Conditions under which callbacks.receive may be called multiple times

[jackkleeman]

I am building an application that is going to sit right next to the bridge, and potentially share its database. I understand my receive endpoint needs to be able to handle being called multiple times even if it has already successfully processed a receive. What are the conditions for this? Some kind of database failure? In which case, is it even worth me storing operation ids in the same database, given that it would be susceptible to the same failure mode?