Node.js Design Patterns - Second Edition

By: Joel Purra, Luciano Mammino, 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 basics of Node.js describing it's asynchronous single-threaded architecture and the main design patterns. It then shows you how to master the asynchronous control flow patterns,and the stream component and it culminates into a detailed list of Node.js implementations of the most common design patterns as well as some specific design patterns that are exclusive to the Node.js world.Lastly, it dives into more advanced concepts such as Universal Javascript, and scalability' and it's meant to conclude the journey by giving the reader all the necessary concepts to be able to build an enterprise grade application using Node.js.
Table of Contents (20 chapters)
Node.js Design Patterns - Second Edition
Credits
About the Authors
Acknowledgments
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface

Comparison


At this point, we should have a better understanding of the options we have to tame the asynchronous nature of JavaScript. Each one of the solutions presented has its own pros and cons. Let's summarize them in the following table:

Solutions

Pros

Cons

Plain JavaScript

  • Does not require any additional libraries or technology

  • Offers the best performance

  • Provides the best level of compatibility with third-party libraries

  • Allows the creation of ad hoc and more advanced algorithms

Might require extra code and relatively complex algorithms

Async (library)

  • Simplifies the most common control flow patterns

  • Is still a callback-based solution

  • Good performance

  • Introduces an external dependency

  • Might still not be enough for advanced flows

Promises

  • Greatly simplifies the most common control flow patterns

  • Robust error handling

  • Part of the ES2015 specification

  • Guarantees deferred invocation of onFulfilled and onRejected

  • Requires promisify callback-based APIs

  • Introduces a...