Content caching device for managing contents based on content usage features

摘要

The present invention relate to a content caching device, and more particularly, to such a content caching device in which the priority of a content requested by a user terminal is calculated based on content usage features such as the number of requests or the latest request interval of the requested content, and the like, the requested content is controlled to be selectively stored in a short-term storage unit based on the calculated priority of the requested content, and among the contents stored in the short-term storage unit, a content needed to be stored for a long time period is controlled to be stored in a separate long-term storage unit based on the storage time of the requested content in the short-term storage unit.

主权项

1. A content caching device, comprising: a request service unit configured to receive a content request message from a user terminal; a content storage unit configured to store contents, and including a short-term storage unit and a long-term storage unit; and a control unit configured to calculate a priority value of the requested content based on a number of requests or a latest request information of the requested content, control the requested content to be stored in the short-term storage unit, based on the number of requests or the latest request information of the requested content, wherein the number of requests and the latest request information are calculated based on an identifier of the requested content, which is included in the content request message and a received time of the content request message, and control the requested content to be transferred to the long-term storage unit from the short-term storage unit so that the requested content is stored in the long-term storage unit, based on a storing time period of the requested content in the short-term storage unit. Wherein the priority value (Pi) of the requested content (i) is calculated by the following Equation 1:Pi=w·ni+(1-w)·kiprev-icur[Equation⁢⁢1] Wherein ni is the number of requests of the requested content (i), w is an adjustment weight for the number of requests and a latest request interval of the requested content, k is a constant for adjustment of the latest request interval, and iprev and icur are a received time of a previous content request message requesting the requested content and a received time of a current content request message requesting the requested content, respectively.