[rabbitmq-discuss] Creating exchanges on demand.

[Alexis Richardson]

Creating a lot of exchanges is fine, but many designs naturally fit
just a few.  There is no 'one' answer.



On Fri, Jun 5, 2009 at 8:30 PM, Camilo Lopez<camilol at gmail.com> wrote:
> Thanks for the link ,
>
> No I had not seen it , I'm not using Java (using ruby btw) so I did
> not really looked into the Java client specifics.  I just checked and
> one of the ruby libraries does implement an RPC convenience.
>
> I guess this will be a better idea that what I'm doing now, but in
> genral is it a bad idea do create a bunch of Exchanges?
>
>
> On Fri, Jun 5, 2009 at 3:03 PM, Arvind Jayaprakash <work at anomalizer.net> wrote:
>> On Jun 05, Camilo Lopez wrote:
>>>Hello list,
>>>
>>>I'm pretty new to AMQP and Rabbit. I'm trying to solve a problem where
>>>I have a queue of incoming jobs and a pool of worker process. Some of
>>>the jobs have to be processed syncrhonically.
>>>
>>>There is one producer process feeding jobs to a incoming queue (q1),
>>>every job has a unique id encoded in the message. All the workers read
>>>from q1, do the  processing and put back the result in a outgoing
>>>queue (q2) using the unique id as routing key.
>>>
>>>When a job is synchronous, the producer will subscribe to q2, waiting
>>>for a result tagged with the unique id  assigned when it was put in
>>>q1.
>>>
>>>Now, in order to wait for a specific message the producer creates a
>>>new exchange for every synchronous job  with the unique id as key and
>>>binds it to the queue before subscribing.
>>>
>>>Now the question/s:
>>>
>>>Is it OK to create a large number of exchanges? is it going to impact
>>>performance?
>>> or  Am I doing something terribly wrong here? is there a best
>>>practice I can refer to? if so any advice on the correct way to do
>>>this would be appreciated.
>>
>> Have you looked at this?
>> http://www.rabbitmq.com/api-guide.html#rpc
>>
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>
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