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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
In order to achieve the same kind of thing for opening more menus at once, I bet you could find the function that's called when opening a menu in Blizzard's addon source code, available here and replace it with your own implementation which does not close the other menus, or at least the menus you want to leave open.
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