MQ architecture query

Hi guys, I'm investigating ActiveMQ for a trial in the following scenario: 1. End-customer own ships/planes/boats (3-5 vessels) that are linked to the HQ on land via Satellite 2. Satellite provisions on-demand datalink 3. Data will need to be sync between HQ and vessels on a regular basis 4. Sate

Re: Does ActiveMQ have the concepts of lazy writes to disk?

thanks Dejan, that worked perfect :) -- View this message in context: http://activemq.2283324.n4.nabble.com/Does-ActiveMQ-have-the-concepts-of-lazy-writes-to-disk-tp3040432p3044084.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: Concurrent consumers

Hey, I just noticed that when I run only one of the consumers in the example, one message stays in the queue and does not get consumed. If I start both consumers all messages are consumed. Can you explain this scenario ? I am using as a connection factory URL : tcp://localhost:61616?jms.prefetchP

Re: Concurrent consumers

Great. That was it. Thanks. -- View this message in context: http://activemq.2283324.n4.nabble.com/Concurrent-consumers-tp3041439p3043739.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.

Re: "Network of Brokers" and persistence

networks of brokers in activemq are store and forward. So a persistent message will only exist on one broker at a time. If can start on the embedded broker and get forward to a networked broker if there is demand, In which case it will be removed/consumed from the embedded broker and sent to the ta

Re: "Network of Brokers" and persistence

I have however also notice that persistent doesn't appear to handle failover well when in a network of brokers setup. For instance say you have 3 brokers with a consumer attached to each. All connected in a persistent style. If broker 1 goes down and the consumer switches over to broker 2. Any mess

Expected performance with request/reply

Hi I wonder what performance is expected with request/reply, in queries/second We see about 500qps, just roundtripping to another server, is this low? When we just dump messages to the activemq instance we can send approx 5000 messages per second

Re: "Network of Brokers" and persistence

If you think of persistence in the same way you would a POP3 store, i.e the object of the persistence store is more to provide reliability in that 1: Write incoming message to disk, 2: Maintain a journal of actions taken to the message 3: Remove the message from the store once consumed. So the

"Network of Brokers" and persistence

I am in the phase of imagining what using ActiveMQ to design a wrapper around a legacy process would look like, and reading the book, which I have bought. I should say that I am impressed so far with ActiveMQ and the mapping of what it does with what I am trying to do seems very good. I am tr

Re: Does ActiveMQ have the concepts of lazy writes to disk?

Hi, you can use asynchronous sending. See http://activemq.apache.org/how-do-i-enable-asynchronous-sending.html and http://activemq.apache.org/async-sends.html for more info Cheers -- Dejan Bosanac - FuseSource - The experts in open source integration and messaging. Email: dej...