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

  • Exercise 9.1 Logging with Strategy: Implement a logging component having at least the following methods: debug(), info(), warn(), and error(). The logging component should also accept a strategy that defines where the log messages are sent. For example, we might have a ConsoleStrategy to send the messages to the console, or a FileStrategy to save the log messages to a file.
  • Exercise 9.2 Logging with Template: Implement the same logging component we defined in the previous exercise, but this time using the Template pattern. We would then obtain a ConsoleLogger class to log to the console or FileLogger class to log to a file. Appreciate the differences between the Template and the Strategy approaches.
  • Exercise 9.3 Warehouse item: Imagine we are working on a warehouse management program. Our next task is to create a class to model a warehouse item and help track it. Such a WarehouseItem class has a constructor, which accepts an id and the initial...