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AS-cast: Lock Down the Traffic of Decentralized Content Indexing at the Edge

Adrien Lebre 1, 2 Brice Nédelec 1, 2 Alexandre van Kempen 1, 2 
Abstract : Although the holy grail to store and manipulate data in Edge infrastructures is yet to be found, state-of-the-art approaches demonstrated the relevance of replication strategies that bring content closer to consumers: The latter enjoy better response time while the volume of data passing through the network decreases overall. Unfortunately, locating the closest replica of a specific content requires indexing every live replica along with its location. Relying on remote services enters in contradiction with the properties of Edge infrastructures as locating replicas may effectively take more time than actually downloading content. At the opposite, maintaining such an index at every node would prove overly costly in terms of memory and traffic, especially since nodes can create and destroy replicas at any time. In this paper, we abstract content indexing as distributed partitioning: every node only indexes its closest replica, and connected nodes with a similar index compose a partition. Our decentralized implementation AS-cast is (i) efficient, for it uses partitions to lock down the traffic generated by its operations to relevant nodes, yet it (ii) guarantees that every node eventually acknowledges its partition despite concurrent operations. Our complexity analysis supported by simulations shows that AS-cast scales well in terms of generated traffic and termination time. As such, AS-cast can constitute a new building block for geo-distributed services.
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Contributor : Brice Nédelec Connect in order to contact the contributor
Submitted on : Monday, September 13, 2021 - 4:12:06 PM
Last modification on : Friday, August 5, 2022 - 2:54:52 PM


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  • HAL Id : hal-03333669, version 2


Adrien Lebre, Brice Nédelec, Alexandre van Kempen. AS-cast: Lock Down the Traffic of Decentralized Content Indexing at the Edge. [Research Report] RR-9418, Inria Rennes. 2021, pp.1-21. ⟨hal-03333669v2⟩



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