This is a new feature in 5.4 - so we are all newbies to it ;) - answers inlined: On 23 Jun 2010, at 06:02, Mark White wrote:
> > I'm a newbie at this, so please excuse any limitations in my understanding. > > We're looking at a load-balanced network of brokers with failover, using a > fixed list of URIs with 4 servers (A - D). We'll be using a common config > across brokers (except broker name). A JWS client will be used. > > Client: > failover:(nio://A:61616,nio://B:61616,nio://C:61616,nio://D:61616) > > Brokers: > <networkConnector name="example" > uri="static://(nio://A:61616,nio://B:61616,nio://C:61616,nio://D:61616)"/> > ... > <transportConnector name="openwire" > uri="failover:(nio://A:61616,nio://B:61616,nio://C:61616,nio://D:61616)" > updateClusterClients="true" /> > > Questions: > > 1) Does it matter if the broker's own IP is included in networkConnector? No - you will see a warning - but the broker won't connect to itself > > 2) If broker A goes down, and a client attempts to connect to broker A, is > it 'timeout' that affects how quickly the client will failover to a > different broker? Depends on the OS system - the underlying tcp protocol will usually throw an exception - first before a timeout in this case > > 3) The broker cluster is aware that A has dropped. How is > updateClusterClients represented at the client? Would it be similar to the > client connecting using a random broker from > "failover:(nio://B:61616,nio://C:61616,nio://D:61616)"? You don't need all the brokers (though it doesn't matter if you do) - the client will be updated automatically - but on the client side - use tcp:// instead of nio - you will get better performance. > > 4) If broker A is restored, will the client be advised of this on the next > successful communication with any broker? If not, when or how? Yes the client will be informed about it > > Thanks for any clarification anyone can give. > > > Mark... > -- > View this message in context: > http://old.nabble.com/Failover-and-updateClusterClients-tp28967819p28967819.html > Sent from the ActiveMQ - User mailing list archive at Nabble.com. > cheers, Rob Rob Davies follow me: http://twitter.com/rajdavies I work here: http://fusesource.com My Blog: http://rajdavies.blogspot.com/ I'm writing this: http://www.manning.com/snyder/
