Thread: Very asynchrnous replication system
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
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
L@u
The Computing Froggy
Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail
The MusicBrainz project replicates in a way that sounds like it could fit your needs. It depends on a lot of perl, but if that's not a showstopper, then maybe adapting their replication scheme would work for you.
On Oct 5, 2007, at 5:25 PM, Laurent ROCHE wrote:
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 systemHave fun,
L@u
The Computing Froggy
Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! Mail
-----BEGIN PGP SIGNED MESSAGE----- Hash: RIPEMD160 > I must replicate (or synchronise) data between disconnected > postgreSQL databases ... hence a replication "very asynchronous"! Check out Bucardo (http://bucardo.org). It should be able to do what you want with a "swap" sync (master-master). If the rows truly do not overlap at all (by PK), you may also be able to set it up as a dual "pushdelta" (master->slave both ways). - -- Greg Sabino Mullane greg@turnstep.com End Point Corporation PGP Key: 0x14964AC8 200710080824 http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8 -----BEGIN PGP SIGNATURE----- iD8DBQFHCiHPvJuQZxSWSsgRA0/2AJ9MJOD8ekFHhvbwYgKZf+cV6ApSoACePl+O +sOlZmm7JMAxnOowxJy3ux8= =Bv0v -----END PGP SIGNATURE-----