How does the query step dynamically change?

Hi all, we use grafana with prometheus as datasource and find out that the query step parameter dynamically changes with time range.

I am curious about how it changes, but cann’t find resource about the question.
Can anyone answer this question? Thank you !

Hi @chenlujjj and welcome to the forum :wave:

I think this youtube video from a Prometheus maintainer might be a useful resource:

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