U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Inter-cache protocol for improved WEB performance

Patent 5787470 Issued on July 28, 1998. Estimated Expiration Date: Icon_subject October 18, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventors

Assignee

Application

No. 733485 filed on 10/18/1996

US Classes:

711/124, Cross-interrogating709/218, Using interconnected networks709/226, Network resource allocating709/230, COMPUTER-TO-COMPUTER PROTOCOL IMPLEMENTING709/238, COMPUTER-TO-COMPUTER DATA ROUTING711/165Internal relocation

Examiners

Primary: Swann, Tod R.
Assistant: Tzeng, Fred F.

Attorney, Agent or Firm

International Classes

G06F 012/00
200.43
200.46
200.48
200.55
200.6

Abstract

On the Internet, different caches may contain copies of objects that have been copied from originating servers when they were accessed by users. Interconnected caches may have different objects stored thereon that might at some time be requested by a client terminal that is connected to a cache other than the one on which the object is stored. Rather than awaiting a request for a particular object and then querying each neighbor cache to determine whether a copy of the requested object is stored thereon, and then downloading the requested object if it is found, information about the contents of the neighbor caches is exchanged between these caches so that when a request for an object is received, the object can be retrieved from the cache in which it is stored. In the alternative, the object may be retrieved from the originating server if, for example, the object stored in a cache is stale based on the date and time it was last modified in the cache.

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