Is there any way in ActiveMQ to perform load balancing / clustering - that is, to have two or more servers acting as one, where messages sent by a consumer are distributed evenly amongst the servers in the cluster?

I see support for high availability / failover, but not sure if there's a way to have clustering also

dblevins: coolio :)

jstrachan: is there a way to build the test jar in amq without actually running the tests ?

mvn test -Dtest=foo

(with that other flag that damn mvn insists you specify that I forget)

I've a 'mvnnt' script

#!/bin/sh

mvn -Dtest=false -DfailIfNoTests=false clean install

which builds all test jars but doesn't run any tests

TomJ: yes.. use networks of brokers

chirino_m: ok, and that does load balancing also? my understanding of that was that it was for failover only, so server1 is used exclusively until it dies, then server2 is used exclusively etc. Is that wrong?

it is true but they forward messages between each other

so you can have a producer on broker a and a consumer on broker b.. and the consumer will get the messages from the producer

What is the difference between

What is the difference between activemq messageID and correlationID?

I know correlationID is from JMS specs but, want to make sure I understand the relationship between these 2

former set by JMS on each message, latter set by user on any messages (and can be same value on many messages)

thx!

Sorry for the re-asking. Please let me know if you would rather i address this via the mailing. I suspect I'm just being an idiot and don't want to create noise

;)

I guess I should actually ask a question! What's the right way to set-up our bridge so that (1) it starts up w/o an active external queue, (2) doesn't block producers if something is wrong with the external queue, and (3) attempts to reconnect periodically to the external queue?

chirino_m: ok great thanks very much, I'll benchmark it

how durable is amp for large number of messages?

very

any settings I should change on amqPersistenceAdapter to handle large number of outstanding messages?

seems like indexBinSize might be a good one to increase?

any advantage to increasing the maxFileLength?

yep - that would be good - jut putting in auto resize of that

how do I do auto-resize?

you can't yet - just putting that in

ahh, so I creased ndexBinSize="2048"

any advantage of increasing filelength?

the best change increasing binsize - to say 10240

not really, the file length is 32mb by default

what about file length?

bigger better?

the downside is they take longer to clear up when messages get read

bigger files?

ok - if you insist - bigger files! ;)

no, I meant is it better to have a few larger amp files, or a bunch of smaller ones?

better to have a bunch of smaller files - I wouldn't change the default

hey all.

What happened to the java service wrapper script in the new 5.1 release?

ah, I assume it got replaced with activemq-admin?

hrm... no...

I have question regarding discovery

If I want to turn off discovery of other brokers, all I need to do is comment the <networkConnector> entry?

Warden: you on linux?

we messed up the packaging a little. just copy the macosx/activemq to linux-*/

yeah. Okay, thanks.