[rabbitmq-discuss] channel-cache-size

Thu Jul 17 14:50:53 BST 2014

I can answer number 2)

Only a single connection is used for all channels (by default). The cache
size is how many channels are cached (saved in a cache when "closed"
instead of actually closing them). It does not preallocate channels, they
are created on-demand and when "closed" either put in the cache or
physically closed if the cache is full.

It's generally more efficient to multiplex channels over a single
connection but you can configure the Spring CachingConnectionFactory to
allow multiple connections if you need to for some reason.

On Thu, Jul 17, 2014 at 9:34 AM, PATAR, SAGAR <sp345s at att.com> wrote:

>  We are using spring rabbit mq to configure the connection , connection
> factory , listener etc ..
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> We are trying to understand how the below properties work ..
>
> 1)      The requestedChannelMax in com.rabbitmq.client.ConnectionFactory
> ….. Does this only set the upper limit on how many we can create  ..
> Meaning this will  NOT influence the no. of channels created during
> initialization and will restrict NOT to create more than this number
>
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> 2)       The channel-cache-size in the below bean initialization
>
> <rabbit:connection-factory id="connectionFactory" connection-factory="cf"
> channel-cache-size="${session.size}"/>
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> Do we use this property used to create the channels upfront ?? ..
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> Does every channel opens a new socket to the server … How is opening a
> channel different from connection …
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> What is the advantage of opening a channel vs connection by using
> connection mode?
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>
> Please help us to understand the above.. appreciate all the help
>
>
>
> -Sagar
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