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Single-valued charts #591
This is coming along; it's a slightly more complex feature than it first appears to be ;-)
Because queries can be expensive, and the dashboard updates frequently, single-valued charts like the one above need to use time-slice caching in order to consume a reasonable amount of resources. Behind the scenes, a new query hint
In 4.1, this will only be used by the dashboard, but a future version might enable this transparently for some queries since the performance difference is substantial.
Once this is done, we'll also have a strong foundation to efficiently build rowset-value charts, pie charts and so-on.