Point-to-point download system and resource caching method thereof

Abstract

The invention is applicable to the field of resource sharing and provides a point-to-point download system and a resource caching method thereof, wherein the method comprises the following steps: a node sends a resource-deleting request to a server when deleting cached resources; the server inquires the total number of the nodes completely storing the resources to be deleted in the point-to-point download system and returns resource-deleting instructions or resource designed block-preserving instructions to the nodes according to the relation between the total number of the nodes completely storing the resources to be deleted and a preset threshold value; and the node deletes the resources completely or preserves the resource designed blocks and deletes the other blocks of the resources according to the instructions returned by the server. Before the node deletes the cached resources, the invention determines whether completely deleting the resources or preserving a part of the resources according to the caching situation of the resources, thus ensuring the total amount of the resources in the point-to-point system and resource sharing, and providing guarantee for realizing resource sharing among all nodes by point-to-point.

Description

technical field [0001] The invention belongs to the field of data processing, and in particular relates to a point-to-point downloading system and a resource caching method thereof. Background technique [0002] Peer-to-Peer (P2P) technology is simply an Internet technology that directly connects user nodes to other user nodes, allowing each user node to interact directly through the Internet. Its biggest advantage is that it can improve the network utilization of network users. [0003] The peer-to-peer download system is a system that uses P2P technology to realize resource sharing between nodes. Nodes joining the system follow the rules stipulated by the system to download and distribute data, so as to achieve effective management and sharing of resources. [0004] figure 1 The system architecture of the existing peer-to-peer downloading system is shown, and the existing peer-to-peer system generally includes a P2P server, a resource server and a P2P node. The P2P ser...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a resource caching method in a peer-to-peer download system, aiming to solve the problem that in the existing peer-to-peer download system, when a node deletes a cached resource, the resource is completely deleted, thereby reducing the total amount of resources

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