DISTRIBUTED DATA-STORE SYSTEM, AND RECORD MANAGEMENT METHOD IN DISTRIBUTED DATA-STORE SYSTEM

摘要

PROBLEM TO BE SOLVED: To avoid wasting computing resources and improve response performance in a distributed data-store system which performs distributed management of information using a plurality of computers connected by a network.SOLUTION: A distributed data-store system performs distribute management of records identified by Keys in a plurality of nodes 2-1 to 2-3 connected by a network. Each of the plurality of nodes 2-1 to 2-3 has: a storage unit 50 for storing a plurality of records managed by the own node as aggregations grouped by optional key ranges; an index assignment unit 10 for assigning an index which uses keys included in a range of an aggregation to the aggregation; and a record acquisition unit 40 for, in response to a record acquisition request, acquiring a record requested in the record acquisition request from the storage unit 50 by referring to indexes of aggregations.