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:
Mar. 25, 2008
Filed:
Aug. 04, 1999
Martin F. Arlitt, Palo Alto, CA (US);
John A. Dilley, Los Altos, CA (US);
Richard J. Friedrich, San Jose, CA (US);
Tai Y. Jin, San Mateo, CA (US);
Stephane J Perret, Grenoble, FR;
Martin F. Arlitt, Palo Alto, CA (US);
John A. Dilley, Los Altos, CA (US);
Richard J. Friedrich, San Jose, CA (US);
Tai Y. Jin, San Mateo, CA (US);
Stephane J Perret, Grenoble, FR;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A data access network system is described that includes a content server coupled to a plurality of proxy servers via an interconnect network. The content server store at least one content file. The data access network system also includes a system of maintaining content consistency between the content server and the proxy servers. The system includes a subscription manager in the content server that specifies all of the proxy servers that are subscribed to the content file. The system also includes a consistency manager that notifies all of the subscribed proxy servers that cache the content file to discard the cached content file from those proxy servers when the content file is updated in the content server. A method of maintaining content consistency between the content server and the proxy servers is also described.