关键词：云资源；资源优化；数值不稳定算法
摘 要：Many enterprises are unprepared for cloud outages as a result of complete resourceexhaustion. In this article, the author starts with a cloud outage scenario, provides examples offailures resulting from resource exhaustion, discusses user expectations about risk mitigationefforts, and looks at the role of service level agreements (SLA) in mitigating risks.