Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Patent
1996-10-18
1998-07-28
Swann, Tod R.
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
711165, 39520048, 39520056, 3952006, 39520068, G06F 1200
Patent
active
057874700
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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DeSimone Antonio
Shur David Hilton
Sibal Sandeep
AT&T Corp
Gurey Stephen M.
Swann Tod R.
Tzeng Fred F.
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