Inside Nginx

Name: Inside Nginx
ISBN: 9787115307620

高群凯Posts & Telecom Press2013

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Chapters: 17
ISBN: 9787115307620

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Summary

Inside Nginx is a technical monograph on Nginx that takes the source code as its object of analysis, not a quick-reference manual of configuration directives. The author, Gao Qunkai, holds a master's degree from the School of Computer Science at Chongqing University and has long worked on Linux and high-performance services; this book is the fruit of years of reading, tracing, debugging, and continually testing Nginx source code against practice. The book has 14 chapters and 3 appendices (334 pages). It opens with the preparations for source code analysis: Nginx's main features, source download and directory structure, common analysis tools, testing aids, and how to compile and run it; Chapter 2 systematically covers tracing and debugging, including debugging with gdb, tracking with log messages, debugging with strace and pstack, obtaining the complete execution flow, and instrumenting the code. It then goes deeper layer by layer: Chapter 3 analyzes the overall architecture and process model, covering the master process, worker processes, the cache manager and loader processes, inter-process communication, shared memory, the slab mechanism, and signal handling; Chapter 4 examines core data structures such as memory pools, hash tables, and radix trees; Chapter 5 covers configuration file format, parsing flow, organization, and inheritance; Chapter 6 surveys the four module types—handler, filter, upstream, and load-balance; Chapter 7 discusses the I/O multiplexing model, epoll, event handling, load balancing, and timeout management; Chapter 8 explains the variable mechanism and script engine; Chapters 9 to 11 walk through the full client request path—connection establishment, processing, response, subrequests, connection close—as well as Location matching, Server matching, try_files, and dynamic page (FastCGI/PHP) request handling; Chapters 12 to 14 go deep into filter modules, load-balancing strategies, and access control respectively. The appendices provide practical material such as compiling modules and runtime configuration.

Editor's review

“源码之前，了无秘密。”这句话几乎概括了本书的全部价值。市面上的Nginx书大多在教你怎么写配置、怎么调参数，而这本书把镜头对准了C源码本身：一个请求从监听套接字进来，如何被epoll唤醒、如何定位到Location、如何经过过滤模块链、又如何在连接关闭时完成延迟关闭，全部都能在代码层面看到答案。本书的难得之处在于“可操作性”。作者先花两章讲清楚怎么读：如何把Nginx绑定到gdb、怎么用日志和strace/pstack跟踪、怎么加桩打印执行流程，读者不会一上来就被庞大的源码淹没。随后的进程模型、内存池、Hash与Radix树、配置解析与继承、变量与脚本引擎，正是理解Nginx二次开发和排查疑难问题的地基。作者长期在Linux系统底层与高性能服务一线工作，书中许多细节来自真实调试经验，而非二手转述。写作于1.x时代，个别代码细节与新版Nginx存在差异，但其架构逻辑和阅读方法至今仍然有效。适合愿意花时间下潜的读者。

Who it's for

A good fit for

希望从源码层面理解Nginx架构的中高级后端与系统程序员
需要开发Nginx模块或做二次开发的C语言工程师
负责高并发站点、遇到疑难问题想弄懂底层机理的运维工程师
计算机相关专业、具备C语言与操作系统基础的高年级学生

Not a good fit for

只想学习Nginx配置写法、快速上手的初学者
完全没有C语言和Linux系统编程经验的读者
期望书中提供现成配置模板或运维案例手册的人

Reading tips

先对照源码目录与官方文档读第1、2章，把gdb、日志、strace等跟踪环境搭好，再进入后续章节。
按“进程模型—数据结构—配置解析—模块—事件机制—请求流程”的顺序读，避免跳读造成断层。
每读一章就对照相应版本的Nginx源码打桩、加日志并单步跟踪，以代码亲自验证书中结论。
注意本书写作于2013年前后，个别函数与结构体在新版本中已有调整，阅读时以自己使用的源码版本为准。

About the publisher

Posts & Telecom Press China · Founded in 1953

Posts & Telecom Press is known for its strengths in science and technology, computing, and information and communications titles, and has extended its publishing into photography, art, software learning, and inspirational growth, giving it a fairly diverse range. Its catalog includes computing and communications works such as Refactoring and Patterns (Revised Edition) and Huawei Switch Learning Guide (Second Edition), alongside bilingual collector's editions such as The Little Prince (Chinese-English-French illustrated collector's edition), The Great Gatsby, and Three Days to See. Beijing Ten Years: 1980-1990 and Ghost Blade: WLOP Personal Illustration Collection reflect its presence in photography and art. Its authors include Antoine de Saint-Exupéry, Helen Keller, Joshua Kerievsky, Wang Da, Zhang Zhaozeng, and WLOP.

Chapter 1 Preparations for Source Code Analysis
Chapter 2 Tracing and Debugging
Chapter 3 Process Model
Chapter 4 Data Structures
Chapter 5 Configuration Parsing
Chapter 6 Module Overview
Chapter 7 Event Management Mechanism
Chapter 8 Variable Mechanism
Chapter 9 Request Processing and Response
Chapter 10 Request Location
Chapter 11 Dynamic Page Request Handling
Chapter 12 Filter Modules
Chapter 13 Load Balancing
Chapter 14 Access Control
Appendix A
Appendix B
Appendix C

FAQ

这本书是讲Nginx配置怎麼写的吗？

不是。本书的重点是剖析Nginx源代码，探究其功能结构与内部实现原理，属于源码分析类专著，而非配置指令使用手册。想学配置写法应看官方文档或入门类书籍。

读这本书需要什么基础？

需要具备C语言阅读能力，了解Linux下的进程、信号、共享内存、socket与I/O多路复用等系统编程概念。缺少这些基础时，读第3、7、9章会相当吃力。

书中的源码基于哪个Nginx版本？

本书出版于2013年，剖析的是当时的Nginx 1.x版本。后续版本在部分函数、结构体和模块机制上有调整，阅读时应以自己实际使用的源码版本对照。

附录讲了什么内容？

全书有3个附录，主要提供Nginx的编译模块与运行配置等实用资料，便于读者搭建自己的分析与调试环境。

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About the author

高群凯 Author

Gao Qunkai is an author of computer technology books about whom little public information is available; the library currently holds only one work by him, Deep Analysis of Nginx. Judging from the title and the common category of General Computing, the book is a technical study of the Nginx server software, aimed at developers and operations personnel who want to understand its internal mechanisms and implementation principles. The author's approach, signaled by "deep analysis," suggests a focus on source-level structural explanation and principle-oriented discussion rather than a general beginner's guide or a list of configurations. Because the library lacks reliable information about the author's life, education, or professional experience, no further introduction to the person is possible; readers should treat the book as a technical monograph centered on Nginx's internal implementation, using its analysis to deepen their understanding of server architecture and runtime behavior.