A Tabu-Based Cache to Improve Range Queries on Prefix Trees

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Provided by: INRIA
Topic: Storage
Format: PDF
Distributed Hash Tables (DHTs) provide the substrate to build large scale distributed applications over peer-to-peer networks. A major limitation of DHTs is that they only support exact-match queries. In order to offer range queries over a DHT it is necessary to build additional indexing structures. Prefix-based indexes, such as Prefix Hash Tree (PHT), are interesting approaches for building distributed indexes on top of DHTs. Nevertheless, the lookup operation of these indexes usually generates a high amount of unnecessary traffic overhead which degrades system performance by increasing response time.
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