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SwarM: a Lightweight Hybrid Message-oriented Middleware

This paper presents Swarm, a message-oriented middleware (MoM) using a hybrid infrastructure; a collection of (lightweight) IoT devices, arranged in clusters. The light infrastructure hosts a mechanism that combines a swarm intelligence algorithm and a gossip protocol for message dissemination. The resulting system is open, available and reliable. It offers an exactly-once message delivery guarantees by default but could fall back to at-most-once when too many IoT devices fail or leave the infrastructure.