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- <a href="../网络编程/非阻塞模式下send和recv函数的返回值.html">
-
-
- 非阻塞模式下 send 和 recv 函数的返回值
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="2.1.7" data-path="../网络编程/服务器开发通信协议设计介绍.html">
-
- <a href="../网络编程/服务器开发通信协议设计介绍.html">
-
-
- 服务器开发通信协议设计介绍
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="2.1.8" data-path="../网络编程/TCP协议如何解决粘包、半包问题.html">
-
- <a href="../网络编程/TCP协议如何解决粘包、半包问题.html">
-
-
- TCP 协议如何解决粘包、半包问题
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="2.1.9" data-path="../网络编程/网络通信中收发数据的正确姿势.html">
-
- <a href="../网络编程/网络通信中收发数据的正确姿势.html">
-
-
- 网络通信中收发数据的正确姿势
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="2.1.10" data-path="../网络编程/服务器端发数据时,如果对端一直不收,怎么办?.html">
-
- <a href="../网络编程/服务器端发数据时,如果对端一直不收,怎么办?.html">
-
-
- 服务器端发数据时,如果对端一直不收,怎么办?
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
-
-
-
- <li class="divider"></li>
-
-
-
- <li class="chapter " data-level="3.1" data-path="../程序员必知必会的网络命令/">
-
- <a href="../程序员必知必会的网络命令/">
-
-
- 程序员必知必会的网络命令
-
- </a>
-
-
- <ul class="articles">
-
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- <li class="chapter " data-level="3.1.1" data-path="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
-
- <a href="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
-
-
- 利用telnet命令发电子邮件
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="3.1.2" data-path="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
-
- <a href="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
-
-
- 做Java或者C++开发都应该知道的lsof命令
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="3.1.3" data-path="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
-
- <a href="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
-
-
- Linux网络故障排查的瑞士军刀nc命令
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="3.1.4" data-path="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
-
- <a href="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
-
-
- Linux tcpdump使用详解
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="3.1.5" data-path="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
-
- <a href="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
-
-
- 从抓包的角度分析connect函数的连接过程
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="3.1.6" data-path="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
-
- <a href="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
-
-
- 服务器开发中网络数据分析与故障排查经验漫谈
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
-
-
-
- <li class="header">Part II</li>
-
-
-
- <li class="chapter " data-level="4.1" data-path="../高性能服务器框架设计/">
-
- <a href="../高性能服务器框架设计/">
-
-
- 高性能服务器框架设计
-
- </a>
-
-
- <ul class="articles">
-
-
- <li class="chapter " data-level="4.1.1" data-path="../高性能服务器框架设计/主线程与工作线程的分工.html">
-
- <a href="../高性能服务器框架设计/主线程与工作线程的分工.html">
-
-
- 主线程与工作线程的分工
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.2" data-path="../高性能服务器框架设计/Reactor模式.html">
-
- <a href="../高性能服务器框架设计/Reactor模式.html">
-
-
- Reactor模式
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.3" data-path="../高性能服务器框架设计/实例:一个服务器程序的架构介绍.html">
-
- <a href="../高性能服务器框架设计/实例:一个服务器程序的架构介绍.html">
-
-
- 实例:一个服务器程序的架构介绍
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.4" data-path="../高性能服务器框架设计/错误码系统的设计.html">
-
- <a href="../高性能服务器框架设计/错误码系统的设计.html">
-
-
- 错误码系统的设计
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.5" data-path="../高性能服务器框架设计/日志系统的设计.html">
-
- <a href="../高性能服务器框架设计/日志系统的设计.html">
-
-
- 日志系统的设计
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.6" data-path="../高性能服务器框架设计/如何设计断线自动重连机制.html">
-
- <a href="../高性能服务器框架设计/如何设计断线自动重连机制.html">
-
-
- 如何设计断线自动重连机制
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.7" data-path="../高性能服务器框架设计/心跳包机制设计详解.html">
-
- <a href="../高性能服务器框架设计/心跳包机制设计详解.html">
-
-
- 心跳包机制设计详解
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.8" data-path="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
-
- <a href="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
-
-
- 业务数据处理一定要单独开线程吗
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="4.1.9" data-path="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
-
- <a href="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
-
-
- C++ 高性能服务器网络框架设计细节
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
-
-
-
- <li class="divider"></li>
-
-
-
- <li class="chapter " data-level="5.1" data-path="../服务器开发案例实战/">
-
- <a href="../服务器开发案例实战/">
-
-
- 服务器开发案例实战
-
- </a>
-
-
- <ul class="articles">
-
-
- <li class="chapter " data-level="5.1.1" data-path="../服务器开发案例实战/从零实现一个http服务器.html">
-
- <a href="../服务器开发案例实战/从零实现一个http服务器.html">
-
-
- 从零实现一个http服务器
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.2" data-path="../服务器开发案例实战/从零实现一款12306刷票软件.html">
-
- <a href="../服务器开发案例实战/从零实现一款12306刷票软件.html">
-
-
- 从零实现一款12306刷票软件
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.3" data-path="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
-
- <a href="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
-
-
- 从零实现一个邮件收发客户端
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.4" data-path="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
