Node.js实战：专家指南

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"Node.js in Practice_1st Edition" 是一本关于Node.js实践应用的英文原版书籍，无水印，包含PDF、Kindle和ePub格式的电子书。本书由Alex Young和Marc Harter撰写，针对有一定JavaScript基础和Node.js基础知识的读者，提供了115个经过充分测试的示例和实用技巧，旨在帮助读者解决在Node.js开发中遇到的各种问题。书中涵盖了Node.js的基础和实际应用，包括事件驱动编程、闭包的使用、端到端JavaScript应用的架构，以及如何整合外部应用程序和部署等主题。每个章节都采用问题-解决方案的结构，便于理解和应用。作者Alex Young是经验丰富的JavaScript开发者，而Marc Harter则在大型项目中有着丰富的实战经验，他们的专业知识和实践经验贯穿全书。本书分为三个部分： 1. **Node基础**：介绍启动Node.js、全局环境、缓冲区处理、事件机制、流、文件系统操作、网络编程、子进程与外部应用集成等内容。 2. **实战技巧**：涵盖构建高效Web应用、测试与调试、设计可洞察的应用及解决问题、安全部署Node.js应用等。 3. **编写模块**：深入探讨Node.js的核心——编写模块，教你如何写出高质量的模块代码。此外，本书还涉及了如何设计和编写模块，测试和调试Node.js应用程序，以及如何将Node.js集成到现有的系统中。通过阅读本书，读者不仅可以掌握Node.js的基本用法，还能学习到高级技术，并了解如何在实际生产环境中应用Node.js。作者Ben Noordhuis为本书作了序言，强调了这本书对于Node.js开发者的重要价值。Manning出版社提供了购买纸质书赠送电子书的优惠，方便读者在多种设备上阅读。 "Node.js in Practice_1st Edition" 是一本深入浅出的Node.js实践指南，无论你是初学者还是经验丰富的开发者，都能从中受益匪浅，提升你的Node.js开发技能。

preface

When Node.js arrived in 2009, we knew something was different. JavaScript on the server

wasn’t anything new. In fact, server-side JavaScript has existed almost as long as client-

side JavaScript. With Node, the speed of the JavaScript runtimes, coupled with the event-

based parallelism that many JavaScript programmers were already familiar with, were

indeed compelling. And not just for client-side JavaScript developers, which was our

background—Node attracted developers from the systems level to various server-side

backgrounds,

PHP to Ruby to Java. We all found ourselves inside this movement.

At that time, Node was changing a lot, but we stuck with it and learned a whole lot

in the process. From the start, Node focused on making a small, low-level core library

that would provide enough functionality for a large, diverse user space to grow.

Thankfully, this large and diverse user space exists today because of these design deci-

sions early on. Node is a lot more stable now and used in production for numerous

startups as well as established enterprises.

When Manning approached us about writing an intermediate-level book on Node,

we looked at the lessons we had learned as well as common pitfalls and struggles we

saw in the Node community. Although we loved the huge number of truly excellent

third-party modules available to developers, we noticed many developers were getting

less and less education on the core foundations of Node. So we set out to write Node in

Practice to journey into the roots and foundations of Node in a deep and thorough

manner, as well as tackle many issues we personally have faced and have seen others

wrestle with.

ABOUT THIS BOOK

xix

Node.js’s purpose and function. Then chapters 2 through 8 each cover in depth a dif-

ferent core aspect of Node from buffers to streams, networking to child processes.

Part 2 focuses on real-world development recipes. Chapters 9 through 12 will help

you master four highly applicable skills—testing, web development, debugging, and

running Node in production. In addition to Node core modules, these sections

include the use of various third-party modules.

Part 3 guides you through creating your own Node modules in a straightforward

manner that ties in all kinds of ways to use npm commands for packaging, running,

testing, benchmarking, and sharing modules. It also includes helpful tips on version-

ing projects effectively.

There are 115 techniques in the book, each module covering a specific Node.js

topic or task, and each divided into practical Problem/Solution/Discussion sections.

Code conventions and downloads

All source code in the book is in a

fixed-width

font

this

, which sets it off from

the surrounding text. In many listings, the code is annotated to point out the key con-

cepts, and numbered bullets are sometimes used in the text to provide additional

information about the code.

This book’s coding style is based on the Google JavaScript Style Guide.

That

means we’ve put

var

statements on their own lines, used

camelCase

to format func-

tion and variable names, and we always use semicolons. Our style is a composite of the

various JavaScript styles used in the Node community.

Most of the code shown in the book can be found in various forms in the sample

source code that accompanies it. The sample code can be downloaded free of charge

from the Manning website at www.manning.com/Node.jsinPractice, as well as from

GitHub at the following link: https://github.com/alexyoung/nodeinpractice.

Author Online forum

Purchase of Node.js in Practice includes free access to a private web forum run by Man-

ning Publications where you can make comments about the book, ask technical ques-

tions, and receive help from the authors and from other users. To access the forum

and subscribe to it, point your web browser to www.manning.com/Node.jsinPractice.

This page provides information on how to get on the forum once you’re registered,

what kind of help is available, and the rules of conduct on the forum.

The Author Online forum and the archives of previous discussions will be accessi-

ble from the publisher’s website as long as the book is in print.

You can also contact the authors at the following Google Group

URL: https://

groups.google.com/forum/#!forum/nodejsinpractice.

https://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml

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