State machine replication, and why you should care
There's a whole database, Datomic, that works roughly this way -- not the UDP multicast but the idea of having a slightly more nuanced consistency/availability/partition tolerance tradeoff by having a thin transaction organizer which is not partition tolerant and officially states which one came first and second, upstream of the replicas that grant normal availability.<p>I would have liked the discussion about Raft/Paxos that they said they'd leave out of this episode though :(