-
- <a href="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
-
-
- 从零开发一个WebSocket服务器
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.5" data-path="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
-
- <a href="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
-
-
- 从零学习开源项目系列(一) 从一款多人联机实时对战游戏开始
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.6" data-path="../服务器开发案例实战/2最后一战概况.html">
-
- <a href="../服务器开发案例实战/2最后一战概况.html">
-
-
- 从零学习开源项目系列(二) 最后一战概况
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.7" data-path="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
-
- <a href="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
-
-
- 从零学习开源项目系列(三) CSBattleMgr服务源码研究
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="5.1.8" data-path="../服务器开发案例实战/4LogServer源码探究.html">
-
- <a href="../服务器开发案例实战/4LogServer源码探究.html">
-
-
- 从零学习开源项目系列(四)LogServer源码探究
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
-
-
-
- <li class="header">Part III</li>
-
-
-
- <li class="chapter " data-level="6.1" data-path="../TeamTalk源码解析/">
-
- <a href="../TeamTalk源码解析/">
-
-
- TeamTalk IM源码分析
-
- </a>
-
-
- <ul class="articles">
-
-
- <li class="chapter " data-level="6.1.1" data-path="../TeamTalk源码解析/01TeamTalk介绍.html">
-
- <a href="../TeamTalk源码解析/01TeamTalk介绍.html">
-
-
- 01 TeamTalk介绍
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.2" data-path="../TeamTalk源码解析/02服务器端的程序的编译与部署.html">
-
- <a href="../TeamTalk源码解析/02服务器端的程序的编译与部署.html">
-
-
- 02 服务器端的程序的编译与部署
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.3" data-path="../TeamTalk源码解析/03服务器端的程序架构介绍.html">
-
- <a href="../TeamTalk源码解析/03服务器端的程序架构介绍.html">
-
-
- 03 服务器端的程序架构介绍
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.4" data-path="../TeamTalk源码解析/04服务器端db_proxy_server源码分析.html">
-
- <a href="../TeamTalk源码解析/04服务器端db_proxy_server源码分析.html">
-
-
- 04 服务器端db_proxy_server源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.5" data-path="../TeamTalk源码解析/05服务器端msg_server源码分析.html">
-
- <a href="../TeamTalk源码解析/05服务器端msg_server源码分析.html">
-
-
- 05 服务器端msg_server源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.6" data-path="../TeamTalk源码解析/06服务器端login_server源码分析.html">
-
- <a href="../TeamTalk源码解析/06服务器端login_server源码分析.html">
-
-
- 06 服务器端login_server源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.7" data-path="../TeamTalk源码解析/07服务器端msfs源码分析.html">
-
- <a href="../TeamTalk源码解析/07服务器端msfs源码分析.html">
-
-
- 07 服务器端msfs源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.8" data-path="../TeamTalk源码解析/08服务器端file_server源码分析.html">
-
- <a href="../TeamTalk源码解析/08服务器端file_server源码分析.html">
-
-
- 08 服务器端file_server源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.9" data-path="../TeamTalk源码解析/09服务器端route_server源码分析.html">
-
- <a href="../TeamTalk源码解析/09服务器端route_server源码分析.html">
-
-
- 09 服务器端route_server源码分析
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.10" data-path="../TeamTalk源码解析/10开放一个TeamTalk测试服务器地址和几个测试账号.html">
-
- <a href="../TeamTalk源码解析/10开放一个TeamTalk测试服务器地址和几个测试账号.html">
-
-
- 10 开放一个TeamTalk测试服务器地址和几个测试账号
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="6.1.11" data-path="../TeamTalk源码解析/11pc客户端源码分析.html">
-
- <a href="../TeamTalk源码解析/11pc客户端源码分析.html">
-
-
- 11 pc客户端源码分析
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
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-
-
- <li class="divider"></li>
-
-
-
- <li class="chapter " data-level="7.1" data-path="../libevent源码深度剖析/">
-
- <a href="../libevent源码深度剖析/">
-
-
- libevent源码深度剖析
-
- </a>
-
-
- <ul class="articles">
-
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- <li class="chapter " data-level="7.1.1" data-path="../libevent源码深度剖析/libevent源码深度剖析01.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析01.html">
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- libevent源码深度剖析01
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.1.2" data-path="../libevent源码深度剖析/libevent源码深度剖析02.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析02.html">
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- libevent源码深度剖析02
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.1.3" data-path="../libevent源码深度剖析/libevent源码深度剖析03.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析03.html">
-
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- libevent源码深度剖析03
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.1.4" data-path="../libevent源码深度剖析/libevent源码深度剖析04.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析04.html">
-
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- libevent源码深度剖析04
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.5" data-path="../libevent源码深度剖析/libevent源码深度剖析05.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析05.html">
-
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- libevent源码深度剖析05
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.1.6" data-path="../libevent源码深度剖析/libevent源码深度剖析06.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析06.html">
-
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- libevent源码深度剖析06
