Node.js实践：英文版技术精华

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"Node.js in Practice 是一本全英文的技术书籍，由Alex Young和Marc Harter共同撰写，并由Ben Noordhuis作序。本书详细介绍了Node.js的实际应用，旨在帮助开发者掌握这一技术。书中涵盖了115种技术技巧，适合对Node.js感兴趣的读者，无论是初创公司还是成熟企业，都能从中受益。" 在Node.js的发展初期，它以其轻量级的核心库和对大型、多样化用户空间的支持而受到关注。这个设计决策为今天的稳定性和广泛应用奠定了基础。如今，Node.js已经成为许多初创企业和知名企业的生产环境中的首选技术，其稳定性显著提高。这本书深入探讨了Node.js的关键特性，包括其非阻塞I/O模型，事件驱动的架构以及JavaScript在服务器端的运用。Node.js使得开发者可以使用同一门语言（JavaScript）处理前端和后端的开发，大大提高了开发效率。书中的115个技术技巧涵盖了从基础概念到高级用法，包括模块系统、网络编程、异步编程、性能优化、错误处理和调试等多个方面。 "Angular"和"JavaScript"是这本书关联的标签。Angular是一个流行的前端框架，与Node.js结合使用，可以构建完整的全栈Web应用。本书可能也讨论了如何在Node.js环境中集成和使用Angular进行客户端开发。通过阅读这本书，读者将能够学习如何利用Node.js构建高性能的网络应用，理解Node.js生态系统中的各种工具和库，如npm（Node包管理器），并掌握构建可扩展的服务器端应用的最佳实践。此外，书中可能还涉及了如何与其他技术（如数据库系统、RESTful API、WebSocket等）集成，以及如何利用持续集成和测试策略来确保代码质量和项目稳定性。《Node.js in Practice》是一本全面介绍Node.js实战经验的书籍，适合已经有一定JavaScript基础，想要深入了解和运用Node.js进行实际开发的程序员。通过学习，开发者不仅可以提升技术技能，还能了解到如何在不断变化的Web开发环境中，利用Node.js的优势构建健壮、高效的解决方案。

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

www.allitebooks.com

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