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Persistent Cache in Power BI Service
Hello, Desktop implementations of Power Query (e.g. Power BI Desktop, Excel) use a persistent cache that, in some cases, caches the data sent back in reply to queries/requests sent to external da...
Yes, a persistent cache is used when refreshing queries in the PBI Service. However, the Service caching is slightly different than what happens when refreshing in Desktop. The primary difference is that in Desktop refresh, a single cache is shared by all the queries being refreshed. But in Service refresh, each query gets its own persistent cache. This can lead to Service refresh being slower than Desktop refresh, if the queries benefit from using the results cached by other queries in the dataset.
Datasets are loaded into the capacity memory. That's the equivalent of your "cache", but it's also fundamentally how the Power BI service works.
Either your dataset is in memory, or it isn't (when it has been evicted due to inactivity).