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- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.7" data-path="../libevent源码深度剖析/libevent源码深度剖析07.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析07.html">
-
-
- libevent源码深度剖析07
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.8" data-path="../libevent源码深度剖析/libevent源码深度剖析08.html">
-
- <a href="../libevent源码深度剖析/libevent源码深度剖析08.html">
-
-
- libevent源码深度剖析08
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.9" data-path="../libevent源码深度剖析/libevent源码深度剖析09.html">
-
- <a href="../libevent源码深度剖析/libevent源码深度剖析09.html">
-
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- libevent源码深度剖析09
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.10" data-path="../libevent源码深度剖析/libevent源码深度剖析10.html">
-
- <a href="../libevent源码深度剖析/libevent源码深度剖析10.html">
-
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- libevent源码深度剖析10
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.1.11" data-path="../libevent源码深度剖析/libevent源码深度剖析11.html">
-
- <a href="../libevent源码深度剖析/libevent源码深度剖析11.html">
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- libevent源码深度剖析11
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.1.12" data-path="../libevent源码深度剖析/libevent源码深度剖析12.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析12.html">
-
-
- libevent源码深度剖析12
-
- </a>
-
-
- </li>
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- <li class="chapter " data-level="7.1.13" data-path="../libevent源码深度剖析/libevent源码深度剖析13.html">
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- <a href="../libevent源码深度剖析/libevent源码深度剖析13.html">
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- libevent源码深度剖析13
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- </a>
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- </li>
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- </ul>
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- </li>
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- <a href="./">
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- leveldb源码分析
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- </a>
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- <ul class="articles">
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- leveldb源码分析1
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- <li class="chapter " data-level="7.2.2" data-path="leveldb源码分析2.html">
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- leveldb源码分析2
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- </a>
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- <li class="chapter " data-level="7.2.3" data-path="leveldb源码分析3.html">
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- leveldb源码分析3
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- </a>
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- <li class="chapter " data-level="7.2.4" data-path="leveldb源码分析4.html">
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- leveldb源码分析4
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- </a>
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- <li class="chapter " data-level="7.2.5" data-path="leveldb源码分析5.html">
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- leveldb源码分析5
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- </a>
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- <li class="chapter " data-level="7.2.6" data-path="leveldb源码分析6.html">
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- leveldb源码分析6
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- <li class="chapter " data-level="7.2.7" data-path="leveldb源码分析7.html">
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- leveldb源码分析7
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- <li class="chapter " data-level="7.2.8" data-path="leveldb源码分析8.html">
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- leveldb源码分析8
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- leveldb源码分析9
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- <li class="chapter " data-level="7.2.10" data-path="leveldb源码分析10.html">
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- leveldb源码分析10
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- <li class="chapter " data-level="7.2.11" data-path="leveldb源码分析11.html">
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- leveldb源码分析11
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- </a>
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- <li class="chapter " data-level="7.2.12" data-path="leveldb源码分析12.html">
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- leveldb源码分析12
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- </a>
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- <li class="chapter " data-level="7.2.13" data-path="leveldb源码分析13.html">
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- leveldb源码分析13
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- </a>
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- <li class="chapter " data-level="7.2.14" data-path="leveldb源码分析14.html">
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- leveldb源码分析14
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- </a>
