SOA Business event

User_60N23

Dears,

I have a question, i am planning to use SOA business event for share updated on hand stocks

is it better to use BPEL with determine job executed to get updated on hand stock and insert on other system

or to use business event to publish updated stock and subscriber will get updated on hand stock and update the database

i need to know which one is more consumable from RAM and processing database execute job or business event with EDN and why?

Thanks