March 2023
Beginner to intermediate
266 pages
4h 30m
Chinese
Content preview from FinOps云成本优化
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支出计算公式
｜
45
列削减成本的措施 ：“我们取消了‘僵尸实例’，调整了一些不合适的规格，购买了一些
预留实例。”之后的一个月，云账单显示成本下降了
10%
。大获全胜！
但仔细想想，
2
月份的天数只有
1
月的
90%
，这似乎显而易见，但拿
2
月的数据与其他
月份相比，成本下降的幅度让团队产生了“降低成本的策略是有效的”的错觉。之后，
不可避免的是，到了
3
月
31
日，大家开始恐慌，因为成本在以每月
10%
的速度上涨。
值得再次强调的是，云账单与时间密切相关。不同于财务团队习惯的数据中心按月计费
模式，云计费的粒度要细得多。比如，你想比较两项同类资源，都必须在相同时间长度
内做比较，无论是
10
天还是
10
小时。
拒绝瀑布式分期付款计划，即不再将一年支出简单地除以
12
个月，这对你来说会是一
个巨大的飞跃。然而旧习难改。我们遇到过财务部门批评分摊到每小时的精确计算的数
据有
10%
的偏差，最终发现是因为财务部门把分期付款额简单地除以
12
，而正确的计
算方式是用每秒（或每小时）的分期付款成本乘以所使用的小时数。这个例子也说明了
FinOps
的发展需要全新的理念。
一美元不再是一美元
虽然我们研究的是同类资源的比较，但请务必记得 ：特定行中特定资源类型的费率与同
类型但不同时间段内资源的费率可能不同。在内部部署中，你可以在选定时间内为资源
设置相同费率 ；而云费率则随云供应商应用的资源预留或批量折扣的情况而大不相同。
此外，预留实例或承诺使用折扣的早期预付款分期付款可能会进一步改变以上结果，这
取决于你是否将这些因素纳入用户可见范围。我们的建议是纳入，因为其显示的金额代 ...
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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.