On Tue, Apr 25, 2017 at 11:01 AM, Bruce Momjian <br...@momjian.us> wrote:
>> Or the ability of logical decoding to follow timeline switches.
> I didn't think logical decoding was really more than a proof-of-concept
> until now.

/me searches for jaw on floor.

It sounds like you don't understand how logical decoding works.  There
are plugins -- fairly widely used, I think -- like
https://github.com/confluentinc/bottledwater-pg and
https://github.com/eulerto/wal2json which use the in-core
infrastructure to do very nifty things, much like there are foreign
data wrappers other than postgres_fdw.  Even test_decoding is (perhaps
regrettably) being used to build production solutions.  The point is
that most of the logic is in core; test_decoding or bottlewater or
wal2json are just small plugins that tap into that infrastructure.

I would not in any way refer to logical decoding as being only a proof
of concept, even before logical replication.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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