I have posts and comments on Hexbear from 4 hrs ago that don’t show up
I have a comment on Lemmygrad from 4 hrs ago that doesn’t show up
A recent series of posts from ml to other instances have almost no interaction locally. When viewed remotely, they have higher vote counts (no more comments to compare).
I haven’t extensively looked at the new feed to see if posts are outright missing, but I see the same general pattern spot checking posts that do appear: vote totals much lower than elsewhere, missing comments
I don’t see issues reported on https://phiresky.github.io/lemmy-federation-state/site
Normally Lemmy returns an error if activities cant be handled (eg instance is down). Then the sending instance keeps retrying until it is successful. But in this case its a bit different, and the sending looked successful.
Anyway I made a change to the federation library to add
Hostheader automatically if missing, then this problem wont happen anymore in the future.Yeah I got that. But couldn't you (theoretically) add a "resend activities from " option to the API? So you can ask other servers for things you missed. I mean what happened here is one problem where that may be useful, but another would be something like having to restore from day old backups, being a new instance with no history, a network outage, or missing things for whatever other reason.
Like I said I don't know the data structures involved, but in my layperson head it sounds possible, although you may have to throttle it to prevent abuse I guess.