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. 17, 2020
Filed:
Jul. 23, 2018
At&t Intellectual Property I, L.p., Atlanta, GA (US);
Mario A. Santoro, Colts Neck, NJ (US);
Herani Brotman, Colts Neck, NJ (US);
Alan L. Glasser, Manalapan, NJ (US);
James Miros, Little Silver, NJ (US);
Oliver Spatscheck, Randolph, NJ (US);
Jacobus E. Van der Merwe, Salt Lake City, UT (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
A system includes first and second cache servers, a domain name server, and a route controller. The cache servers respond to an anycast address. The first and second cache servers respond to first and second unicast addresses respectively. The router controller determines if the first cache server is non-overloaded, overloaded, or offline. The route controller instructs the domain name server to provide the second unicast address when the status is overloaded or offline, and modifies routing of the anycast address to direct a content request sent to the anycast address to the second cache server when the status is offline. The domain name server receives a request from a requestor, and provides an anycast address to the requestor when the status of the first cache server is non-overloaded, and provides the second unicast address to the requestor when the status of the first cache server is offline or overloaded.