I'm looking to utilize an efficient method to store the IDs of viewed and unviewed posts. I figured it could easily be done by storing all of the IDs in a database containing the user records, but then I'm not sure if that's the most efficient and space-saving way to do it. Is there a better way to do it?
(Does anyone know what kind of system bulletin board software like phpBB and Invision uses for their "read" and "unread" tracking?)
Thanks in advance,