Data synchronization method based on high speed, high stability and breakpoint resume of HTTP protocol

The invention provides a high-speed, high-stability and breakpoint resume data synchronization method based on an HTTP protocol. The method mainly comprises a central system data synchronization module and a child node data synchronization module. A data entry management module of the central system is used for processing the updated service data, and after processing and storage the service data,calling a data updating notification module of the central system; the notification module sends a notification to the data updating monitoring module of the child node through the message queue link; the data update monitoring module calls the data synchronization request module of the child node to initiate a request to the synchronization data downloading module of the central system, acquiring requested version data, circularly processing the request until the maximum version number of the service data of the child node is consistent with the maximum version number of the central system,stopping data synchronizat