Node.js实战：Manning出版社高清PDF

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"Node.js in Action 是一本由 Mike Cantelon、Marc Harter、T.J. Holowaychuk 和 Nathan Rajlich 合著的实战指南，由 Manning 出版社出版，Isaac Z. Schlueter 撰写序言。本书主要针对 Node.js 技术，深入探讨了如何在 Web 开发中运用 Node.js。" 在这本《Node.js in Action》中，读者将学习到： 1. **Node.js基础**：介绍Node.js的运行环境、事件驱动模型和非阻塞I/O，以及V8 JavaScript引擎，帮助读者理解Node.js为何能实现高性能的网络应用。 2. **模块系统**：深入讲解Node.js的模块化结构，包括内置模块、npm（Node Package Manager）的使用，以及如何创建和发布自定义模块，使开发者能够利用丰富的社区资源构建项目。 3. **Web开发**：详述如何用Node.js构建HTTP服务器，处理路由、请求和响应，以及与数据库集成，如使用MongoDB或MySQL进行数据存储和检索。 4. **实时通信**：讨论WebSocket和Socket.IO等技术，展示如何实现实时双向通信，构建聊天应用、游戏服务器或其他实时更新的Web应用。 5. **性能优化**：分享性能监控和调试技巧，如CPU剖析、内存分析和错误日志记录，以确保应用程序高效稳定运行。 6. **测试与部署**：介绍单元测试框架（如Mocha）、持续集成工具，以及如何在AWS、Heroku等平台上部署Node.js应用，确保代码质量并简化运维流程。 7. **最佳实践**：提供关于代码组织、设计模式和最佳编码实践的指导，帮助开发者遵循良好的编程习惯。 8. **案例研究**：通过真实项目示例，展示Node.js在实际开发中的应用，涵盖API服务器、文件处理系统、流媒体服务等多个场景。这本书适合已经有一定JavaScript基础，想要进一步掌握Node.js技术的开发者。无论你是Web开发新手还是经验丰富的开发者，都能从中获得宝贵的知识和实践经验。通过阅读本书，读者将能够熟练地运用Node.js开发复杂、高性能的Web应用，并了解这个生态系统中的最新趋势和发展。

preface

In early 2011, when Manning approached us with the idea of writing a book on

Node.js, the state of the Node community was much different than it is now. The com-

munity was small and, despite the fact that Node was starting to attract a great deal of

interest, Node was still considered a bleeding-edge technology by the mainstream

development community. No books had yet been written about it, and although the

idea of writing a book was daunting, we decided to go for it.

Given our respective development inclinations, we wanted to create a book that

not only focused on the use of Node for web application development, but also

explored other interesting potential uses. We wanted to provide a way for web applica-

tion developers using conventional technologies to harness Node’s vision of bringing

asynchronous development to the server.

We’ve worked for more than two years on the book, and during its writing the tech-

nology has evolved, so we’ve updated the book accordingly. In addition to the technol-

ogy changing, the community has also evolved. It is now much larger, and many

established companies have embraced Node.

For web application developers looking to try something different, this is a great

time to learn Node, and we hope our book helps you learn the technology quickly and

have fun doing so.

www.it-ebooks.info

ACKNOWLEDGMENTS xvii

I’d also like to thank my partner Malcolm for encouraging me during the book’s cre-

ation and for her patience during the times when writing kept me constantly cooped

up at home. A big thanks, as well, to my parents for bringing me up with a passion for

creativity and exploration, and for putting up with my less-than-balanced childhood

obsession with 8-bit machines. I’d also like to thank my grandparents for gifting me

with the machine that got me hooked, for life, on programming: the Commodore 64.

During the process of writing the book, T.J. and Nathan’s expertise was invaluable

and their good humor much appreciated. I thank them for taking a leap of faith and

agreeing to collaborate. Marc Harter was also a huge help, chipping in on the Hercu-

lean task of editing, proofing, and writing content that tied everything together.

MARC HARTER

Thanks to Ryan Dahl, who inspired me to take a serious look at server-side JavaScript

programming nearly four years ago. Thanks to Ben Noordhuis, an invaluable

resource on the inner workings of Node. Thanks to Bert Bates, who believed in me,

challenged me, and was always willing to help during the writing process. Thanks to

Mike, Nate, and T.J. for welcoming me in at the 11th hour. It was an honor working

with them. Thanks especially to my wife and friend Hannah, whose courage and kind-

ness carried me into and through this new venture.

NATHAN RAJLICH

I would like to start by thanking Guillermo Rauch for taking me in and helping me

find my place in the Node.js community. I would also like to thank David Blickstein

for encouraging me to take on this book project. I thank Ryan Dahl for starting the

Node.js movement, and Isaac Schlueter for doing an excellent job of stewarding this

ship for the last couple for years. Thanks also to my family, my friends, and my girl-

friend for putting up with the sleepless nights and wide range of emotions exhibited

during the process. And of course a huge thanks to my parents for supporting me

throughout the years in my computing endeavors. I wouldn’t be where I am today

without them at my side.

www.it-ebooks.info

ABOUT THIS BOOK xix

functionality to web applications. Chapters 8 provides an introduction to the Express

framework, and chapter 9 guides the reader through advanced Express usage.

With the basics of web development covered, part 2 concludes after exploring two

more related topics. Chapter 10 guides the reader through the use of various Node

testing frameworks. Chapter 11 then teaches how templating can be used in Node

web applications to separate presentation of data from logic.

Part 3 moves on to look at things beyond web development that can be done with

Node. Chapter 12 talks about how Node applications can be deployed to production

servers, how uptime can be maintained, and how performance can be maximized.

Chapter 13 explains how non-HTTP applications can be created, how to use the

Socket.io framework to create real-time applications, and the use of a number of handy

build-in Node APIs. Chapter 14, the final chapter, discusses how the Node community

works and how Node creations can be published using the Node Package Manager.

Code conventions and downloads

The code in this book follows common JavaScript conventions. Spaces, rather than

tabs, are used for indentation. Lines longer than 80 characters are avoided. In many

listings, the code is annotated to point out key concepts.

A single statement per line is used and semicolons are added at the end of simple

statements. For blocks of code, where one or more statements are enclosed in curly

braces, the left curly brace is placed at the end of the opening line of the block. The

right curly brace is indented so it’s vertically aligned with the opening line of the

block.

Source code for the examples in this book is available for download from the pub-

lisher’s website at www.manning.com/Node.jsinAction.

Author Online

Purchase of Node.js in Action 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.jsinAction.

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.

Manning’s commitment to our readers is to provide a venue where a meaningful

dialog between individual readers and between readers and the authors can take

place. It’s not a commitment to any specific amount of participation on the part of the

authors, whose contribution to the forum remains voluntary (and unpaid). We sug-

gest you try asking the authors some challenging questions lest their interest stray!

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.

www.it-ebooks.info

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