Harvey Li wrote:
[email protected]>, <[email protected]> Cc:
<[email protected]>
So I need to start openais first before starting broker? I have no
idea of openais before. Thanks. I will try it later.
Yes, have a read of the 'configuring ais' section in the INSTALL notes
for some hints.
For the cluster, in a word it combine the load-balancing and failover
feature together. I don't need to worry anything(like message lost or
delay). I could add a broke or kill a broke anytime, right?
It provides redundancy through replicating broker state. An enqueued
message will exist on all nodes and will thus not be lost when any node
fails (providing it is survived by at least one other node). Until a
message is enqueued however it is 'in-doubt' and may need to be replayed
on failing over.
Though each cluster node is active and will accept clients connections,
the degree to which this balances load should not be overstated as each
node will process the same sequence of inputs in order to keep the state
consistent.
--Gordon.
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