GeoRep—Resilient Storage for Wide Area Networks

Embedded systems typically have limited processing and storage capabilities, may only intermittently be powered on. After sending an event upstreams with data from its sensors, the system must therefore able to trust that data, once acknowledged, is not lost. The purpose of this work propose a novel solution for replicating between nodes in such systems, minimal effect on software architecture. Based assumption there would no relative order replicated tuples, we designed new replication protocol which uses 2 communication steps per tuple, instead 3 12 used by other solutions. We verified failover mechanism proof-of-concept implementation using simulated network failures, evaluated throughput latency several controlled experiments up 7 5 geographically separated areas, 1000 producers node. recorded increased linearly both number producers. For comparison, Paxos showed similar performance as our protocol, but it got slower when were added. lack order, combination partial replication, enables continue working during partitions, part containing majority nodes, also any sufficiently large minority partitions.