目 录1概述................................................................................................................161.1建设背景.................................................................................................161.2系统现状分析.........................................................................................161.3指导思想.................................................................................................171.4参考文献.................................................................................................192系统目标及原则............................................................................................202.1建设目标.................................................................................................202.1.1业务目标..........................................................................................202.1.2工程目标..........................................................................................212.2建设原则.................................................................................................212.3难点分析.................................................................................................223总体解决方案................................................................................................244系统总体设计................................................................................................414.1设计原则.................................................................................................414.2系统架构.................................................................................................414.5高可用性设计.........................................................................................524.5.1高可靠性..........................................................................................524.5.2高性能..............................................................................................534.5.3在线升级和高扩展性.......
