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I assume the majority of people are autoscaling merely for diurnal and weekly traffic swings, where the signal window could be as high as 30 min or 1 hour. Do folks really see sub-minutely autoscaling?

Are customers that are so cost sensitive served well by public clouds and attendant infrastructure?

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Netflix scales on short intervals for reliability. Scale up quickly to handle a spike in traffic, scale down slowly to save money.

They also do proactive scaling to address the issues you brought up, since they can predict with fairly high accuracy the normal viewing patterns.

For example scaling up on Saturday morning ahead of all the kids waking up.

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