[rabbitmq-discuss] smallest amount of work for a consumer

[Michael Klishin]

2013/5/14 ppafford <phillpafford at gmail.com>

> So my question is, when would I break out the bullet points into smaller
> consumers? The consumer as is runs fine but I feel it's getting too large
> and needs to be refactored into smaller, more manageable processes.
>
> Should each bullet point be it's own consumer? I can see breaking them up
> into three consumers
>

Do these steps have any interdependencies between them, e.g. C depends on A
being done?

How are your queues organized? Is there a single message that triggers all
these operations?

If these steps can be described as a single unit of work, you can use a
single consumer
with explicit acknowledgements and structure your code as a composed method
[1],
then acknowledge the message at the end.

If there are reasons to try to parallelize these steps, multiple queues and
consumers may help.

1. http://codebetter.com/jeremymiller/2006/12/03/composed-method-pattern/
-- 
MK

http://github.com/michaelklishin
http://twitter.com/michaelklishin
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