Patent ID: 6289358
Filing Date: 2001-09-11
Classification: G06F,H04L,Y10S

Abstract:
A method for providing information objects in response to requests for said information objects, the method comprising the computer-implemented steps of:maintaining at a first location a cache of information objects that are stored at one or more second locations;receiving at said first location a first request for an information object stored at one of said second locations; andresponding to said first request by performing the steps of:traversing an index structure to locate a vector of alternates for said information object, wherein said vector of alternates includes first data about a plurality of alternate versions of said information object that are stored in said cache;reading said first data from said vector of alternates;based on said first data, identifying a particular alternate version of said information object to supply in response to said first request; andsupplying said particular alternate version of said information object.