Forum Discussion
Persistent Cache in Power BI Service
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.
Ehren, can you offer any insight here? When Power Query runs in the Power BI Service, is a persistent cache used (e.g. same as what happens in Power BI Desktop and Excel)?
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.