Importance

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Abstract

In response to a content request issued from a client to a Web server, a registration section in a current content storage section searches a current content storage list by using the client information of the request source as a key. If the client information of the request source is not registered, the registration section registers a set of the client. information and the content name indicated by the request in the current content storage list. If the client information is registered, the registration section performs registration processing to replace the content name combined with the client information in the current content storage list with the content name indicated by the request. A content search section searches the content storage section for the content requested by the content request. This content is returned to the request source after specific header information indicating that the content is not to be cached is added to the content by a header adding section. With this operation, the current display content information on the client can be retained and managed on the Web server side.

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First Claim