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From Lionel van den Berg <lion...@gmail.com>
Subject Re: [Artemis] - Can last value queue be sent to multiple consumers?
Date Sun, 29 Oct 2017 10:01:18 GMT
One more question, I've read the documentation several times and plan to
implement soon and test some scenarios. Can the multicast work for a client
who is connecting for the first time? Will they immediately get the last
value?

On 13 August 2017 at 09:10, Justin Bertram <jbertram@redhat.com> wrote:

> A multicast address is something you configure on the ActiveMQ Artemis
> broker.  See more details in the documentation [1].
>
>
> Justin
>
> [1] http://activemq.apache.org/artemis/docs/latest/address-model.html
>
> On Sat, Aug 12, 2017 at 5:36 PM, Lionel van den Berg <lionelv@gmail.com>
> wrote:
>
> > I can be flexible on the protocol. Currently we are using openwire.
> >
> > For the option of a multicast address, is this an activemq configuration
> or
> > network configuration? OK, it's in activemq and there is some
> > documentation, I'll get to ready. At first glance it seems there are some
> > limitations, but it looks worth my time to understand how it would work.
> >
> >
> > On 13 August 2017 at 07:05, Justin Bertram <jbertram@redhat.com> wrote:
> >
> > > What client protocol/API are you going to be using?
> > >
> > > I think you could accomplish what you're after by using a multicast
> > address
> > > with multiple last-value queues which represent all your workstations.
> > How
> > > you access those will depend on what protocol/API you decide to use.
> > >
> > >
> > > Justin
> > >
> > > On Fri, Aug 11, 2017 at 5:13 AM, Lionel van den Berg <
> lionelv@gmail.com>
> > > wrote:
> > >
> > > > Hi,
> > > >
> > > > I'm currently using activemq and now looking into Artemis. One of the
> > > > interest features I see is the is the last-value queue option.
> However
> > > what
> > > > I want to use it for is for regularly updating data and not so
> regular
> > > > updating data where the last value is always the only interesting
> > value,
> > > > but where that data is interesting to multiple consumers.
> > > >
> > > > A bit more on my design thought in case I've missed another better
> > > > solution. I have many workstations that connect, disconnect and
> change
> > > user
> > > > role. They all use a sub-set of the same data that I want to publish
> to
> > > > dedicated queues (last value) or topics. When a workstation
> connects, I
> > > > want it to be able to get the most recent value immediately. I then
> > want
> > > > them all to be receiving updates as they happen. I can solve it
> through
> > > > triggering a publish in the software when a new workstation connects,
> > but
> > > > if the messaging system can help me then that is better.
> > > >
> > > > Thanks
> > > >
> > > > Lionel.
> > > >
> > >
> >
>

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