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

Exercises

  • 7.1 Console color factory: Create a class called ColorConsole that has just one empty method called log(). Then, create three subclasses: RedConsole, BlueConsole, and GreenConsole. The log() method of every ColorConsole subclass will accept a string as input and will print that string to the console using the color that gives the name to the class. Then, create a factory function that takes color as input, such as 'red', and returns the related ColorConsole subclass. Finally, write a small command-line script to try the new console color factory. You can use this Stack Overflow answer as a reference for using colors in the console: nodejsdp.link/console-colors.
  • 7.2 Request builder: Create your own Builder class around the built-in http.request() function. The builder must be able to provide at least basic facilities to specify the HTTP method, the URL, the query component of the URL, the header parameters, and the eventual body data to be sent...