openstack team mailing list archive

[Jorge Williams <jorge.williams@xxxxxxxxxxxxx>]

Huh?  I didn't write that.  George did.

On Oct 28, 2011, at 11:35 AM, Caitlin Bestler wrote:

> Jorge Williams wrote:
> 
>> Push notifications don't make your core system any more complex. You push the change to a message queue and rely on another system to do the work.
> 
> That is only true if the messaging system and the core system are largely independent, which could have some implications that would probably be fine for
> most human users but could be quite problematic for applications.
> 
> Can the push notification system block the core system? If not the push notifications ultimately become unreliable. A human who is not notified that
> a given update once in 10,000 times is probably just going to shrug it off.  But an application that needs to know it is looking at the most recent version
> of a document before it modifies it is ultimately going to have to rely on polling, or have the notification be built into the core system complete with
> throttling of updates when absolutely necessary to ensure that notifications are sent.
> 
> 
> 
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