Configuration issue

[danieltravin]

Hi all,

I have a object tree like this inside my jboss cache cluster
/country/city
So, there are many countries and many cities inside each country.

I need to have only one JVM on the LAN that is aware of the whole object tree, so i use a default config for that.

I also have a lot of other JVMs but they are logically linked to a "city" and "country"

So, 1 single JVM can manipulate with only 2 nodes for example /Argentina/BuenosAires and /Argentina

Basically i d like to say to cache
"I want to replicate these nodes only Node1, Node2. Do not replicate other, i will not use them"

What element in configuration is responsible for this?

[manik]

Hmm - if there is no other shared data at all, you could use non-clustered caches in all of your JVMs that actually use the country/city data, configure them to use a TcpDelegatingCacheLoader, and then set up a single cache on a single JVM with all of your data, and stick a TcpCacheServer in front of it.

[danieltravin]

I think I understand you advise, but i doubt whether this appoach synchronize data between JVMs that use same node if none of them is a coordinator?

Example of JVMs and nodes that they use

Coordinaror JVM
/UK
/UK/Cardiff
/UK/London
/UK/Bristol
/Spain
/Spain/Madrid
/Spain/Barselona

JVM1:
/Spain
/Spain/Madrid

JVM2:
/UK/Bristol
/UK

JVM3:
/UK/Cardiff
/UK

JVM4:
/Spain
/Spain/Barselona

So, when JVM3 changes a leaf of /UK, the instance of JBC must propagate changes to JVM2 and to coordinator immediately.
As far as I see from the source code TcpDelegatingCLassloader will send changes only to coordinator JVM node through CacheServer.

And does this TCPDelegatingCacheLoader make use of UDP and multicasting?

My problem is that I am trying to cluster a TreeCache between JVMs on the LAN. But I do not want to share the entire tree between all members of the cluster in order to reduce traffic.

The configuration I expect to exist is like this
For coordinator JVM

<clustering mode="replication" clusterName="MySmartCluster" coordinatorNode="true">

For JVM1

<clustering mode="replication" clusterName="MySmartCluster" coordinatorNode="false">
<fgnlist>
 <fqn>/Spain</fqn>
 <fqn>/Spain/Madrid</fqn>
</fqnlist>

Etc.

I think my question is clear.