It is very, very common to have asynchronous replication. I would say the need for synchronous is far more limited (although greater desired).

I would imagine that multi-master synchronous replication would be fairly trivial to implement with 2PC and wal-shipping available, no?

Trivial? I would say... no. There is a reason it hasn't been done yet, and a reason why CMD (for example) has zero plans to even try.


Joshua D. Drake


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