Modeling these qualities can be very difficult — even more difficult than the standard quality of performance, which typically addresses the processing and data storage requirements.
对这些质量进行建模是很困难的,甚至比性能的标准质量更困难,后者通常解决处理和数据存储方面的需求。
There may even be multiple providers that you need to choose between based on geography, time of day, quality of service, and so on.
取决于地理位置、一天当中的不同时间、服务质量等因素,您可能需要在多个提供者之间选择。
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