Gossip #1294
Description
I'm leaving this feature for last since it is not necessary to reach feature parity between corrosion and xDS, but is one of the nice features that moving to corrosion can give us. But having support for gossiping database changes between relays would mean that a relay going down would no longer be as critical as it is now, as both proxies and agents could reconnect to healthy relays that should have all or at least most of the changes from the relay that became unhealthy.
I haven't looked deeply at the gossip code in corrosion yet, but from what I have seen, it is mostly isolated other than a few hooks into the code to notice database changes and send them to other peers.