March 2023
Beginner to intermediate
266 pages
4h 30m
Chinese
Content preview from FinOps云成本优化
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
集中式预留模型
｜
157
当你承诺预先支付（部分）时，会在很长一段时间内（一年或三年）享有这样的折扣，
并且你需要在此期间内将预付款分摊下去。分摊预付款又被称为摊销成本（
Amortization
）。
对于像
AWS
这样的一些云服务提供商，你可以选择预先支付全部、部分，或什么都不付。
你提前支付的金额越多，获得的预留折扣就越高。
我们在决定是否预先付款时，需要考虑两个主要因素 ：会计，粒度。
会计
会计因素是指对会计流程的影响。我们在第
13
章中提到过，
RI
将随机应用于云业
务中。如果你需要将部分预留金额分配给一个团队，将另一部分预留金额分配给另
一个团队，则需要准确跟踪这些预留应用，看它们在哪些业务上，按业务分类摊销
成本。
粒度
粒度因素是指，不能将预留实例产生的费用简单地按月等分到每个月里。因为并非
每个月的时间长短都是一致的，例如 ：
2
月比
3
月短
10%
（
2
月比
3
月少
3
天），这
会导致
2
月分摊的成本较多，而
3
月分摊的成本较少。因此，摊销成本需要更精细
的方法。
我们将在本章后面介绍谁支付预留费用。
集中式预留模型
较为有经验的
FinOps
从业者都会对公司的采购进行集中式的管理。预留很复杂，你需要
有一位专家来掌控（前面提到的
RI
沙皇）。让一个团队负责组织内所有预留的分析、批准、
采购和管理，将确保效率和准确性，从而实现最高水平的节省。如果你的团队单独分析
他们自己对云的使用情况，则他们经常会出错，或者他们可能会成倍地购买预留量。
由单个团队管理的预留仅考虑该团队的使用情况。单个团队在购买预留时，用量的高峰
和低谷，不会是绝对需要考虑的条件 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.