I host a small Lemmy instance (just me at the moment), and on the Admin page i've noticed these rate limit settings. They don't seem to be documented and their meaning is a bit unclear to me. For example, what is the difference between 'Message Rate Limit' and 'Per Second'? And are these values per user or for the entire instance?

If anyone could explain these rate limit values (or point me to the relevant documentation) I would greatly appreciate it!