q: "chocolate cake history",
当配置变更（Config 对象引用变化）时，WeakMap 的键失效，缓存自动失效。不需要显式清除——这是 WeakMap 的自动 GC 特性，优雅地解决了缓存失效问题。，详情可参考wps
。谷歌对此有专业解读
Greater than: Every domino half in this space must add up to more than the number.，这一点在whatsapp中也有详细论述
Finally, for very long term commitments, AWS, GCP and Azure provide 3-year reserved discounts:
让「养龙虾」变得像装微信一样简单