Notices where this attachment appears
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@mint @iamtakingiteasy @Terry @colonelj @sjw
> Wonder if it's related to recently introduced priority queue.
Sounds likely. I had a look at the diff (https://git.pleroma.social/pleroma/pleroma/-/merge_requests/4004/diffs) and it looks like it just uses the "cc" attribute and doesn't distinguish by type, which matches what I'm seeing: a big flood of "Like" activities. publisher.ex:141 and :217 and there's some discussion around the problem. When I did the dump, it was Likes getting delivered to specific people and to followers addresses. (e.g., Terry smashed that like on a post on some other server, but https://bae.st/users/Terry/followers was in the CC field.)
I was just talking to @lanodan (who did the merge, according to https://git.pleroma.social/pleroma/pleroma/-/merge_requests/4004 ) about some unrelated stuff (periodic "PL complaints" thread :terrysmoking:), but I'm not sure there's enough information even to file an issue. Code seems a little shaky (I have only had an initial look at it, I could be wrong), it does seem like it matches the behavior I'm seeing here. The dedup is trivial string match on line 258, maybe should dedup by host. I'm not sure that I have read the bit that handles shared/private inboxes correctly.
> None of that would've been an issue if sjw didn't shit his instance up with hundreds of bots reposting images from Danbooru.
I think they're responsible for a small amount of the actual traffic, probably just a lot of people following each other on both servers.