Data access method, system and device based on CDN

Abstract

The invention proposes a data access method, system and device based on a CDN. The method includes the following steps that an agent CDN node establishes a first transmission control protocol link with a source station; the agent CDN node establishes a plurality of second TCP links with a plurality of client sides respectively; the agent CDN node receives data access messages of the multiple client sides through the multiple second TCP links respectively; the agent CDN node transmits the data access messages to the source station through the first TCP link. With the data access method, system and device based on the CDN, the agent CDN node establishes the first transmission control protocol link with the source station all the time, the second TCP links are saved, and therefore when the client sides request access data from the source station, the TCP links do not need to be established any more, and the data access speed is increased. Thus, the agent CDN node completes most of work for establishing one TCP link within needed time before a user request, the time for establishing the TCP links needed by the user is shortened, and the access speed of the client sides is increased.

Description

technical field [0001] The present invention relates to the technical field of communication networks, in particular to a data access method, system and device based on a CDN (Content Delivery Network, content distribution network) network. Background technique [0002] The development of the Internet has brought great convenience to life. People can search all kinds of information from all over the world in front of a computer without leaving home, and log in to the web pages of major portal websites. Everything that happened can be seen at a glance. For the information that users want to get, they only need to enter the corresponding keywords in the search bar, and then click OK, and tens of thousands of relevant information will be displayed instantly, saving the inconvenience of books, papers and traveling. It saves time and enriches our life. [0003] As the content of webpages is becoming more and more abundant, many of them, such as search webpages, post bar webpage...

AI Technical Summary

Problems solved by technology

Disadvantages of long connection technology: these objects can be requested in parallel, but after using long connection technology, they become serial, which may affect the entire page access speed

Disadvantages of pipeline technology: This technology requires the support of the user's browser, and most browsers do not support it at present, or this function is not enabled

[0005] Moreover, neither of these two technologies reduces the time for establishing a TCP connection between the user and the source site, but reduces the cost of establishing a TCP connection shared by each object from another direction, that is, reducing the number of TCP connection establishments.

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