March 2023
Beginner to intermediate
266 pages
4h 30m
Chinese
Content preview from FinOps云成本优化
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126
｜
第
12
章
减少支出：费率优化
现货
/
可被抢占的
/
低优先级资源
一些云服务提供商提供了一种使用其云平台的空闲容量资源的方法。在现货
/
可被抢占
的
/
低优先级定价模式下，你通常会为资源设定一个你愿意支付的价格
(
或出价
)
，这个
价格有时会高于按需费率，但通常会更低。你将为现货资源支付市场价格，直到超过你
的出价，并且，你将在短时间内停止使用该资源，直到它被云服务提供商删除。
这种定价比按需收费节省了很多，通常是运行资源的最便宜的方法。然而，随时丢失资
源的风险意味着在资源上运行的服务需要能够处理资源可用性下降的问题。通常使用现
货资源是通过批处理程序实现的，如果失去了资源，可以随时恢复或重新启动该程序。
预留
如前所述，我们将在第
13
章详细讨论预留资源。但一般来说，预留是你向云服务提供
商做出的长期承诺，保证在一段时间内保持一定数量的资源使用。作为回报，云服务提
供商将为约定的使用量提供相对于按需收费价格的正常折扣。
存储资源定价
当我们谈论云存储的费率优化时，我们并不是指减少存储量，而是指减少使用量。这里
我们指的是为数据选择哪一级别的存储。云服务提供商提供一系列存储服务，对应不同
级别的可用性、持久性、性能和容量。一般来说，数据的性能、持久性和可用性越好，
支付的费用就越多。关键是要在价格和数据存储质量之间找到一个平衡点。
考虑到生产数据会为客户直接提供服务。它很可能需要存储在性能最好、高可用程度最
高的存储产品上。但这种数据的备份不太需要存储在同样高成本的存储上。随着备份的
数据越来越久，通常不太可能需要它们 ...
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