Data distribution method, data distribution system and relevant devices in edge network

A data distribution system, comprising:

• a request route server, configured to:
• obtain a data download request from a client in an edge network, wherein the data download request carries a content ID of data to be downloaded by the client under a protocol, search for an edge network content ID corresponding to the content ID under the protocol and at least one additional content ID under other protocol, obtain corresponding client information by using the edge network content ID as an index, and return data source information that carries the client information to the client, send the edge network content ID returned by a download proxy server and the data source information that carries proxy server information to the client, and save a mapping between the edge network content ID and the content ID;
• wherein the edge network content ID is used to identify data contents already available;
• and
• a download proxy server configured to:
• download the data according to a notification from the request route server, and return the edge network content ID;
• determine whether data being downloaded currently is already stored, and if the data being downloaded is already stored, stop downloading the data, and send the edge network content ID of the data to the request route server;
• and
• download a part of file data according to preset rules, calculate out a temporary content ID of an edge network, and search temporary content IDs of the edge network already stored by the download proxy server, calculate check data of the data corresponding to the matching temporary content ID of the edge network specific to a current download protocol for a matching temporary content ID of the edge network, and determine that the proxy server already stores the data being downloaded currently if the check data is the same as check data of the data being downloaded currently.

A download proxy server, comprising:

• a connection managing unit configured to perform data interaction with an external device;
• a client interaction managing unit configured to perform data interaction with a client through the connection managing unit;
• a request route server interaction managing unit configured to perform data interaction with a request route server through the connection managing unit, obtain a data download notification from the request route server, send the data download notification to a download proxy unit, receive an edge network content ID returned by the download proxy unit, and send the edge network content ID to the request route server, wherein the edge network content ID corresponds to the content ID and at least one additional content ID and the edge network content ID is used to identify data contents already available inside the edge network;
• a download proxy unit configured to download data according to the download notification, and calculate the edge network content ID;
• and to download a part of the data according to preset rules, calculate a temporary content ID of an edge network, and send it to the storing unit, and stop downloading the data if the storing unit determines that the data being downloaded currently is already stored;
• a storing unit configured to store and manage data content, comprising the edge network content ID and the data corresponding to the edge network content ID and to determine whether the data being downloaded currently is already stored according to the temporary content ID of the edge network calculated out by the download proxy unit, notify the download proxy unit if the data being downloaded currently is already stored, save the temporary content ID of the edge network and a mapping between the temporary content ID of the edge network and the data being downloaded currently if the data being downloaded currently is not already stored;
• and
• the request route server interaction managing unit is further configured to obtain and send the edge network content ID of the data stored in the storing unit if the storing unit determines that the data being downloaded currently is already stored, and obtain and send the temporary content ID of the edge network generated by the download proxy unit if the storing unit determines that the data being downloaded currently is not already stored.