METHOD AND DEVICE FOR FABRICATING DIFFERENTIAL UPGRADE PACKAGE

A method and device for fabricating a differential upgrade package. The method comprises: acquiring binary data of a source version, and conducting mathematical transformation and ranking on the binary data to obtain a metadata set, wherein the metadata means attribute data of a set minimum basic unit; serializing the data in the metadata set into an intermediate file; and when it is required to fabricate the differential upgrade package, conducting a differentiation analysis on the source version and a target version according to the intermediate file, so as to build the differential upgrade package. In the embodiments of the present invention, the intermediate file is used for fabricating the differential upgrade package, thereby improving the fabrication efficiency of the differential package and shortening the fabrication time of the differential package. In addition, because a cache optimization mechanism is introduced into the embodiments of the present invention, and the processing procedure of the ste