Ceilometer - dispatcher/publisher - what's the difference and which one is first in data flow?

asked 2015-06-26 12:02:51 -0500

foobarto gravatar image

Apologies for what may seem like a silly question but I'm trying to understand differences between Ceilometer publishers and dispatchers.

What are the typical use cases for each? When would you decide to write a new publisher and when a new dispatcher would be a better choice?

Also looking at the data flow (sequence of how data flows through Ceilometer) which one is called first? Or are they called in parallel?

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