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热点缓存重建 #57

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tiancheng91 opened this issue Mar 18, 2021 · 0 comments

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tiancheng91 commented Mar 18, 2021

概率性预先重计算


currentTime - ( timeToCompute * beta * log(rand()) ) > expiry


currentTime 是当前时间戳。

timeToCompute 是重新计算缓存值所花费的时间。

beta 是一个大于 0 的非负数，默认值为 1，是可配置的。

rand()是一个返回 0 到 1 之间随机数的函数。

expiry 是缓存值未来被设置为过期的时间戳。

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