@Gargron my Mastodon server had ~2 months of downtime (due to me not having time to care for it, stuck in Postgres migration), and I have a gap in my timeline. I could not find documentation about this - how does federation work exactly? Are toots federated only when instances are online? If so, is there a way to "backfill" the data? I can definitely see everything when I go to individual profiles.