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. 27, 2010
Filed:
Aug. 06, 2007
Andrew T. Davis, San Francisco, CA (US);
Jay G. Parikh, Redwood City, CA (US);
Srikanth Thirumalai, West Newton, MA (US);
William E. Weihl, San Francisco, CA (US);
Mark Tsimelzon, Sunnyvale, CA (US);
Andrew T. Davis, San Francisco, CA (US);
Jay G. Parikh, Redwood City, CA (US);
Srikanth Thirumalai, West Newton, MA (US);
William E. Weihl, San Francisco, CA (US);
Mark Tsimelzon, Sunnyvale, CA (US);
Akamai Technologies, Inc., Cambridge, MA (US);
Abstract
Business applications running on a content delivery network (CDN) having a distributed application framework can create, access and modify state for each client. Over time, a single client may desire to access a given application on different CDN edge servers within the same region and even across different regions. Each time, the application may need to access the latest 'state' of the client even if the state was last modified by an application on a different server. A difficulty arises when a process or a machine that last modified the state dies or is temporarily or permanently unavailable. The present invention provides techniques for migrating session state data across CDN servers in a manner transparent to the user. A distributed application thus can access a latest 'state' of a client even if the state was last modified by an application instance executing on a different CDN server, including a nearby (in-region) or a remote (out-of-region) server.