[Pgpool-general] Two geographic instances

Marco listaddr at gmail.com
Mon Oct 25 09:43:12 UTC 2010


2010/10/22  <Daniel.Crespo at l-3com.com>:
> I suggest you to read this:
>
> http://www.postgresql.org/docs/9.0/interactive/different-replication-solutions.html
>
>
>
> I would look at what Bucardo offers, which is asynchronous multi-master
> replication. In synchronous multi-master, and especially in your case with
> pgpool-II, if one database goes down, you might end with inconsistent data
> in each database (some data same, but newly added data on each end would
> cause a conflic in case you wanted to merge somehow the changes).

Thanks, I will certainly look at Bucardo. However, I don't understand
why I should have inconsistent data if a site goes down. If a site
goes down, only the other site will receive updates, so in the end
when the down site is back up again (before letting users use it) I
will only have to do a unidirectional synchronization from the working
site to the recovered site.
Am I missing something?

Thank you


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