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- </li>
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- <li class="chapter " data-level="7.2.15" data-path="leveldb源码分析15.html">
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- <a href="leveldb源码分析15.html">
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- leveldb源码分析15
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- </a>
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- </li>
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- <li class="chapter " data-level="7.2.16" data-path="leveldb源码分析16.html">
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- leveldb源码分析16
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.2.17" data-path="leveldb源码分析17.html">
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- <a href="leveldb源码分析17.html">
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- leveldb源码分析17
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.2.18" data-path="leveldb源码分析18.html">
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- <a href="leveldb源码分析18.html">
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- leveldb源码分析18
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.2.19" data-path="leveldb源码分析19.html">
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- <a href="leveldb源码分析19.html">
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-
- leveldb源码分析19
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.2.20" data-path="leveldb源码分析20.html">
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- <a href="leveldb源码分析20.html">
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-
- leveldb源码分析20
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="7.2.21" data-path="leveldb源码分析21.html">
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- <a href="leveldb源码分析21.html">
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-
- leveldb源码分析21
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="7.2.22" data-path="leveldb源码分析22.html">
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- <a href="leveldb源码分析22.html">
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-
- leveldb源码分析22
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- </a>
-
-
- </li>
-
- </ul>
-
- </li>
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-
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- <li class="divider"></li>
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- <li class="chapter " data-level="8.1" data-path="../Memcached源码分析/">
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- <a href="../Memcached源码分析/">
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-
- Memcached源码分析
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- </a>
-
-
- <ul class="articles">
-
-
- <li class="chapter " data-level="8.1.1" data-path="../Memcached源码分析/00服务器资源调整.html">
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- <a href="../Memcached源码分析/00服务器资源调整.html">
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- 00 服务器资源调整
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="8.1.2" data-path="../Memcached源码分析/01初始化参数解析.html">
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- <a href="../Memcached源码分析/01初始化参数解析.html">
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-
- 01 初始化参数解析
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- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.3" data-path="../Memcached源码分析/02网络监听的建立.html">
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- <a href="../Memcached源码分析/02网络监听的建立.html">
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-
- 02 网络监听的建立
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="8.1.4" data-path="../Memcached源码分析/03网络连接建立.html">
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- <a href="../Memcached源码分析/03网络连接建立.html">
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-
- 03 网络连接建立
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="8.1.5" data-path="../Memcached源码分析/04内存初始化.html">
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- <a href="../Memcached源码分析/04内存初始化.html">
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-
- 04 内存初始化
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- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.6" data-path="../Memcached源码分析/05资源初始化.html">
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- <a href="../Memcached源码分析/05资源初始化.html">
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-
- 05 资源初始化
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.7" data-path="../Memcached源码分析/06get过程.html">
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- <a href="../Memcached源码分析/06get过程.html">
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-
- 06 get过程
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- </a>
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-
- </li>
-
- <li class="chapter " data-level="8.1.8" data-path="../Memcached源码分析/07cas属性.html">
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- <a href="../Memcached源码分析/07cas属性.html">
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-
- 07 cas属性
