On Sat, Apr 20, 2019 at 12:21:36AM -0400, Robert Haas wrote:
> As to that, what I'm proposing here is no different than what we are
> already doing with physical and logical replication, except that it's
> probably a bit cheaper. Physical replication reads all the WAL and
> sends it all out over the network. Logical replication reads all the
> WAL, does a bunch of computation, and then sends the results, possibly
> filtered, out over the network. This would read the WAL and then
> write a relatively small file to your local disk.
>
> I think the impact will be about the same as having one additional
> standby, give or take.
Good point.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
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