yu zhou wrote:

 

Is JBPM siutable for my project like financial  reimbursement processes?

yes, it's a matter of your process definitions

yu zhou wrote:

 

If a lots of processes instances run in app at the same time,will the processes instances run time information leave the memory of app,or they just sotre the DB??

process instances are in memory only when they are actually executing but when they are in a wait state (like human task) then they are stored in db and do not take any memory at that time.

HTH