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From Tore Halset <>
Subject Re: Cayenne with JGroups replication
Date Tue, 23 Dec 2008 18:50:07 GMT

Cayenne uses jgroups to synchronize the caches. Use ha-jdbc or sequoia  
to sync the databases.

  - Tore.

On Dec 23, 2008, at 16:39, Pirola Davide <>  

> Hi,
> i'm developing a web application that need to store some data.
> For some reasons i can't have a database installed on a cluster, so  
> I inted to use Apache Derby (Java DB embedded in the JDK 6.0).
> The main issue is due to the fact that i have 2 front end server so  
> I need to synchronize the data stored in the 2 instance of the Derby  
> database.
> My idea is to use JGroups to permit to the servers to communicate in  
> multicast way and manually realize the synchronization.
> Whit a great surprise I found this article in the Cayenne manual:
> so cayenne already perform this kind of job?
> Where I can find some documentation or example about it?
> This solution can be used in production with a high traffic web site?
> Thanks
> Davide
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