[rabbitmq-discuss] Unexaplainable behaviour with shovel plugin.

[Laing, Michael]

Actually shovels can be configured to push or pull - we use them both ways.

Our proxies are passive (no shovels) with well-known addresses - we use
shovels to push and pull to them from both sides.

Our retail layer autoscales but the wholesale layer has known addresses -
we run shovels in the retail instances, some pushing and some pulling.

Soon we will be using serf gossiping for topology/address/role discovery in
nyt⨍aбrik, and the need for known addresses will diminish greatly.

ml


On Tue, Mar 4, 2014 at 2:21 PM, Jason McIntosh <mcintoshj at gmail.com> wrote:

> The big thing for us was it was a push vs. pull mechanism.  In a
> distributed system, where we have a lot of nodes talking to an enterprise,
> it's much more efficient to have the nodes shovel to the enterprise than to
> have to have the enterprise have to know about every server connected to
> it.
>
> Jason
>
>
> On Mon, Mar 3, 2014 at 6:26 AM, Simon MacMullen <simon at rabbitmq.com>wrote:
>
>> On 28/02/2014 6:14PM, Ben Hood wrote:
>>
>>> Using federation to implement an AMQP gateway seems like a common
>>> pattern. One wonders why it didn't go into the AMQP spec ....
>>>
>>
>> I dunno, I think federation is really quite specific (I don't think there
>> are any other brokers which do it in the same way as RabbitMQ) - I can see
>> the spec authors not wanting to predict how people will want to federate.
>>
>>
>>  Initially I had thought that the 'new' federation replaced the 'old'
>>>> shovel,
>>>> but this is not true - each tool has its place although their
>>>> capabilities
>>>> overlap.
>>>>
>>>> With easier configuration in 3.3, the lowly shovel may get its due!
>>>>
>>>
>>> It's interesting to see that the shovel still lives on, despite it
>>> being quite an agricultural component.
>>>
>>
>> I think the concept ("I just want to move the damn messages!") makes a
>> lot of sense.
>>
>> If I were creating RabbitMQ from scratch, I might rename the shovel to
>> something like "point-to-point federation" to make it a bit clearer that it
>> complements federation rather than being replaced by it.
>>
>>
>> Cheers, Simon
>>
>> --
>> Simon MacMullen
>> RabbitMQ, Pivotal
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>>
>
>
>
> --
> Jason McIntosh
> https://github.com/jasonmcintosh/
> 573-424-7612
>
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>
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