METHOD AND APPARATUS FOR CACHING PROXY

摘要

The present invention relates to a proxy apparatus and a caching method thereof. The caching method of the proxy apparatus according to an embodiment of the present invention comprises the steps of: receiving a transmission request of content capable of being divided into a plurality of blocks from an external device, and indication information on a playback position of the content; if the transmission request is received, acquiring a header block including the header of the content; identifying a middle block corresponding to the playback position by using the header; if the identified middle block is not cached in the proxy device, requesting the middle block via a network; and transmitting at least a part of the header and at least a part of the middle block corresponding to the request to the external device. According to an embodiment of the present invention, an efficient caching method and system can be provided even through the size of the content is big but only a specific part is frequently used. [Reference numerals] (110) Client; (120) Original server; (200) Proxy apparatus; (251) Transmission controller; (252) Acquirement controller; (310,390) Request of content A; (320) Acquirement of content A; (330) Block 1 in content A; (340) Block 0~N in content A; (AA) Content A: block 0; (BB) Content A: block 1; (CC) Content A: block N