September 2021
Beginner to intermediate
392 pages
12h 13m
Chinese
book
Google系统架构解密： 构建安全可靠的系统
by Heather Adkins, Betsy Beyer, Paul Blankinship, Piotr Lewandowski, Ana Oprea, Adam Stubblefield
Content preview from Google系统架构解密： 构建安全可靠的系统
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257
第 16章
防灾规划
撰写人：
Michael Robinson
、
Sean Noonan
、
Alex Bramley
和
Kavita Guliani
由于系统不可避免地会遇到可靠性故障或安全性事件，因此需要做好准备。我们建议
完成开发阶段后，在研发周期结束时进行防灾规划活动。
本章首先阐释灾害风险分析，它是制订灵活的应对计划的必要步骤。然后，介绍组建
事件响应小组的步骤，并就如何在灾难发生前确定可做的准备活动给出一些提示。最
后，深入探讨如何在灾难发生前对组织进行测试，并通过几个例子展示
Google
是如何
为某些特定的灾难场景做准备的。
复杂系统的故障原因可能是简单的，也可能是复杂的。可能是意外服务中断，也可能是恶
意攻击者为获得未授权访问而发起的攻击。尽管这些故障可通过可靠性工程和安全最佳实
践来预测及预防，但长远来看，它们几乎是不可避免的。
防灾规划不是仅仅希望系统能够在灾难或攻击中幸存下来，或希望员工能做出合理的响
应。防灾规划可确保从灾难中恢复的能力不断提升。好消息是，制订全面战略的第一步是
实用且可行的。
16.1
“
灾难
”
的定义
大难临头时你才意识到事情不妙，这其实很罕见。在建筑物被大火完全吞噬之前，你更可
能先看到烟雾或闻到烟味。一些看似不起眼的迹象并不一定马上让人联想到灾难。直到火
势逐渐蔓延，你身处险境，才意识到事态严重。类似地，有时像第
2
章中提到的财务报表
错误这样的小事件，也可能会引发全面的事件响应。
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.