Am 14.06.2018 um 14:04 schrieb Uri Braun:
Hi,
I'm looking to run Postgres -- flexible on exact version -- on some
devices installed in cars and replicated to a central server over cell
phone modems. I expect dropped connections due to: lack of coverage
(remote areas), dead spots, tunnels, cars parked in garages, device
power disconnected, etc. I expect all data to be generated on the car
devices and want it to eventually be copied over to the central
server. I would also like to be able to delete old data -- say months
old -- on the car equipment and NOT have those deletes propagate to
the central server.
To be clear, the car device will surely add data -- append rows -- and
may very occasionally add a new table. I would expect the only case
where a delete may occur -- other than culling old data -- is during
recovery of a partial write or transaction rollbacks. The time
requirements are loose, but I would like replication consistency
within hours (once connected).
I'm wondering what replication scheme is appropriate for this use case
and how to configure it appropriately.
i think pglogical can fit your requirements, please take a look:
https://www.2ndquadrant.com/en/resources/pglogical/
Regards, Andreas
--
2ndQuadrant - The PostgreSQL Support Company.
www.2ndQuadrant.com
