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From Tim Bain <>
Subject Re: Network of brokers and destination policies
Date Fri, 11 Aug 2017 06:00:28 GMT
What resources are you concerned about? Are you trying to load-balance the
work across the two applications (i.e. you're concerned about CPU and about
pre-allocating messages to a particular application), or are you worried
about running out of space in the brokers' message stores? Or something

If you're concerned about filling the message stores (since you mentioned
PFC), then yes you do need to configure policies on Broker 3 as well. But I
didn't follow the final bit about percentages for Broker 1 and Broker 2.


On Aug 10, 2017 9:53 AM, "rth" <> wrote:

> Here's a simplified diagram of my broker network:
> <>
> Application 1 and Application 2 both both use messaging internally. Their
> messages do not need to be distributed across the broker network.
> The applications consume messages from the clients that all connect to
> Broker 3. However, processing of those messages is relatively slow.
> Therefore, Broker 1 and Broker 2 are configured with destination policies
> for the external destinations so they do not consume 100% of the brokers'
> resources, and we enable flow control so the clients will slow down
> production of those messages.
> If I understand you correctly, we must also configure destination policies
> for those external destinations on Broker 3. Otherwise, when Application 1
> pushes back, Broker 3 would use 100% of its resources for that destination,
> right?
> Furthermore, I cannot just copy the destination policies: I need to
> determine what percentage of Broker 3's resources will be used by
> Application 1 and Application 2 messages.
> Does that sound right?
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