On Jan 24, 2008 10:38 AM, Kevin k <[EMAIL PROTECTED]> wrote: > > A quick question or 2 about jms providers: > Lets say a jms queue has many,many messages in it (messages going in quicker > than being processed) > > 1) how many messages are worked on at one, or to ask it another way how > many threads does the jms provider kick off by default?
It's not matter of threading in the broker as much as it's a matter how how fast the consumer is and how many consumers there are. Threading in the broker will certainly affect how quickly messages are delivered to any consumer, but if that consumer can't keep up with the message dispatching then you need to etiher throttle the dispatching, add more consumers or both. > 2) Is this number changeable? > 3) Assuming we have activeMQ setup correctly (load balanced, master slave, > anything else?), is there any problems running several the identical jms > provider on different servicemixes to get load balancing. As long as you have the same SAs deployed on each instance of ServiceMix and the underlying ActiveMQ instances are set up in a network of brokers (http://activemq.apache.org/networks-of-brokers.html) if/when one of the instances crashes, the messages will be load balanced. Setting up this type of environment requires a lot of testing because there are many possible configurations for ActiveMQ as you began to point out by mentioning master/slave, etc. Are you experiencing some type of issue? If you are having a problem then we should discuss that problem specifically. It's always better to talk about a concrete problem that *is* happening instead of talking at such a high level about how things *should* work. Bruce -- perl -e 'print unpack("u30","D0G)[EMAIL PROTECTED]&5R\"F)R=6-E+G-N>61E<D\!G;6%I;\"YC;VT*" );' Apache ActiveMQ - http://activemq.org/ Apache Camel - http://activemq.org/camel/ Apache ServiceMix - http://servicemix.org/ Apache Geronimo - http://geronimo.apache.org/ Blog: http://bruceblog.org/
