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From Filip Hanik - Dev Lists <>
Subject Re: TomcatCluster data replication
Date Wed, 06 Apr 2011 19:32:12 GMT
On 4/6/2011 1:22 PM, J├╝rgen Jakobitsch wrote:
> hi,
> i'm in need of data replication in a tomcat-cluster.
> i set up a tomcat cluster of three tomcats on a single machine with a apache (mod_jk)
front that does the load balacing.
> everything works absolutely charming for reading requests, my trouble start with data
> what i'm trying to achieve is that if i submit data with a html form, the storage on
all cluster members needs to be updated.
> i'm using an openrdf's sesame triple store which locks it's data directory so i can't
simply use a single shared directory
> in my application.

sounds like a limitation of sesame. Use some other noSQL data store and you wont have this


> what i have in mind, after first readings, is some sort of clustervalve that checks,
if a request is a POST request and if
> yes, sends this request (which updates the repository in the back) to all members of
the cluster.
> so here would be my questions :
> 1. is there a standard way of doing something like (which a not-clusterable data-backend)
> 2. is the thing with the clustervalve in fact the correct starting point
> any help or pointer to the right direction greatly appreciated
> wkr

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