The scale of LW is impressive as always.
Is the post_read table where info on what a user has or has not read is stored? I am wondering now if a huge db like that is the cost of implementing features like marking unread comments or posts.
...not that I have a great idea of how to do that since I don't know js at all, but db size is something to keep in mind when the intention is to have federated instances, each with their own infrastructure.