Electrical computers and digital processing systems: multicomput – Computer-to-computer session/connection establishing – Session/connection parameter setting
Reexamination Certificate
2003-08-12
2009-06-23
Lin, Kenny S (Department: 2452)
Electrical computers and digital processing systems: multicomput
Computer-to-computer session/connection establishing
Session/connection parameter setting
C709S227000, C709S201000, C709S202000, C709S203000
Reexamination Certificate
active
07552220
ABSTRACT:
A method and computing systems for refreshing objects stored by a Proxy cache server from Web content servers. The refresh is requested by the Proxy cache server only if the expiration date attached to a stored object has expired. The refresh of one object is requested by the Proxy cache server to the Web content server upon a request from the browser of a client device. Additionally, the Proxy cache server can send a Refresh_request command to the Web content servers applying to a list of objects for which the expiration date has expired. The refreshed objects are not sent by the Web content server if the last modified date has changed but rather if, and only if, the object content, identified by a signature, has been changed. This method and system have the advantage of offloading the computing resources involved for data transfer through the network connecting the servers.
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Fielding et al. RFC 2616. Hypertext Transfer Protocol—HTTP/1.1. http://www.faqs.org/ftp/rfc/rfc2616.pdf. Sections 6.1.1, 10.5.2, 13.3.
Marmigere Gerard
Picon Joaquin
Secondo Pierre
Gundel Norman L.
Hoang Hieu T
Hoffman Warnick LLC
International Business Machines - Corporation
Lin Kenny S
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