March 2023
Beginner to intermediate
266 pages
4h 30m
Chinese
Content preview from FinOps云成本优化
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131
第 13 章
使用预留实例和承诺使用
折扣减少支出
预留实例（
RI
）是
FinOps
的精髓。他们可以在技术团队和财务团队之间架起桥梁，这需
要协调一致，虽然这可能很难实现。然而，当技术团队与财务团队实现步调一致时，预留
实例通过改进云单元经济带来显著的竞争优势，以低廉的价格为你提供相同的计算能力。
本章是最有可能过时的章节之一
—
甚至可能在本书上市之前就已经过时了，
因为云服务提供商的产品总会不断地更新。我们建议查看本章中的详细信息，
并通过访问
FinOps
官方网站对照你的云服务提供商目前提供的服务。尽管如此，
你也不要担心
:
虽然多年来服务发生了很多变化，但围绕预留的核心最佳实践
仍然保持不变。
预留概览
预留实例和承诺使用折扣（
CUD
），统称为预订或承诺，是云服务提供商提供的最受欢迎
的成本优化手段。一部分原因是他们通过广泛的营销来说服你，通过拥抱云计算，你可以
节省大量的费用，另一部分原因是
FinOps
平台使你能够从规划、管理等这些优化中获益。
每个云服务提供商提供的服务略有不同，在如何使用和提供折扣方面有自己的特定规则。
你还必须根据组织的需求考虑使用的模型，以及整体流程在组织中的工作方式。
预留实例的作用是显著的。你承诺在一定时间内使用特定类型的资源，并将获得相当大
的折扣。这个方案似乎很简单，但正如你将看到的，有许多细微差别需要学习。
几年前，在
AWS
、
Apptio Cloudability
和
Adobe
关于预留实例作用的一次网络研讨会上，
132
｜
第
13
章
使用预留实例和承诺使用折扣减少支出
Adobe ...
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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.
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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.