Alibaba Group Holding Limited
Data transmission method and apparatus

Abstract:

A method including receiving, by a first device, a request message from a second device regularly, wherein the request message carries a timestamp corresponding to the request message currently received; determining, by the first device, whether the value of the timestamp is less than a preset threshold; and synchronizing, by the first device according to a corresponding relationship between timestamps and fragmented data locally cached by the first device, the fragmented data corresponding to the timestamp to the second device when the value of the timestamp is less than the preset threshold, wherein the fragmented data is obtained by fragmenting the full amount of data recorded by the first device. The present disclosure solves the technical problem of frequent failure during full-amount data updating between systems.