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The "HedWig" page has been changed by mahadevkonar. http://wiki.apache.org/hadoop/HedWig?action=diff&rev1=6&rev2=7 -------------------------------------------------- While there are a lot of commercial and open-source products in the general pub-sub category, none of them satisfy all the above 4 requirements (they mostly fail on 3 and 4). - == Architecture == + === Architecture === At the highest level, Hedwig is a collection of *regions* spread across the internet. Any region may publish on a topic, and those messages must be delivered to any subscriber in any region that has subscribed to that topic.
