For implementers, this promise-heavy design constrains optimization opportunities. The spec mandates specific promise resolution ordering, making it difficult to batch operations or skip unnecessary async boundaries without risking subtle compliance failures. There are many hidden internal optimizations that implementers do make but these can be complicated and difficult to get right.
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，这一点在服务器推荐中也有详细论述
二、科室迭代：两家医院，如何跟上老人需求？Sun City的核心医疗力量，就是Banner Boswell和Banner Del E. Webb两家医院。它们的科室和服务，从来不是一成不变的，而是跟着老年人口的需求、技术的进步，从基础到专科、从单一到综合，慢慢迭代升级。
"I don't feel he's gone yet - I still feel he'll be back soon," she tells us. "In my mind, he's in his school uniform. He'll return, swinging his bag."