Conceptual

Power BI Direct Lake Fallback to DirectQuery Prevention and Resolution in Fabric Capacity Workspaces

In the domain of semantic modeling within Fabric capacity workspaces, a resource guardrail mechanism enforces memory-resident query execution for tables adhering to specific thresholds (e.g., 300 million rows). When data volume or structural parameters exceed these predefined bounds, an automatic failover occurs where in-memory direct lake processing is abandoned in favor of remote directquery patterns. This principle establishes a deterministic boundary condition between optimized local computation and legacy distributed query execution based on strict dimensional limits.