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Then you haven't read enough jepsen reports. Distributed system guarantees generally can't be trusted


Postgres is not a distributed system in this configuration usually though is it?


The result is for “Amazon RDS for PostgreSQL multi-AZ clusters” which are certainly a distributed system.

I’m not well versed in RDS but I believe that clustered is the only way to use it.


An RDS cluster can have a single instance (but it can't be multi-AZ with a single instance.)


No, you can have single instances


This writeup tested multi-AZ RDS for Postgres — which is always distributed behind the scenes (otherwise, it couldn't exist in multiple AZs).


A multi-AZ cluster is necessarily a distributed system.




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