Distributed Data Storage Method, Apparatus, and System

摘要

A distributed data storage method, apparatus, and system are disclosed. After a first node receives a query request that comprises a query identifier, if first data corresponding to the query identifier is stored locally, but second data corresponding to the query identifier is not stored locally, the first node recalculates a second node configured to store the first data, and sends storage location information of the first data to the second node. The second node obtains the first data from the first node according to the storage location information after receiving a request for querying for the first data, and if the request for querying for the first data is not received subsequently, the operation of obtaining, by the second node, the first data from the first node is not triggered. In this way, network data transmission resources are reduced and storage space is saved.

主权项

1. A distributed data storage method, wherein a distributed system comprises a service apparatus and a plurality of nodes, wherein the nodes are used for distributed data storage, wherein the service apparatus is configured to access data stored on the nodes, and wherein the method comprises:
receiving, by a first node, a first query request sent by the service apparatus, wherein the first query request comprises a query identifier, and wherein the query identifier corresponds to first data and second data; obtaining, by the first node according to the query identifier and a preset calculation rule, a second node configured to store the first data when the first node stores the first data and does not store the second data; and sending, by the first node, storage location information of the first data to the second node.