I have a question regarding fxa-notification-server and its design.

It’s about the expected behavior in relation to message handling and the
subsystem it will work with.

Will this component enforce the requirement of order over the guarantee
of reception?

I ask this because after reading the EPIC
mozilla/fxa-notification=server#4 [1] and looking at the code, I wonder
what MQ will be supported and the design decisions for the first release.

On the WebPlatform Project, we are considering to deploy a message queue
system using [NSQ](http://nsq.io/overview/features_and_guarantees.html)
which allows "horizontal scale". The NSQ project says its designed in a
way that you can add nodes and, it takes care by itself to detect peers
without configuration changes.

But this benefit has its price; they guarantee delivery, but not the
order in which subscribers will get the message.

All that being said, will fxa-notification-server require messages to be
in order or not?

Thanks for reading.

[1] https://github.com/mozilla/fxa-notification-server/issues/4

-- 
Renoir Boulanger    http://www.w3.org/People/#renoirb
@renoirb                 https://renoirboulanger.com/
World Wide Web Consortium (W3C)    http://www.w3.org/
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