Mail indexing and searching using hierarchical caches
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United States of America Patent
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Nov 29, 2016
Grant Date -
Mar 27, 2014
app pub date -
Sep 17, 2013
filing date -
Sep 17, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Electronic mail message processing includes: obtaining a set of keywords associated with an electronic mail message; updating, based at least in part on the set of keywords, a set of inverted index records stored in a level 1 cache; determining whether size of the set of inverted index records stored in the level 1 cache exceeds a first preset threshold value; in the event that the first preset threshold value is exceeded, transferring the set of inverted index records in the level 1 cache to a level 2 cache; determining whether size of a level 2 cache file exceeds a second preset threshold value; in the event that the second preset threshold value is exceeded, transferring, according to a path file, inverted index records in the level 2 cache file to a level 3 cache storing a set of inverted index files.
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