Multi-attribute range queries on read-only DHT

Abstract

R-DHT is a class of DHT whereby each node supports "read-only" accesses to its key-value pairs, but does not allow key-value pairs belonging to other nodes to be written on it. Recently, supporting efficient multi-attribute range queries on DHT has been an active area of research. This paper presents the design and evaluation of Midas, an approach to support multi-attribute range queries on R-DHT. Midas indexes multi-attribute resources using a d-to-one mapping scheme, and optimizes a range query by searching only for available keys. Our simulation results show that Midas on R-DHT achieves a higher lookup resiliency than conventional DHT, and it has a lower cost of query processing when the query selectivity is much larger than the number of query results. © 2006 IEEE.