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:
Feb. 14, 2006
Filed:
Mar. 30, 2001
Milind M. Buddhikot, Cliffwood, NJ (US);
Katherine H. Guo, Eatontown, NJ (US);
Subhash Suri, Santa Barbara, CA (US);
Youngsu Chae, Norcross, GA (US);
Milind M. Buddhikot, Cliffwood, NJ (US);
Katherine H. Guo, Eatontown, NJ (US);
Subhash Suri, Santa Barbara, CA (US);
Youngsu Chae, Norcross, GA (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A cache replacement system and method for changing the number of cached copies of segments of a media clip in response to rank change for the media clip is disclosed. Whenever rank change for a media clip is detected at an origin server, rank change information is distributed to proxy servers organized in a loosely coupled distributed cache. Each proxy server uses this information to recompute caching probabilities for segments of the media clip in order to determine which segments of the clip to store or discard, thereby forming a new cache layout for the clip at each proxy server. Segments are neither added nor deleted to build the new cache layout until client requests for segments of the clip are received at proxy servers. Upon receiving client requests, construction of the new cache layout occurs on a segment-by-segment basis by employing techniques of lazy caching and token exchange.