A CDN-based data distribution method

Abstract

The invention proposes a CDN-based data distribution method, aiming at reducing the waste of bandwidth resources for data distribution and reducing the distribution delay of data distribution. The implementation steps are: constructing an initial publish and subscribe network N; DDS publisher nodes obtain data transmission The topology information of the network M; the DDS publisher node constructs the data forwarding tree T' based on the multicast tree construction algorithm; the communication node selects the CDN cache node and constructs the publishing redirection network N'; the DDS publisher node issues the flow table to the OpenFlow switch; User data transfer. In the present invention, the communication architecture in which all subscribers subscribe to one publisher is transformed into the communication architecture in which all subscribers subscribe to multiple publishers in an orderly manner, thereby realizing the construction of the CDN acceleration network based on the data distribution service, which is consistent with the prior art. It realizes the load balancing of the bandwidth of data distribution, reduces the waste of bandwidth resources for data distribution, and shortens the distribution delay of data distribution.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a CDN-based data distribution method, which can be used to realize more efficient data distribution. Background technique [0002] Data distribution is mainly used to build a one-to-many communication architecture to realize a one-to-many active data transmission process. It is generally built in video conferences, multi-party voice intercom, unified command operations and other multi-party communication application scenarios , usually data distribution has high requirements on the reliability and delay of the communication architecture. [0003] Content distribution network CDN is usually used to accelerate the process of data transmission when Internet users visit websites. By setting up CDN forwarding nodes and building data acceleration networks, website content can be accelerated. [0004] The current data distribution method is mainly based on the dat...

AI Technical Summary

Problems solved by technology

In recent years, with the complication of the communication environment, the requirements for the quality of service that the data distribution method can provide and the distribution delay of data distribution are getting higher and higher. For example, the application publication number is CN110602188A, and the name is "Data The patent application of "distribution method" discloses "data distribution method based on DDS middleware". Data distribution can be applied to more complex communication environments, but its shortcomings are: the delay in the data transmission process is not optimized, and when there are many communication nodes and the transmitted user data is large, relatively large Distribution delay and a lot of waste of network bandwidth resources

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