Alibaba Group Holding Limited
Method and device for data version comparison between trans-time zone sites

Abstract:

Techniques for providing data version comparison between trans-time zone sites. One example method includes target data and a corresponding time stamp is received from each trans-time zone site. Each of the time stamps are based on a respective time zone of a sending trans-time zone site from which the target data and the time stamp were received. Each of the received time stamps are modified based on the respective time zone of the sending trans-time zone site for the time stamp and a time zone of the central server. The received target data is compared from each of the trans-time zone sites to stored target data based on the modified corresponding time stamp. A latest version of the target data is stored by the central server having a modified corresponding time stamp that is greater than each of the other modified corresponding time stamps.