Charts not refreshing

Guys’ I just started exporing Frappe Insights.
When I make changes in the query the charts are not refreshing.
What mistake I am doing.

Hope Refresh button in Dashboard refreshes all charts and fire underlying queries.

Regards,

I observed that charts are not reflecting realtime, its taking a minute or two to get latest data

i observed that if the data is changed, the queries still fetch from cache if not changed, so the new data is not shown. I changed the query a little bit.
Not sure what was wrong. It had not happened with me before.