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:
Jul. 29, 2003
Filed:
Jun. 25, 1999
Anil Gurijala, Dallas, TX (US);
Basudeb Dash, Plano, TX (US);
Nortel Networks Limited, St. Laurent, CA;
Abstract
An object caching system ( ) serving an Intranet ( ) includes a cache name server ( ) and a plurality of web cache servers ( A- D). Each of the plurality of web cache servers ( A- D) couples to an Intranet ( ) and to the Internet ( ) and stores a respective plurality of Internet objects that have been previously retrieved from the Internet ( ). The cache name server ( ) couples to the Intranet ( ), receives a request for an Internet object from a web client ( A) coupled to the Intranet ( ), and directs the web client ( A) to a serving web cache server ( A) of the plurality of web cache servers ( A- D) based upon the request. If the serving web cache server ( A) possesses a copy of the Internet object, it returns a copy of the Internet object to the web client ( A). However, if the serving web cache ( A) server does not possess a copy of the Internet object, it retrieves a copy of the Internet object from the Internet ( ) and returns a copy of the Internet object to the web client ( A). The cache name server ( ) includes a database that stores an identifier and a serving web cache server ID for each Internet object stored by the plurality of web cache servers ( A- D). The cache name server database may also store a time stamp for each Internet object. Each web cache server ( A- D) also includes a database that stores Internet objects and respective time stamps.