Patent ID: 8645433
Filing Date: 2014-02-04
Classification: H04L

Abstract:
1. A distributed data storage method, comprising: obtaining geographic location information about data; determining a storage area of the data according to the geographic location information and calculating a key value of the data; selecting a local node in the storage area according to the key value; and storing the data into the local node; calculating a Backup-Key of a certain offset according to the key value; and selecting backup nodes inside the storage area or outside the storage area according to the Backup-Key and backing up the data into the backup nodes; and before calculating a Backup-Key of a certain offset according to the key value: wherein the local node is included in a distributed network, and the distributed network is constructed based on the geographic location information about the node, wherein a home area of the node in the distributed network is determined according to the geographic location information about the node by determining an ID of the local node according to the geographic location information; wherein different areas correspond to different ID spaces.