What this book covers

Chapter 1, Welcome to the Node.js Platform, serves as an introduction to the world of Node.js application design by showing the patterns at the core of the platform itself. It covers the Node.js ecosystem and its philosophy, a short introduction to Node.js version 6, ES2015, and the reactor pattern.

Chapter 2, Node.js Essential Patterns, introduces the first steps towards asynchronous coding and design patterns with Node.js discussing and comparing callbacks and the event emitter (observer pattern). This chapter also introduces the Node.js module system and the related module pattern.

Chapter 3, Asynchronous Control Flow Patterns with Callbacks, introduces a set of patterns and techniques for efficiently handling asynchronous control flow in Node.js. This chapter teaches you how to mitigate the "callback hell" problem using plain JavaScript and the async library.

Chapter 4, Asynchronous Control Flow Patterns with ES2015 and Beyond, progresses with the exploration of asynchronous control flows introducing Promises, Generators, and Async-Await.

Chapter 5, Coding with Streams, dives deep into one of the most important patterns in Node.js: streams. It shows you how to process data with transform streams and how to combine them into different layouts.

Chapter 6, Design Patterns, deals with a controversial topic: traditional design patterns in Node.js. It covers the most popular conventional design patterns and shows you how unconventional they might look in Node.js. It also introduces the reader to some emerging design patterns that are specific only to JavaScript and Node.js.

Chapter 7, Wiring Modules, analyzes the different solutions for linking the modules of an application together. In this chapter, you will learn design patterns such as Dependency Injection and service locator.

Chapter 8, Universal JavaScript for Web Applications, explores one of the most interesting capabilities of modern JavaScript web applications: being able to share application code between the frontend and the backend. Across this chapter we learn the basic principles of Universal JavaScript by building a simple web application with React, Webpack, and Babel.

Chapter 9, Advanced Asynchronous Recipes, takes a problem-solution approach to show you how some common coding and design challenges can be solved with ready-to-use solutions.

Chapter 10, Scalability and Architectural Patterns, teaches you the basic techniques and patterns for scaling a Node.js application.

Chapter 11, Messaging and Integration Patterns, presents the most important messaging patterns, teaching you how to build and integrate complex distributed systems using ZMQ and AMQP.