I was curious how the synchronization behaved between instances so I posted a comment while lemmy.world was on 0.17 and temporarily disconnected from lemmy.ca. I noticed that even though lemmy.world and lemmy.ca are on 0.18.1 and 0.18 now, the comment still has not gotten to lemmy.ca. If a comment is posted while there is a network partition of some kind, do the comments eventually get through or are comments only synchronized between instances when they are posted?
Yes, I get the impression that content changes are pushed between instances, rather than trying to synchronize entire communities.