Very asynchrnous replication system

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От Laurent ROCHE
Тема Very asynchrnous replication system
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Msg-id 688748.6664.qm@web34406.mail.mud.yahoo.com
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Ответы Re: Very asynchrnous replication system  (Ben <bench@silentmedia.com>)
Re: Very asynchrnous replication system  ("Greg Sabino Mullane" <greg@turnstep.com>)
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Hello,

I must replicate (or synchronise) data between disconnected postgreSQL databases ... hence a replication "very asynchronous"!

Application description
This an application to manage sales forces with a central application (and postgreSQL server) where everybody in the office can connect (this a web application: Tomcat with Spring 2+ Struts 2 + iBatis + PostgreSQL).
But there are also "little itinerant applications": the sales rep have the application on their laptop and a PosgreSQL server with a copy of the data (they are interested in ) from the main server database.
From time to time, the sales reps connect to the internet and request a data synchronisation: they send their modification and receive the headquarters modification.
(no problem about data overlap: the data owner is clearly identified by the application framework)

My problem:
Does such an existing system (the replication one) exist ?
I search the web I did not find anything !
I have started to do something (with triggers, log table and table export - using DDL-Utils) ... but looking at the spreadth of the task layed out in front of me, I am thinking that I will be better off using or adapting an existing replication system

 
Have fun,
L@u
The Computing Froggy



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