On Mon, Dec 9, 2013 at 7:47 AM, Jose María Zaragoza <[email protected]> wrote: > Thanks for your reply > > I'm trying to understand the advantages of enabling producer control > flow in broker's activemq.xml configuration file, when I use > non-persistent delivery > > Sorry, but I don't see any advantage, because I only can get a > blocking in my producer. > On the other hand, if I disable it , control flow is still managed by > broker and messages for slow consumers are off-lined to disk storage
Well, this of course depends on your configuration. If you're configured to not use persistence or to use VMCursors, you could very well OOM :) > > Futhermore, I've read that non-persistent messages are persisted to > disk ( feature from AMQ 5.x ) , so it's more difficult that memory > runs out If using a filePendingMessageLimitStrategy > > Which are advantages to enable producer control flow with > non-persistent delivery ? > > If non-persisted message are persisted to disk ( by default ) , what > is the advantage of non-persistent mode ? > > > Thanks and regards > > > > 2013/12/9 Christian Posta <[email protected]>: >> Yes, the protocol between the broker and client for sending/receiving >> messages is still the same, ie, you would continue to get ACK messages >> from the broker. >> >> If you set a producer window size, then byte counting/flow control is >> handled at the client side for the default JMS openwire client. so you >> would still experience throttling based on the client settings. >> >> >> >> On Mon, Dec 9, 2013 at 6:06 AM, Jose María Zaragoza >> <[email protected]> wrote: >>> Hi: >>> >>> I'm using AMQ 5.8 and I've got some basic questions about producer control >>> flow >>> >>> - if I disable producerControlFlow in broker , does still producers >>> receive ProducerAck messages/commands ? >>> >>> - if I disable producerControlFlow in broker, the producers who send >>> persistent messages , does still they receive ProducerAck >>> messages/commands? >>> >>> - if I disable producerControlFlow in broker and my producer sets >>> window size ( setProducerWindowSize ), what is the behaviour ? >>> >>> >>> Thanks and regards >> >> >> >> -- >> Christian Posta >> http://www.christianposta.com/blog >> twitter: @christianposta -- Christian Posta http://www.christianposta.com/blog twitter: @christianposta
