Data delivery method and device based on content delivery network CDN
A content distribution network and data distribution technology, which is applied in the Internet field, can solve problems such as the inability to determine which MAN the user is in, the low positioning accuracy of the CDN server, and the long distance for users to access data, so as to achieve high access efficiency and long-distance Short and low access delay
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[0053] Example one:
[0054] figure 1 It shows the implementation process of the present invention based on the content distribution network (CDN) to distribute data, and the details are as follows:
[0055] In step S101, the network node receives the domain name resolution request sent by the user terminal, and obtains the domain name carried in the domain name resolution request.
[0056] Specifically, for example, the user terminal wants to view a picture named big.jpg under the domain name: img.csp.com, and its web page address is: htttp: / / img.csp.com / big.j pg. The node sends a domain name resolution request carrying img.csp.com.
[0057] Optionally, the network node may notify the user terminal to send the domain name resolution request to the network node during the process of applying for an IP address by the user terminal through DHCP or PPPoE.
[0058] In step S102, the network node searches for the domain name in the CDN domain name list of the network node.
[0059] Specifica...
Example Embodiment
[0065] Embodiment two:
[0066] figure 2 It shows the implementation process of the present invention based on the content distribution network (CDN) to distribute data, and the details are as follows:
[0067] In step S201, the network node receives the CDN service domain name issued by the content service provider (CSP) through the extended multi-protocol border gateway protocol (the full English name is Multiprotocol-Border Gateway Protocol, English abbreviation is MP-BGP), and generates List of CDN domain names.
[0068] Specifically, in order to avoid manual configuration of the domain name served by the CDN in the CSP on the domain name resolution server in each network node, the mapping relationship between the IP address of the CDN module and the domain name is established (manual configuration will cause a lot of work. The process is cumbersome, and after the operator’s IP data is updated, manual maintenance is required, and the corresponding maintenance workload is heavy....
Example Embodiment
[0091] Example three:
[0092] Figure 4 An interactive flow chart for users to obtain data provided by the CDN module. In the embodiment of the present invention, the network node is a metropolitan area network router with integrated CDN function, and the entire system includes a user terminal, a metropolitan area network router with integrated CDN function, and a CSP server. The specific implementation is detailed as follows:
[0093] 41. The content service provider CSP publishes the domain name img.csp.com served by the CDN to the metropolitan area network router through the extended multi-protocol border gateway protocol MP-BGP.
[0094] Specifically, the CSP needs to publish the content big.jpg on the CSP server through the CDN system of the ISP, and the CSP server has been connected to the backbone network of the ISP. The user terminal accessing the content is in a metropolitan area network of the ISP, and the user terminal needs to pass through the metropolitan area network ...
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