United States Patent 8,250,211 Swildens , et al. August 21, 2012 Automatic migration of data via a distributed computer network
Abstract A method and apparatus for the automatic migration of data via a distributed computer network allows a customer to select content files that are to be transferred to a group of edge servers. Origin sites store all of a customer's available content files. An edge server maintains a dynamic number of popular files in its memory for the customer. The files are ranked from most popular to least popular and when a file has been requested from an edge server a sufficient number of times to become more popular than the lowest popular stored file, the file is obtained from an origin site. The edge servers are grouped into two service levels: regional and global. The customer is charged a higher fee to store its popular files on the global edge servers compared to a regional set of edge servers because of greater coverage.
Inventors: Swildens; Eric Sven-Johan (Mountain View, CA), Cinquini; Maurice (San Jose, CA), Chavarkar; Amol D. (San Mateo, CA), Agarwal; Anshu (San Jose, CA) Assignee: Akamai Technologies, Inc. (Cambridge, MA) Appl. No.: 13/088,466 Filed: April 18, 2011 Related U.S. Patent Documents