[jboss-user] [JBossCache] - Re: Transactions

[manik.surtani@jboss.com]

Hi

The differences are that approach 1 treats C as a store of data.  Approach 2 treats C as a peer.

Even with approach 1, data changes in C will be picked up by B if the node didn't already exist in B or if the node was evicted.  So if your requirement isn't for changes in C to be seen in B *in real time*, then an eviction policy on B will ensure that changes are seen up to a certain delay.

With approach 2, you shouldn't have too much information if all the state in C is relevant to B.  

Re: your question on txs, this will still work since changes to the TcpCacheLoader are written in 2 phases as well, a prepare and commit phase and only when B1 or B2 successfully commits will the TcpCacheLoader be instructed to commit changes.



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