How to get decision basis data in one call

Hi BRFplus gurus,

Need an input on following scenario :

Creating a customize class (treated as API between CRM and BRFplus) to call all relevant data for an entity type in one call i.e.

We want an Z class to retrieve all relevant data for a entity type in one go. Secondly, How do I make sure that the call to the class is only once and the applications in the BRFplus are using only the buffered data from the call and not calling the Z class again and again.

Any relevant guidance would be much helpful.

Kind Regards,

Kunal.