Book Image

Node.js Design Patterns - Third Edition

By : Mario Casciaro, Luciano Mammino
5 (1)
Book Image

Node.js Design Patterns - Third Edition

5 (1)
By: Mario Casciaro, Luciano Mammino

Overview of this book

In this book, we will show you how to implement a series of best practices and design patterns to help you create efficient and robust Node.js applications with ease. We kick off by exploring the basics of Node.js, analyzing its asynchronous event driven architecture and its fundamental design patterns. We then show you how to build asynchronous control flow patterns with callbacks, promises and async/await. Next, we dive into Node.js streams, unveiling their power and showing you how to use them at their full capacity. Following streams is an analysis of different creational, structural, and behavioral design patterns that take full advantage of JavaScript and Node.js. Lastly, the book dives into more advanced concepts such as Universal JavaScript, scalability and messaging patterns to help you build enterprise-grade distributed applications. Throughout the book, you’ll see Node.js in action with the help of several real-life examples leveraging technologies such as LevelDB, Redis, RabbitMQ, ZeroMQ, and many others. They will be used to demonstrate a pattern or technique, but they will also give you a great introduction to the Node.js ecosystem and its set of solutions.
Table of Contents (16 chapters)
14
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15
Index

Summary

In this chapter, we learned how to design Node.js architectures that scale both in capacity and complexity. We saw how scaling an application is not only about handling more traffic or reducing the response time, but it's also a practice to apply whenever we want better availability and tolerance to failures. We saw how these properties often are on the same wavelength, and we understood that scaling early is not a bad practice, especially in Node.js, which allows us to do it easily and with few resources.

The scale cube taught us that applications can be scaled across three dimensions. Throughout this chapter, we focused on the two most important dimensions, the X-and Y-axes, allowing us to discover two essential architectural patterns, namely, load balancing and microservices. You should now know how to start multiple instances of the same Node.js application, how to distribute traffic across them, and how to exploit this setup for other purposes, such...