[rabbitmq-discuss] Hi, question about Scheduled Message Delivery

[Randall Richard]

Regarding the caveats and triggering expiry only on a message at the head
of the queue, are there plans to support message expiration independent of
position in queue?

Just to clarify on the current 3.0 implementation, if I understand this
correctly, this means that if I have two unconsumed messages (e.g. the
queue's consumer has disappeared for several minutes) where the first
message has no TTL and the second has a 5 second TTL, this 5 second TTL
message will not be dead lettered until the non-TTL message is consumed?

Thanks,

-Randall

On Wed, Nov 28, 2012 at 2:54 AM, Matthias Radestock
<matthias at rabbitmq.com>wrote:

> On 28/11/12 07:21, Michael Klishin wrote:
>  > 2012/11/28 Tanya Skuridina <tantigrenok at gmail.com
>
>> <mailto:tantigrenok at gmail.com>**>
>>
>>
>>     I have an interesting question about delayed message consuming - Is
>>     it possible to publish a message to be consumed at a later date (set
>>     somewehere in params)?
>>
>>     Anybody else encountered this problem?
>>
>>     I found this link
>>     http://blog.james-carr.org/__**2012/03/30/rabbitmq-sending-a-**
>> __message-to-be-consumed-**later/<http://blog.james-carr.org/__2012/03/30/rabbitmq-sending-a-__message-to-be-consumed-later/>
>>
>>     <http://blog.james-carr.org/**2012/03/30/rabbitmq-sending-a-**
>> message-to-be-consumed-later/<http://blog.james-carr.org/2012/03/30/rabbitmq-sending-a-message-to-be-consumed-later/>
>> >
>>
>>
>> Tanya,
>>
>> RabbitMQ does not support scheduled message delivery.
>>
>
> Well, it does, with the trick above, i.e. using a combination of message
> expiry (per-queue message ttl prior to 3.0, and that or per-message ttl in
> 3.0, though note the caveats http://www.rabbitmq.com/ttl.**
> html#per-message-ttl-caveats<http://www.rabbitmq.com/ttl.html#per-message-ttl-caveats>)
> and dead lettering.
>
> Regards,
>
> Matthias.
>
>
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