Communication Paradigms - Connect
Communication Paradigms - Connect
Communication Paradigms - Connect
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Flooding<br />
Realising Content-based<br />
Approaches<br />
Send all published events to all possible recipients, or<br />
alternatively all subscriptions back to all possible senders<br />
Can be supported by underlying multicast service as available<br />
Simple but significant message overload<br />
Filtering<br />
Filters propagated back through the broker network with the<br />
intuition that notifications are only forwarded through the broker<br />
network if there is a path to a valid subscriber<br />
Advertisements<br />
In above scheme, filters need to be sent to all possible publishers<br />
Overhead can be reduced by use of advertisements<br />
Adv. Dist. Systems G. Blair/ F. Taiani 42