Data allocation system, distributed access node, data allocation method and program

摘要

Realized is load distribution among a plurality of nodes that store data updated over a wide range with high frequency. A data placement system includes a plurality of nodes that store data transmitted by client nodes and a distributed access node arranged between the plurality of nodes and the client nodes. The distributed access node comprises a node area information holding unit that holds node area information associating each of the nodes with at least one piece of area information, an area specifying unit that specifies an area where the client node is located, and a node specifying unit that selects a node associated with the specified area as the storage location of data transmitted from the client node.