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Google SRE工作手册
book

Google SRE工作手册

by Betsy Beyer, Niall Richard Murphy, David K. Rensin, Kent Kawahara, Stephen Thorne
September 2020
Intermediate to advanced
526 pages
8h 23m
Chinese
China Electric Power Press Ltd.
Content preview from Google SRE工作手册
译者序
I
当你走进公司的澡堂,打算沐浴更衣重启一下自己,却发现莲蓬头里流出来的水忽
冷忽热,十分扫兴。你回忆起过去
3
年里,每年至少有
4
个星期澡堂彻底停摆,
10
个淋浴间里有
1
2
个被拦起来的情况也经常发生,正常开放的淋浴间还会时不时地
热水供应不济。
身边的同事们用主观的语气抱怨澡堂不太好用时,你考虑的是:怎样才能客观地度
量“好用”呢?假设热水的设计温度为
75
°
C
,那规定热水始终达到
75
°
C
才叫“好
用”,可以吗?实际上,热水的温度可能在
70
80
°
C
之间,平均约为
75
°
C
。这样
一来,要求每一刻都达到
75
°
C
是不可能完成也不必完成的任务,而仅要求温度达到
70
°
C
又似乎降低了标准。
经过一番思考,你把一个淋浴间“好用”定义为:
打开热水
15
秒后,
95%
的时间在
60
°
C
以上,
90%
的时间在
70
°
C
以上,
50%
时间在
75
°
C
以上;
在连续
20
秒中前
10
秒的平均温度与后
10
秒的平均温度之差,
95%
的时间小于
10
°
C
50%
的时间小于
3
°
C
95%
的时间出水量在
6
/
分钟以上;
……
而整个澡堂“好用”定义为:
95%
的日子里至少有
70%
的淋浴间“好用”,
50%
日子里至少有
90%
的淋浴间“好用”。
你还安装了一些探测器,监测每个淋浴间热水出水口的温度,当临近“不好用”的时候,
主动向维修人员告警;要是澡堂连续一周“不好用”了,就写一份对事不对人的事
后总结,挖掘本质原因,提出改进方案。最后,你还说服了后勤部门,虽然我们的
澡堂规模很小,但依然应当参考游泳馆、温泉、水疗酒店等大规模机构的工作原理。
叮铃铃,闹钟响了。床头柜上是昨晚读到一半的
SRE
书。看了这本书后,你会经常
憧憬着用
SRE
的原理去规划生活中遇到的事情。
祝大家阅读愉快。
钟诚
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Publisher Resources

ISBN: 9787519845858