I could write a lot but it is quite good explained here:
https://forum.mendix.com/link/space/microflows/questions/99878
Honestly for performance you should consider tips from over here:
https://docs.mendix.com/refguide/performance-best-practices/
Additional:
https://docs.mendix.com/refguide/dev-best-practices/
https://docs.mendix.com/refguide/community-best-practices-for-app-performance/