Best practice for segment_duration & partition_number

[zouxiang1993]

I think these settings are critical for performance, but I don't know how to choose a proper value.

[ShiKaiWi]

Sorry for late response, we didn't pay enough attention to the discussions here. As for segment duration tuning, I would say let the ceresdb decide it for you (the segment duration is decided by sampling first written data). And partition number can be decided easily for now, I guess a proper partition number should be 3-4 times physical nodes for expansion in the future.