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能否增加动态step调整，让segment分配的频率更加可控 #16

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NotFound9 opened this issue Apr 15, 2020 · 2 comments
Open

能否增加动态step调整，让segment分配的频率更加可控 #16

NotFound9 opened this issue Apr 15, 2020 · 2 comments

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@NotFound9
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能否增加动态step调整，因为如果一开始对业务调用量无法评估的话，对step设置的过小会导致每次分配的segement使用过快，更新时冲突的概率变大，设置得过大又容易造成segement浪费。如果在增加maxId时记录增加时间lastTimeStamp，在下次增加maxId时，判断当前时间减去lastTimeStamp之间的时间差，如果小于我们设定的时间间隔(例如15分钟)，那么我们就增大内存中step变量的值，如果大于就适当减少step变量的值，这样可以让segment分配的频率在我们可控的氛围内，如果可以增加的话，我可以实现这部分代码提PR
@johnsonin
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美团也想这么搞

@tayueyue
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我也碰到这样的问题

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@johnsonin @NotFound9 @tayueyue