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Proceedings of the 17th International Middleware Conference on - Middleware '16
This paper presents Atum, a group communication middleware for a large, dynamic, and hostile environment. At the heart of Atum lies the novel concept of volatile groups: small, dynamic groups of nodes, each executing a state machine replication protocol, organized in a flexible overlay. Using volatile groups, Atum scatters faulty nodes evenly among groups, and then masks each individual fault inside its group. To broadcast messages among volatile groups, Atum runs a gossip protocol across thedoi:10.1145/2988336.2988356 fatcat:62mtyjevprhppledyi6ogvyrji