[eluser]AgentPhoenix[/eluser]
[quote author="jedd" date="1257458301"]Yeah - who'd think to search forums for messages about writing forums, eh?
Anyhoo, the method I describe in there is pretty much done - a few things I need to sort out (locking threads on reads if they're a certain age) and so on - but the design seems to work a treat. Entirely unsure how well it would scale across thousands of threads, thousands of users - but I speculate reasonably well (because of the fact that locking a thread deletes all latest-read info about it for all users) and besides, disk is cheap.[/quote]
Weird, I had the box checked to notify me of responses to the thread and it didn't.
Anyway, for the part of this that checks for unread topics within a given forum, it shouldn't be too much of an issue because you'll only ever be checking a certain number of threads anyway, right? For example, if you have 50 threads to a page, then you'll only have to check those 50 threads for unread state, not all 800,000 that exist in that forum (unless I'm not thinking of something). Of course, when checking the general read/unread state of a forum, I can see where it might get hairy.