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.9" data-path="../Memcached源码分析/08内存池.html">
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- <a href="../Memcached源码分析/08内存池.html">
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-
- 08 内存池
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.10" data-path="../Memcached源码分析/09连接队列.html">
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- <a href="../Memcached源码分析/09连接队列.html">
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-
- 09 连接队列
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.11" data-path="../Memcached源码分析/10Hash表操作.html">
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- <a href="../Memcached源码分析/10Hash表操作.html">
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-
- 10 Hash表操作
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.12" data-path="../Memcached源码分析/12set操作.html">
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- <a href="../Memcached源码分析/12set操作.html">
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-
- 12 set操作
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.13" data-path="../Memcached源码分析/13do_item_alloc操作.html">
-
- <a href="../Memcached源码分析/13do_item_alloc操作.html">
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-
- 13 do_item_alloc操作
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.14" data-path="../Memcached源码分析/14item结构.html">
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- <a href="../Memcached源码分析/14item结构.html">
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-
- 14 item结构
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.15" data-path="../Memcached源码分析/15Hash表扩容.html">
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- <a href="../Memcached源码分析/15Hash表扩容.html">
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-
- 15 Hash表扩容
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.16" data-path="../Memcached源码分析/16线程交互.html">
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- <a href="../Memcached源码分析/16线程交互.html">
-
-
- 16 线程交互
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="8.1.17" data-path="../Memcached源码分析/17状态机.html">
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- <a href="../Memcached源码分析/17状态机.html">
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-
- 17 状态机
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- </a>
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-
- </li>
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- </ul>
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- </li>
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-
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- <li class="divider"></li>
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- <li class="chapter " data-level="9.1" data-path="../游戏开发专题/">
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- 游戏开发专题
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-
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- <ul class="articles">
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- <li class="chapter " data-level="9.1.1" data-path="../游戏开发专题/1游戏服务器开发的基本体系与服务器端开发的一些建议.html">
-
- <a href="../游戏开发专题/1游戏服务器开发的基本体系与服务器端开发的一些建议.html">
-
-
- 1 游戏服务器开发的基本体系与服务器端开发的一些建议
-
- </a>
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-
- </li>
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- <li class="chapter " data-level="9.1.2" data-path="../游戏开发专题/2网络游戏服务器开发框架设计介绍.html">
-
- <a href="../游戏开发专题/2网络游戏服务器开发框架设计介绍.html">
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-
- 2 网络游戏服务器开发框架设计介绍
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.3" data-path="../游戏开发专题/3游戏后端开发需要掌握的知识.html">
-
- <a href="../游戏开发专题/3游戏后端开发需要掌握的知识.html">
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-
- 3 游戏后端开发需要掌握的知识
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="9.1.4" data-path="../游戏开发专题/4关于游戏服务端架构的整理.html">
-
- <a href="../游戏开发专题/4关于游戏服务端架构的整理.html">
-
-
- 4 关于游戏服务端架构的整理
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="9.1.5" data-path="../游戏开发专题/5各类游戏对应的服务端架构.html">
-
- <a href="../游戏开发专题/5各类游戏对应的服务端架构.html">
-
-
- 5 各类游戏对应的服务端架构
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="9.1.6" data-path="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
-
- <a href="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
-
-
- 6 从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.7" data-path="../游戏开发专题/7QQ游戏百万人同时在线服务器架构实现.html">
-
- <a href="../游戏开发专题/7QQ游戏百万人同时在线服务器架构实现.html">
-
-
- 7 QQ游戏百万人同时在线服务器架构实现
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.8" data-path="../游戏开发专题/8大型多人在线游戏服务器架构设计.html">
-
- <a href="../游戏开发专题/8大型多人在线游戏服务器架构设计.html">
-
-
- 8 大型多人在线游戏服务器架构设计
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="9.1.9" data-path="../游戏开发专题/9百万用户级游戏服务器架构设计.html">
-
- <a href="../游戏开发专题/9百万用户级游戏服务器架构设计.html">
-
-
- 9 百万用户级游戏服务器架构设计
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.10" data-path="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
-
- <a href="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
-
-
- 10 十万在线的WebGame的数据库设计思路
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.11" data-path="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
