The REST style of Event notification works best when used in an environment that follows the basic premises of Publish-Subscribe. That is, many consumers are interested in the same events that are available from a single producer. On the other hand, if you attempt to use the REST-based style as a Queue, the approach tends to break down. Here is a summary of the good and the bad of the RESTful approach:
It is not very clear why the number of publishers and subscribers influences the choice of the style of event notification.
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