Your errors have messages, most of the time your "did not connect" error gets caught inside your "DiscountService" And returns a "could not connect to discount

Your errors have messages, most of the time your "did not connect" error gets caught inside your "DiscountService" And returns a "could not connect to discount service error" ... Its funny that were having this conversation because "discount service" is a thing in my life. Its sporadic failures means I just re-try immediately and get a success... Errors are part of flow control.