[rabbitmq-discuss] Is it possible to get a "push" when number of messages reaches threshold?

Mon Jun 2 13:05:41 BST 2014

Something along those lines, yes. Note that this is borderline hackish.

Also keep in mind to always CC the RabbitMQ discuss list.

On Mon, Jun 2, 2014 at 1:20 PM, rails <stammailbox at gmail.com> wrote:

> @Alvaro,
> I already have a DLE but I can't see how it can assist me in working on
> bulks. Do you mean I can subscribe to a queue in the DLE and than when a
> message arrives - start to consume from the original queue that was filled?
> and then move the message back from DLE to the queue? maybe I failed to
> understand...
>
>
> On Sun, Jun 1, 2014 at 6:18 PM, Alvaro Videla <videlalvaro at gmail.com>
> wrote:
>
>> Hi,
>>
>> I'd guess this could be attempted using queue length:
>> http://www.rabbitmq.com/maxlength.html and setting up a separate dead
>> letter queue for that 5000th message.
>>
>> Regards,
>>
>> Alvaro
>>
>>
>> On Sun, Jun 1, 2014 at 3:37 PM, Michael Klishin <mklishin at gopivotal.com>
>> wrote:
>>
>>> On 1 June 2014 at 17:34:11, rails (stammailbox at gmail.com) wrote:
>>> > > 1. What is the best practice to get the number of messages in a
>>> > queue.
>>> > I know I can get it via queue.getMessageCount()
>>>
>>> Do a queue.declare (possibly with passive = true), check # of messages
>>> ready from
>>> queue.declare-ok. You can also query queue stats using HTTP API.
>>>
>>> > What is the best way if I want to react only when X messages arrive?
>>>
>>> Add a consumer and process deliveries in batches  in your own code.
>>>
>>> > 2. And more important - can I get the number of messages in a queue
>>> > via push?
>>>
>>> There is no such feature in RabbitMQ. You have to periodically check the
>>> counter.
>>> --
>>> MK
>>>
>>> Software Engineer, Pivotal/RabbitMQ
>>> _______________________________________________
>>> rabbitmq-discuss mailing list
>>> rabbitmq-discuss at lists.rabbitmq.com
>>> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>>>
>>
>>
>
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