I use uuids in links. Using sequential ids gives people access to information they shouldn't see. Unfortunately, the link has to be publicly accessible. Then UU

I use uuids in links. Using sequential ids gives people access to information they shouldn't see. Unfortunately, the link has to be publicly accessible. Then UUIDs become a very practical key for your records. That said, the number of times those records are accessed is low, so there are no performance considerations.