Multi-level cache architecture and cache management method for peer-to-peer name resolution protocol
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United States of America Patent
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Jun 28, 2005
Grant Date -
Oct 16, 2003
app pub date -
Apr 15, 2002
filing date -
Apr 15, 2002
priority date (Note) -
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Abstract
A peer-to-peer cache architecture stores peer address certificates in different cache segments according to the number of IDs being stored and their relative distance in the peer name space. The cache instantiates regions of decreased range and increased granularity as additional information from close peers is learned. In a large peer cloud where the number of instantiated IDs is not known, each succeeding cache region covers one tenth of the preceding cache region. For peers with multiple IDs registered locally, the segmented cache of the present invention combines overlapping segments of the same granularity to eliminate the duplication of information that would otherwise occur. A cache tree, an instantiated segment tree, and an uninstantiated segment tree are arranged in red-black trees to simplify the search and proper placement and instantiation of information.
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