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won't there be more noise while predicting just 20s in advance? The longer the duration, the less effects we will see of temporary events like network blips etc. no? sorry I'm new to software engineering and just trying to learn.

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However with a smaller prediction interval you can dampen your autoscaling more. If you predict 20s into the future, react, and 20s later you see how that changed the situation you can afford to spin very few instances up and down each 20s. If you have to predict 5m into the future you might have to take much stronger actions because any effect is delayed by the 5m startup interval.

There’s no one answer for it, you need to learn your traffic / resource usage patterns and tune the scaling to match your situation.

No shortcuts really, although a lot of web applications behave “kinda” similar.

Start conservatively and tweak from there.

Faster feedback is the shortcut. And it always works. Faster boot time is lower latency to serve the queue. Faster feedback is stabilising.

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