-
- <a href="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
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-
- 11 一种高性能网络游戏服务器架构设计
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="9.1.12" data-path="../游戏开发专题/12经典游戏服务器端架构概述.html">
-
- <a href="../游戏开发专题/12经典游戏服务器端架构概述.html">
-
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- 12 经典游戏服务器端架构概述
-
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-
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-
- <li class="chapter " data-level="9.1.13" data-path="../游戏开发专题/13游戏跨服架构进化之路.html">
-
- <a href="../游戏开发专题/13游戏跨服架构进化之路.html">
-
-
- 13 游戏跨服架构进化之路
-
- </a>
-
-
- </li>
-
- </ul>
-
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-
-
-
- <li class="header">Part IV</li>
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-
- <li class="chapter " data-level="10.1" data-path="../程序员面试题精讲/">
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- <a href="../程序员面试题精讲/">
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- 程序员面试题精讲
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- <ul class="articles">
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- <li class="chapter " data-level="10.1.1" data-path="../程序员面试题精讲/腾讯后台开发实习生技能要求.html">
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- <a href="../程序员面试题精讲/腾讯后台开发实习生技能要求.html">
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- 腾讯后台开发实习生技能要求
-
- </a>
-
-
- </li>
-
- <li class="chapter " data-level="10.1.2" data-path="../程序员面试题精讲/聊聊如何拿大厂的offer.html">
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- <a href="../程序员面试题精讲/聊聊如何拿大厂的offer.html">
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- 聊聊如何拿大厂的 offer
-
- </a>
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-
- </li>
-
- <li class="chapter " data-level="10.1.3" data-path="../程序员面试题精讲/网络通信题目集锦.html">
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- <a href="../程序员面试题精讲/网络通信题目集锦.html">
-
-
- 网络通信题目集锦
-
- </a>
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-
- <li class="chapter " data-level="10.1.4" data-path="../程序员面试题精讲/我面试后端开发经理的经历.html">
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- <a href="../程序员面试题精讲/我面试后端开发经理的经历.html">
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- 我面试后端开发经理的经历
-
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-
- </li>
-
- <li class="chapter " data-level="10.1.5" data-path="../程序员面试题精讲/LinuxCC++后端开发面试问哪些问题.html">
-
- <a href="../程序员面试题精讲/LinuxCC++后端开发面试问哪些问题.html">
-
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- Linux C/C++后端开发面试问哪些问题
-
- </a>
-
-
- </li>
-
- </ul>
-
- </li>
-
- <li class="chapter " data-level="10.2" data-path="../职业规划/">
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- <a href="../职业规划/">
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- 职业规划
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- <ul class="articles">
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- <li class="chapter " data-level="10.2.1" data-path="../职业规划/给工作4年迷茫的程序员们的一点建议.html">
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- <a href="../职业规划/给工作4年迷茫的程序员们的一点建议.html">
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- 给工作 4 年迷茫的程序员们的一点建议
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- <li class="chapter " data-level="10.2.2" data-path="../职业规划/聊聊技术人员的常见的职业问题.html">
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- <a href="../职业规划/聊聊技术人员的常见的职业问题.html">
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- <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#leveldb源码分析9"><b></b>leveldb源码分析9</a></li><ul><li><span class="title-icon "></span><a href="#6-sstable之3"><b></b>6 SSTable之3</a></li><ul><li><span class="title-icon "></span><a href="#65-读取sstable文件"><b></b>6.5 读取sstable文件</a></li></ul></ul></ul></div><h1 id="leveldb源码分析9"><a name="leveldb源码分析9" class="anchor-navigation-ex-anchor" href="#leveldb源码分析9"><i class="fa fa-link" aria-hidden="true"></i></a>leveldb源码分析9</h1>
- <p>本系列《leveldb源码分析》共有22篇文章,这是第九篇</p>
- <h2 id="6-sstable之3"><a name="6-sstable之3" class="anchor-navigation-ex-anchor" href="#6-sstable之3"><i class="fa fa-link" aria-hidden="true"></i></a>6 SSTable之3</h2>
- <h3 id="65-读取sstable文件"><a name="65-读取sstable文件" class="anchor-navigation-ex-anchor" href="#65-读取sstable文件"><i class="fa fa-link" aria-hidden="true"></i></a>6.5 读取sstable文件</h3>
- <h4 id="651-类层次"><a name="651-类层次" class="anchor-navigation-ex-anchor" href="#651-类层次"><i class="fa fa-link" aria-hidden="true"></i></a>6.5.1 类层次</h4>
- <p><strong>Sstable</strong>文件的读取逻辑在<strong>类Table</strong>中,其中涉及到的类还是比较多的,如图6.5-1所示。</p>
- <p><img src="../imgs/leveldb12.webp" alt="img"></p>
- <p>Table类导出的函数只有<strong>3个</strong>,先从这三个导出函数开始分析。其中涉及到的类(包括上图中为画出的)都会一一遇到,然后再一一拆解。</p>
- <p>本节分析<strong>sstable的打开逻辑</strong>,后面再分析key的查找与数据遍历。</p>
- <h4 id="652-tableopen"><a name="652-tableopen" class="anchor-navigation-ex-anchor" href="#652-tableopen"><i class="fa fa-link" aria-hidden="true"></i></a>6.5.2 Table::Open()</h4>
- <p>打开一个sstable文件,函数声明为:</p>
- <pre class="language-"><code>static Status Open(const Options& options, RandomAccessFile* file,
