公开(公告)号：US20080228858A1

公开(公告)日：2008-09-18

申请号：US12131029

申请日：2008-05-30

申请人： Dilip Kumar BISWAL ,  Isaac Kam-Chak Cheng ,  Cecilia Oi-Lin Chu ,  Donald Lee Clare ,  Louis S.W. Mau

发明人： Dilip Kumar BISWAL ,  Isaac Kam-Chak Cheng ,  Cecilia Oi-Lin Chu ,  Donald Lee Clare ,  Louis S.W. Mau

IPC分类号： G06F15/16

CPC分类号： G06F17/30578 ,  Y10S707/99952 ,  Y10S707/99953

摘要： A system for synchronizing data on a first device with data at a second device, includes: determining a pre-image of the data on the first device according to a filter after a previous synchronization with the data at the second device; determining a current image of the data at the second device according to the filter; determining a delta of the current image, where the delta comprises data that exists in the current image and has changed since the previous synchronization; instructing the first device to delete data that exists in the pre-image but not in the current image; and instructing the first device to UPSERT a union of the data that exists in the delta and the data that exists in the current image but not the pre-image. This is efficient in time and bandwidth resources while also providing consistent data integrity.

摘要翻译： 一种用于将第一设备上的数据与第二设备上的数据同步的系统包括：在与第二设备上的数据进行先前同步之后，根据过滤器确定第一设备上的数据的前置映像; 根据滤波器确定第二设备处的数据的当前图像; 确定当前图像的增量，其中所述增量包括存在于当前图像中并且自先前同步之后已经改变的数据; 指示第一设备删除存在于前图像中但不在当前图像中的数据; 并指示第一个设备对存在于增量中的数据和当前图像中存在的数据而不是预映像进行联合。 这在时间和带宽资源方面是有效的，同时也提供一致的数据完整性。