Networking Requirements. The hub-and-spokes model has been proposed as a basic unit for the data integration architecture because of its simplicity and scalability. In the model, network connections (spokes) are arranged so that all traffic from connected nodes goes through a central hub working as a message broker. A drawback of the approach is that a hub presents a single point of failure. Also, communication can be slow because of the extra step posed by the hub. These problems can be addressed:
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