- uint64_tfile_size, Table** table);
- </code></pre><p>这是Table类的一个<strong>静态函数</strong>,如果操作成功,指针<strong>*table</strong>指向新打开的表,否则返回错误。</p>
- <p>要打开的文件和大小分别由<strong>参数file和file_size</strong>指定;option是一些选项;</p>
- <p>下面就分析下函数逻辑:</p>
- <h5 id="1"><a name="1" class="anchor-navigation-ex-anchor" href="#1"><i class="fa fa-link" aria-hidden="true"></i></a><strong><em>1\</em></strong></h5>
- <h5 id="s1-首先从文件的结尾读取footer,并decode到footer对象中,如果文件长度小于footer的长度,则报错。footer的decode很简单,就是根据前面的footer结构,解析并判断magic-number是否正确,解析出meta-index和index-block的偏移和长度。"><a name="s1-首先从文件的结尾读取footer,并decode到footer对象中,如果文件长度小于footer的长度,则报错。footer的decode很简单,就是根据前面的footer结构,解析并判断magic-number是否正确,解析出meta-index和index-block的偏移和长度。" class="anchor-navigation-ex-anchor" href="#s1-首先从文件的结尾读取footer,并decode到footer对象中,如果文件长度小于footer的长度,则报错。footer的decode很简单,就是根据前面的footer结构,解析并判断magic-number是否正确,解析出meta-index和index-block的偏移和长度。"><i class="fa fa-link" aria-hidden="true"></i></a>S1 首先从文件的结尾读取Footer,并Decode到Footer对象中,如果文件长度小于Footer的长度,则报错。Footer的decode很简单,就是根据前面的Footer结构,解析并判断magic number是否正确,解析出meta index和index block的偏移和长度。</h5>
- <pre class="language-"><code>*table = NULL;
- if (size <Footer::kEncodedLength)
- {
- // 文件太短
- returnStatus::InvalidArgument("file is too short to be an sstable");
- }
- charfooter_space[Footer::kEncodedLength]; // Footer大小是固定的
- Slice footer_input;
- Status s = file->Read(size -Footer::kEncodedLength, Footer::kEncodedLength,
- &footer_input, footer_space);
- if (!s.ok()) return s;
- Footer footer;
- s =footer.DecodeFrom(&footer_input);
- if (!s.ok()) return s;
- </code></pre><h5 id="s2-解析出了footer,我们就可以读取index-block和meta-index了,首先读取index-block。"><a name="s2-解析出了footer,我们就可以读取index-block和meta-index了,首先读取index-block。" class="anchor-navigation-ex-anchor" href="#s2-解析出了footer,我们就可以读取index-block和meta-index了,首先读取index-block。"><i class="fa fa-link" aria-hidden="true"></i></a>S2 解析出了Footer,我们就可以读取index block和meta index了,首先读取index block。</h5>
- <pre class="language-"><code>BlockContents contents;
- Block* index_block = NULL;
- if (s.ok())
- {
- s = ReadBlock(file, ReadOptions(),footer.index_handle(), &contents);
- if (s.ok())
- {
- index_block = newBlock(contents);
- }
- }
- </code></pre><p>这是通过调用<strong>ReadBlock</strong>完成的,下面会分析这个函数。</p>
- <h5 id="s3-已经成功读取了footer和index-block,此时table已经可以响应请求了。构建table对象,并读取metaindex数据构建filter-policy。如果option打开了cache,还要为table创建cache。"><a name="s3-已经成功读取了footer和index-block,此时table已经可以响应请求了。构建table对象,并读取metaindex数据构建filter-policy。如果option打开了cache,还要为table创建cache。" class="anchor-navigation-ex-anchor" href="#s3-已经成功读取了footer和index-block,此时table已经可以响应请求了。构建table对象,并读取metaindex数据构建filter-policy。如果option打开了cache,还要为table创建cache。"><i class="fa fa-link" aria-hidden="true"></i></a>S3 已经成功读取了footer和index block,此时table已经可以响应请求了。构建table对象,并读取metaindex数据构建filter policy。如果option打开了cache,还要为table创建cache。</h5>
- <pre class="language-"><code>if (s.ok())
- {
- // 已成功读取footer和index block: 可以响应请求了
- Rep* rep = new Table::Rep;
- rep->options = options;
- rep->file = file;
- rep->metaindex_handle =footer.metaindex_handle();
- rep->index_block =index_block;
- rep->cache_id =(options.block_cache ? options.block_cache->NewId() : 0);
- rep->filter_data = rep->filter= NULL;
- *table = new Table(rep);
- (*table)->ReadMeta(footer);
- // 调用ReadMeta读取metaindex
- }
- else
- {
- if (index_block) deleteindex_block;
- }
- </code></pre><p>到这里,Table的打开操作就已经为完成了。下面来分析上面用到的<strong>ReadBlock()和ReadMeta()函数</strong>。</p>
- <h4 id="653-readblock"><a name="653-readblock" class="anchor-navigation-ex-anchor" href="#653-readblock"><i class="fa fa-link" aria-hidden="true"></i></a>6.5.3 ReadBlock()</h4>
- <p>前面讲过block的格式,以及Block的写入(TableBuilder::WriteRawBlock),现在我们可以轻松的分析<strong>Block的读取操作</strong>了。</p>
- <p>这是一个<strong>全局函数</strong>,声明为:</p>
- <pre class="language-"><code>Status ReadBlock(RandomAccessFile* file, const ReadOptions& options,
- const BlockHandle&handle, BlockContents* result);
- </code></pre><p>下面来分析实现逻辑:</p>
- <h5 id="2"><a name="2" class="anchor-navigation-ex-anchor" href="#2"><i class="fa fa-link" aria-hidden="true"></i></a><strong><em>2</em></strong></h5>
- <h5 id="s1-初始化结果result,blockcontents是一个有3个成员的结构体。"><a name="s1-初始化结果result,blockcontents是一个有3个成员的结构体。" class="anchor-navigation-ex-anchor" href="#s1-初始化结果result,blockcontents是一个有3个成员的结构体。"><i class="fa fa-link" aria-hidden="true"></i></a>S1 初始化结果result,BlockContents是一个有3个成员的结构体。</h5>
- <pre class="language-"><code>result->data = Slice();
- result->cachable = false; // 无cache
- result->heap_allocated =false; // 非heap分配
- </code></pre><h5 id="s2-根据handle指定的偏移和大小,读取block内容,type和crc32值,其中常量kblocktrailersize5-1byte的type和4bytes的crc32。"><a name="s2-根据handle指定的偏移和大小,读取block内容,type和crc32值,其中常量kblocktrailersize5-1byte的type和4bytes的crc32。" class="anchor-navigation-ex-anchor" href="#s2-根据handle指定的偏移和大小,读取block内容,type和crc32值,其中常量kblocktrailersize5-1byte的type和4bytes的crc32。"><i class="fa fa-link" aria-hidden="true"></i></a>S2 根据handle指定的偏移和大小,读取block内容,type和crc32值,其中常量kBlockTrailerSize=5= 1byte的type和4bytes的crc32。</h5>
- <pre class="language-"><code>Status s = file->Read(handle.offset(),handle.size() + kBlockTrailerSize,
