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HITACHI REVIEW

Hitachi

AUTHORS

Takashi Nishikado Network SE/SI Research Dept., IP Network Research Center, Hitachi, Ltd.
Minoru Koizumi Network SE/SI Research Dept., IP Network Research Center, Hitachi, Ltd.
Hideo Oochi Cyber-Business Div., Hitachi INS Software, Inc.

OVERVIEW

As more and more people use various Web services from fixed and mobile phones, response times are slowing. Sometimes, users cannot get any response at all because of congestion in communication lines and at Web servers. A new architecture is thus needed to enable quick responses to many users even though communication lines and Web server resources are limited. Prioritized data transfer should also be considered for important users and for special data, such as the latest news and audio/video clips. Hitachi's new communication service solution uses the latest "active network" technology. New-type Web gateway servers are placed at the edge of the network to distribute the processing using cached data following the instructions supplied by Web service providers. For example, providers could instruct the gateway servers on how to prioritize data transfer by using a control tag attached to the contents. Users could then get quicker responses and services differentiated based on the characteristics of themselves and the contents.

KEYWORDS

Web, large scale, high quality, active network, cache, XML

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