... disseminate the events published in the topic Pastry and Scribe are fully decentralized, all decisions are based on local information, and each node has identical capabilities Each node can act as a ... publisher, a root of a multicast tree, a subscriber to a topic, a node within a multicast tree, and any sensible combination of the above Much of the scalability and reliability of Scribe and Pastry ... select alternative paths Both these schemes have some disadvantages The mechanisms that perform packet duplication consume additional bandwidth, and the mechanisms that select alternative paths...