- &contents, buf);
- </code></pre><h5 id="s3-如果option要校验crc32,则计算content--type的crc32并校验。"><a name="s3-如果option要校验crc32,则计算content--type的crc32并校验。" class="anchor-navigation-ex-anchor" href="#s3-如果option要校验crc32,则计算content--type的crc32并校验。"><i class="fa fa-link" aria-hidden="true"></i></a>S3 如果option要校验CRC32,则计算content + type的CRC32并校验。</h5>
- <h5 id="s4-最后根据type指定的存储类型,如果是非压缩的,则直接取数据赋给result,否则先解压,把解压结果赋给result,目前支持的是snappy压缩。"><a name="s4-最后根据type指定的存储类型,如果是非压缩的,则直接取数据赋给result,否则先解压,把解压结果赋给result,目前支持的是snappy压缩。" class="anchor-navigation-ex-anchor" href="#s4-最后根据type指定的存储类型,如果是非压缩的,则直接取数据赋给result,否则先解压,把解压结果赋给result,目前支持的是snappy压缩。"><i class="fa fa-link" aria-hidden="true"></i></a>S4 最后根据type指定的存储类型,如果是非压缩的,则直接取数据赋给result,否则先解压,把解压结果赋给result,目前支持的是snappy压缩。</h5>
- <p>另外,文件的<strong>Read接口</strong>返回的Slice结果,其data指针可能没有使用我们传入的buf,如果没有,那么释放Slice的<strong>data指针</strong>就是我们的事情,否则就是文件来管理的。</p>
- <pre class="language-"><code>if (data != buf)
- {
- // 文件自己管理,cacheable等标记设置为false
- delete[] buf;
- result->data =Slice(data, n);
- result->heap_allocated= result->cachable =false;
- }
- else
- {
- // 读取者自己管理,标记设置为true
- result->data =Slice(buf, n);
- result->heap_allocated= result->cachable = true;
- }
- </code></pre><p>对于压缩存储,解压后的字符串存储需要读取者自行分配的,所以标记都是<strong>true</strong>。</p>
- <h4 id="654-tablereadmeta"><a name="654-tablereadmeta" class="anchor-navigation-ex-anchor" href="#654-tablereadmeta"><i class="fa fa-link" aria-hidden="true"></i></a>6.5.4 Table::ReadMeta()</h4>
- <p>解决完了Block的读取,接下来就是<strong>meta的读</strong>取了。函数声明为:</p>
- <pre class="language-"><code>void Table::ReadMeta(const Footer& footer)
- </code></pre><p>函数逻辑并不复杂 。</p>
- <h5 id="3"><a name="3" class="anchor-navigation-ex-anchor" href="#3"><i class="fa fa-link" aria-hidden="true"></i></a><em>3</em></h5>
- <h5 id="s1首先调用readblock读取meta的内容"><a name="s1首先调用readblock读取meta的内容" class="anchor-navigation-ex-anchor" href="#s1首先调用readblock读取meta的内容"><i class="fa fa-link" aria-hidden="true"></i></a>S1首先调用ReadBlock读取meta的内容</h5>
- <pre class="language-"><code>if(rep_->options.filter_policy == NULL) return;
- // 不需要metadata
- ReadOptions opt;
- BlockContents contents;
- if (!ReadBlock(rep_->file,opt, footer.metaindex_handle(), &contents).ok())
- {
- return; // 失败了也没报错,因为没有meta信息也没关系
- }
- </code></pre><h5 id="s2-根据读取的content构建block,找到指定的filter;如果找到了就调用readfilter构建filter对象。block的分析留在后面。"><a name="s2-根据读取的content构建block,找到指定的filter;如果找到了就调用readfilter构建filter对象。block的分析留在后面。" class="anchor-navigation-ex-anchor" href="#s2-根据读取的content构建block,找到指定的filter;如果找到了就调用readfilter构建filter对象。block的分析留在后面。"><i class="fa fa-link" aria-hidden="true"></i></a>S2 根据读取的content构建Block,找到指定的filter;如果找到了就调用ReadFilter构建filter对象。Block的分析留在后面。</h5>
- <pre class="language-"><code>Block* meta = newBlock(contents);
- Iterator* iter =meta->NewIterator(BytewiseComparator());
- std::string key ="filter.";
- key.append(rep_->options.filter_policy->Name());
- iter->Seek(key);
- if (iter->Valid() &&iter->key() == Slice(key)) ReadFilter(iter->value());
- delete iter;
- delete meta;
- </code></pre><h4 id="655-tablereadfilter"><a name="655-tablereadfilter" class="anchor-navigation-ex-anchor" href="#655-tablereadfilter"><i class="fa fa-link" aria-hidden="true"></i></a>6.5.5 Table::ReadFilter()</h4>
- <p>根据指定的偏移和大小,<strong>读取filter</strong>,函数声明:</p>
- <pre class="language-"><code>void ReadFilter(const Slice& filter_handle_value);
- </code></pre><p>简单分析下函数逻辑:</p>
- <h5 id="4"><a name="4" class="anchor-navigation-ex-anchor" href="#4"><i class="fa fa-link" aria-hidden="true"></i></a><strong><em>4</em></strong></h5>
- <h5 id="s1-从传入的filterhandlevalue-decode出blockhandle,这是filter的偏移和大小;"><a name="s1-从传入的filterhandlevalue-decode出blockhandle,这是filter的偏移和大小;" class="anchor-navigation-ex-anchor" href="#s1-从传入的filterhandlevalue-decode出blockhandle,这是filter的偏移和大小;"><i class="fa fa-link" aria-hidden="true"></i></a>S1 从传入的filter_handle_value Decode出BlockHandle,这是filter的偏移和大小;</h5>
- <pre class="language-"><code>BlockHandle filter_handle;
- filter_handle.DecodeFrom(&filter_handle_value);
- </code></pre><h5 id="s2-根据解析出的位置读取filter内容,readblock。如果block的heapallocated为true,表明需要自行释放内存,因此要把指针保存在filterdata中。最后根据读取的data创建filterblockreader对象。"><a name="s2-根据解析出的位置读取filter内容,readblock。如果block的heapallocated为true,表明需要自行释放内存,因此要把指针保存在filterdata中。最后根据读取的data创建filterblockreader对象。" class="anchor-navigation-ex-anchor" href="#s2-根据解析出的位置读取filter内容,readblock。如果block的heapallocated为true,表明需要自行释放内存,因此要把指针保存在filterdata中。最后根据读取的data创建filterblockreader对象。"><i class="fa fa-link" aria-hidden="true"></i></a>S2 根据解析出的位置读取filter内容,ReadBlock。如果block的heap_allocated为true,表明需要自行释放内存,因此要把指针保存在filter_data中。最后根据读取的data创建FilterBlockReader对象。</h5>
- <pre class="language-"><code>ReadOptions opt;
- BlockContents block;
- ReadBlock(rep_->file, opt,filter_handle, &block);
- if (block.heap_allocated)rep_->filter_data = block.data.data();
- // 需要自行释放内存
- rep_->filter = newFilterBlockReader(rep_->options.filter_policy, block.data);
- </code></pre><p>以上就是<strong>sstable文件的读取操作</strong>,不算复杂。</p>
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