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Re: Very high latency, low bandwidth replication

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Thanks Stuart.  I'll do some measurements on plaintext dump to git.


On 2 July 2014 09:46, Stuart Bishop <stuart@xxxxxxxxxxxxxxxx> wrote:
On 30 June 2014 15:05, Bob Jolliffe <bobjolliffe@xxxxxxxxx> wrote:

> What are people's thoughts about a more optimal solution?  I would like to
> use a more incremental approach to replication.  This does not have to be a
> "live" replication .. asynchronously triggering once every 24 hours is
> sufficient.  Also there are only a subset of tables which are required (the
> rest consist of data which is generated).

WAL shipping is probably best here. Configure an archive_command on
the master to  compress and push logs to cloud storage, and configure
a hot standby on site to pull and decompress the logs. The wal-e tool
may make things simpler pushing to cloud storage, or just follow the
PostgreSQL documentation to archive the WAL files to a filesystem.

If that isn't good enough, you can look at more esoteric approaches
(eg. nightly plaintext dumps to a git repository, pushing changes to
disk on site).


--
Stuart Bishop <stuart@xxxxxxxxxxxxxxxx>
http://www.stuartbishop.net/


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