HEARTBEAT-BASED DATA SYNCHRONIZATION DEVICE, METHOD, AND DISTRIBUTED STORAGE SYSTEM

摘要

The invention relates to the field of the data synchronization technology, and specifically, to a heartbeat-based data synchronization method. The method is used in a distributed storage system storing at least one data block set and comprising a plurality of storage apparatuses. One of the plurality of storage apparatuses is a master apparatus configured to store the data block set, and the remaining apparatus is a slave apparatus configured to store the data block set. The master apparatus executes the method comprising the steps of: obtaining access status information of the data block set, determining according to the access status information of the data block set a heartbeat time of the data block set, and transmitting, according to the heartbeat time of the data block set and to the slave apparatus, a synchronization command used to instruct the slave apparatus to perform data synchronization. The embodiment achieves the goals of reducing a system overhead of the distributed storage system and increasing read and write performance in the storage system.