The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 2014
Filed:
Jul. 16, 2012
Eric Russell Fredricksen, San Francisco, CA (US);
Hanping Feng, Mountain View, CA (US);
Naga Sridhar Kataru, French Camp, CA (US);
Georges Harik, Mountain View, CA (US);
Eric Russell Fredricksen, San Francisco, CA (US);
Hanping Feng, Mountain View, CA (US);
Naga Sridhar Kataru, French Camp, CA (US);
Georges Harik, Mountain View, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
The present invention is directed to a method for updating a cache. A server identifies whether certain preconditions have been met for a document in a cache from freshness parameters associated with a document identifier for the document. Then when the preconditions have been met, a first document content is retrieved from a remote host. A first content fingerprint for the first document content is calculated. The first document content is stored in the cache. Then a content difference is calculated between the first document content and a second document content, both associated with the document identifier. The content difference is stored. Then the document identifier is associated with the content difference.