Distributed Web caching with incremental update

This paper proposes a peer-distributed Web caching scheme with incremental update and delivery. In the scheme, each computer (client) within a physical cluster is assigned an additional Web caching function. The server generates patches whenever there are updates of Web objects by coding the differences between the stale and the fresh Web objects. The protocol allows a client requesting an updated object to retrieve the patch from the original server and the patchable stale file from its local or peer cache storage. The stale file together with the patch then regenerates the fresh file for the client.