On Wednesday, August 14, I'll be giving a livestreamed talk with @fauna, discussing various approaches for transactional isolation in globally distributed systems, including Spanner, @CockroachDB, FaunaDB, @YugaByteDB, @VoltDB, Percolator, and TiDB.http://www2.fauna.com/wcdistributedarchitectures …
Does that mean that the effective txn commit latency is actually 3, not 2, network hops? 2 in the actual commit path, and an additional one implied by waiting for a log segment sealing message from remote leaders?
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No, because the other log segments are committing their batches for the epoch in parallel (modulo clock jitter). I drew some diagrams for the 3 replica case:pic.twitter.com/j4KZeIujil
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I forgot to mention the diagrams exclude Accepted message broadcast to other followers.
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