Advanced Mirror Configuration
When a user opens a Tableau view, Xpress Insight first ensures the data in the mirror is up to date.
Updating the mirror typically takes a few seconds depending on the size of the tables. Xpress Insight can populate the mirror at two stages: post-execution and on-demand when a view is opened.
The default behavior offers a balanced approach to mirror population that should be suitable for most apps. Small mirror tables (that is, <50k rows) are automatically populated post-execution. The remaining tables will be populated on-demand.
The following describes how this can be controlled at a finer level.