Hi,
Sun recommends that clusters consist of either one or two daemons if persistent messages are being used.
This looks like a "heavy" constraint if one uses clusters on multi-hosts and one wants to have the message replication...
Can anyone share some experience on this?
Kind regards,
Guido
Guido,
A cluster can be spread across multiple hosts so long as there are no more than two daemons in the cluster for persistent messages. Each persistent message sent to daemon is replicated to the other daemon in the cluster and only acknowledged back to the producer after it has been written to the message stores of both daemons.
Whilst it is possible to configure this fault tolerant replication for more than two daemons in a cluster, this feature is not currently supported. This constraint may be removed in a future release of JMS Grid.
NB: This constraint does not exist for clusters that solely deal with non-persistent messages.
Regards,
Louis