Re: Looking for way to replicate master db to multiple mobile databases

From: Alexey Klyukin <alexk(at)commandprompt(dot)com>
To: Bryan Montgomery <monty(at)english(dot)net>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Looking for way to replicate master db to multiple mobile databases
Date: 2009-09-24 12:55:11
Message-ID: 12c44d160909240555k3c31d9c7n8fda2a2f5c15b1a5@mail.gmail.com
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Hi,

On Wed, Sep 23, 2009 at 8:11 PM, Bryan Montgomery <monty(at)english(dot)net> wrote:
> Hi,
> I'm looking for a way to replicate am master database to multiple (100+)
> databases that are taken in to the field. Currently for each laptop we dump
> and load the tables. However,there is only a small percentage of data that
> changes on a frequent basis.
>
> I've been looking around and come across pyerplica, londiste and bucardo -
> the documentation on most of these is fairly sparse. It seems that Bucardo
> may be the best bet - at least initially.

You might have a look at Mammoth Replicator (I'm a developer of it).
Although we haven't checked whether it works with hundreds of slaves,
in theory it should. The feature that can be useful to your setup is
'batched' updates, designed for slaves that are not constantly
connected to the master server. These slaves connect to the
replication server for some configurable period of time, get the new
data, and disconnect until the next attempt.

>
> However, I thought I'd see if anyone is doing something similar and what
> thoughts there might be out there as to a better way to accomplish this.
>
> Thanks,
> Bryan.

--
Alexey Klyukin wwww.commandprompt.com
The PostgreSQL Company - Command Prompt, Inc

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