Patent ID: 7251670
Filing Date: 2007-07-31
Classification: G06F,H04L,Y10S

Abstract:
1. In a first content distribution node, a method for maintaining a first catalog, the method comprising the steps of: detecting a modification condition associated with the first catalog of the first content distribution node, the modification condition identifying a potential requirement to modify the first catalog within the first content distribution node; in response to detecting the modification condition, performing a version-based comparison technique on the first catalog based on the modification condition to identify a catalog change condition, wherein the version-based comparison technique compares at least one of: wherein a gap is a logical identifier of a boundary between two entries in a catalog, and wherein each gap location has associated version information; and determining that the catalog change condition indicates a catalog modification is required to be made to the first catalog, and in response, modifying the first catalog in accordance with the catalog change condition identified by the version-based comparison technique.