Abstract: Disclosed are a method and an electronic device for implementing a domain name system. The method includes: receiving, by a transition server, a request from a client, wherein the transition server has preset IP addresses; forwarding the request to an execution server and receiving a domain name resolution result returned by the execution server; and returning the domain name resolution result to the client.

Abstract: Disclosed are a method, an electronic device and a system for transmitting data. The method includes: obtaining transmission delay time of multiple data transmission paths between a cache server and a source server, wherein the transmission delay time are detected by the cache server; configuring data transmission path having the minimum transmission delay time as the shortest data transmission path between the cache server and the source server; sending configuration information of the shortest data transmission path to the cache server, so that data is transmitted between the cache server and the source server via the shortest data transmission path.

Abstract: Disclosed are an anti-hotlinking method and an electronic device. The method includes: receiving request information sent by a client for acquiring a video file; determining a video file corresponding to the request information according to the request information and encrypting the video file; and sending the encrypted video file to the client so that the client decrypts the encrypted video file and plays the decrypted video file.

Abstract: Disclosed are a method and an electronic device for content pushing. The method mainly includes: obtaining, by a client, a device identity (ID) from an authentication server, wherein the device ID is a unique device identification assigned for the client by the authentication server; adding the device ID into a request for a content; and sending the request for the content to a CDN server, so that the CDN server returns the requested content to the client after authenticating the device ID.