September 2020
Intermediate to advanced
526 pages
8h 23m
Chinese
book
Google SRE工作手册
by Betsy Beyer, Niall Richard Murphy, David K. Rensin, Kent Kawahara, Stephen Thorne
Content preview from Google SRE工作手册
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配置设计及最佳实践
｜
339
如果你发现不只是一小部分用户需要复杂的配置，那么你可能在识别常见用例的时
候误判了。如果是这样，请重新审视系统初始的产品假设，并对其他用户进行调研。
配置机制
到目前为止，我们已经讨论了配置的原则。本节将重点转移到用户与配置系统交互
的机制。
配置和生成的数据分离
使用什么语言存储配置信息是不可回避的问题。你可以选择使用
INI
、
YAML
或
XML
文件中的那种纯数据。或者为了能更灵活，配置可以存储在更高级语言中。
从根本上说，所有询问用户的问题都归类为静态信息。这可能是“应该使用多少个
线程？”这样的，明显静态答案的问题。但即使是“每个请求应该使用什么函数？”
这样的问题，也只是静态的引用函数。
关于“配置信息是代码还是数据？”这个古老问题，我们的经验表明，它是代码和
数据二者兼备，但最好还是将两者分开。系统基础设施应该运行在纯静态数据上，
这些数据可以是
Protocol Buffers
（源于
Google
）（
http://bit.ly/1HhFC5L
）、
YAML
（
https://yaml.org/
）或
JSON
（
https://www.json.dgl
）等格式。这个选择并不意味着
用户实际上要与纯数据交互。用户还是可以与更高级的用于生成以上数据的界面进
行交互。此外，逐步堆叠的系统和自动化
API
也能够使用这种数据格式。
这个高级的界面几乎可以是任何形式。它可以是高级编程语言，如基于
Python
的领
域特定语言（
DSL
），
Lua
或专用语言，如
Jsonnet
（我们将在第
15
章中更详细地讨论） ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.