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From Tor Rune Skoglund <...@swi.no>
Subject Re: Large messages to groups of receivers
Date Thu, 27 Feb 2014 20:18:38 GMT
Thanks once again.  :)

Best regards,
Tor Rune Skoglund, trs@swi.no

Den 27. feb. 2014 21:03, skrev Ted Ross:
>
> On 02/27/2014 02:56 PM, Tor Rune Skoglund wrote:
>> A good. Thanks a lot! :)
>>
>> (Still, technically, it should probably be possible to add that feature
>> on durable messages also - i.e. sharing the same payload reference?
>
> Yes.  We're always happy to accept code contributions :)
>
>>
>> And, btw, I presume durable in this case is referring to the message
>> (i.e. "persistent"), and not durable queue/exchanges? We are in the
>> process of learning Qpid here, so the terminology can be a bit confusing
>> at times... :) )
>
> For a message to consume space on disk, both the message and the queue
> it's on must be marked as durable.  We allow interleaved durable and
> transient messages on the same durable queue.
>
>>
>> Best regards,
>> Tor Rune Skoglund, trs@swi.no
>>
>> Den 27. feb. 2014 20:36, skrev Ted Ross:
>>> Speaking for the C++ broker:
>>>
>>> If the messages are transient (i.e. not durable), the enqueued
>>> messages will all be a reference to a single in-memory instance of the
>>> message content.  Don't use durability for these cases, they will be
>>> individually stored on disk (requiring 4TB of journal space).
>>>
>>> -Ted
>>>
>>> On 02/27/2014 02:23 PM, Tor Rune Skoglund wrote:
>>>> Hi,
>>>>
>>>> when sending large messages (say, 4GB) from a server to a group of
>>>> receivers (say, 1000 of them) where each of them have their own
>>>> queue on
>>>> the server side, will the server side broker queues "refer" to the
>>>> same
>>>> payload (in memory/on disk), or will the payload get duplicated on
>>>> each
>>>> queue?
>>>>
>>>> Best regards,
>>>> Tor Rune Skoglund, trs@swi.no
>>>>
>>>>
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>>
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>
>
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