Data synchronization method and device

The invention provides a data synchronization method and device, applied to a first data service module, the method comprising: receiving a first request from a second service module, the first request being used for requesting to synchronize service data of a first service module; obtaining service data of the first service module; and sending the service data of the first service module to the second service module. In the scheme provided by the invention, the first service module is replaced by the first data service module, and the service data of the first service module is synchronized for the second service module, so that the negative influence of the data synchronization process on the first service module can be avoided or reduced, and the performance of the first service module is ensured. 本申请提供一种数据同步方法及装置，应用于第一数据服务模块，所述方法包括：接收来自第二业务模块的第一请求，所述第一请求用于请求同步第一业务模块的业务数据；获取所述第一业务模块的业务数据；向所述第二业务模块发送所述第一业务模块的业务数据。本申请提供的方案中，通过第一数据服务模块代替所述第一业务模块，为所述第二业务模块同步所述第一业务模块的业务数据，能够避免或降低数据同步过程对所述第一业务模块的负面影响，保证所述第一业务模块的