I have now implemented a rather simple message caching server (about 50 lines of python) that will allow interested clients to inquire into the state of a named variable at anytime. Both the clients and the caching server use rabbitmq as their "transports". Very cool.<br><br>On Thursday, November 8, 2012 7:57:29 AM UTC-8, scott taggart wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;">As I research and better understand AMQP better, I learn that messages are never queued in an exchange - they are always routed to existing queues or tossed. Given my basic requirement that messages be queued for as-yet non-existent queues, this seems not possible directly with amqp/rabbitmq.<br><br>On Wednesday, November 7, 2012 8:40:47 PM UTC-8, scott taggart wrote:<blockquote class="gmail_quote" style="margin:0;margin-left:0.8ex;border-left:1px #ccc solid;padding-left:1ex">the rabbitmq tutorial 3 for python talks about the publish/subscribe
(fanout) model.
<br>
<br>I have this working for multiple subscribers but I need something
slightly different.
<br>
<br>The current model says that any subscriber sees only the messages AFTER
it subscribes (i.e., creates the subscriber Q) and this is the behavior
I see. I need to be able to see all messages ever sent to the
exchange. To be very clear, the current behavior is that if a publisher
produces messages 1, 2, 3 and C1 starts consuming after 2 but before 3,
the consumer only sees 3. Similarly, if C2 starts after message 3, it
never sees 1, 2 or 3. I need C1 & C2 to see 1, 2, & 3 regardless of
where they start in the publishing sequence.
<br>
<br>How can I create the Q after a fanout exchange is created so that that Q
sees all messages sent to an exchange to that point, not just post-Q creation? If it takes a different
exchange or Q model, please let me know.
<br>
<br>Your help is greatly appreciated. <br><div><br></div><div><br></div><div>---- please ecuse me if this message shows up twice - I wan't sure if the email request I sent earlier would end up here -----</div></blockquote></blockquote>