Reverse proxy system and method thereof

Abstract

Disclosed are a reverse proxy system and a method thereof. The system includes a front guide device and a proxy server group. The front guide device receives request information and performs distribution forwarding through a mechanism. The proxy server group includes a plurality of proxy servers. The request information is forwarded to one proxy server in the plurality of proxy servers. Each proxy server includes a cache unit and a receiving unit, wherein after the receiving unit receives the request information, the storage position of a file requested by the request information is obtained through calculation so that the file is taken from the storage position and transmitted to a user device. Through a mechanism in which files stored by the cache units of the proxy servers can be shared by the receiving units of the proxy servers, the reverse proxy system and the method thereof are capable of preventing storing the same file repeatedly so that the caching hit rate is improved and also capable of deploying the proxy servers flexibly so that horizontal expansion is facilitated.

Description

technical field [0001] The invention relates to a reverse proxy technology, in particular to a reverse proxy system and proxy method applied to internet video / audio. Background technique [0002] With the vigorous development of the network and the maturity of IP traffic (IP traffic) technology, and in order to cope with the continuous increase of network audio and video, network service providers often build a large number of reverse proxy servers (Reverse Proxy, hereinafter referred to as servers) to reduce bandwidth consumption; in addition, network service providers are also committed to network audio-visual value-added applications to serve users. In recent years, network service providers have adopted HTTP-based adaptive bit-rate streaming technology to provide videos, compressing videos into multiple bit rates ( bitrate) and slice, so as to give appropriate segments according to the user's viewing progress and available bandwidth. However, such a technology tends to i...

AI Technical Summary

Problems solved by technology

[0004] At Figure 1B Among them, the proxy server cluster 6 includes proxy servers 61, 62, 63, and this number is also only for illustration. Each proxy server 61, 62, 63 can be used to process request content, and can store video files A1, A2, A3, etc. Similarly, the proxy servers 61, 62, and 63 still operate independently. This mechanism is to use the (seventh layer) load balancer 7 to replace the work distribution of the round-robin DNS server. The load balancer 7 can identify the content of user requests , and hand over the same request content to the same proxy server for processing, in other words, the same movie content only needs to be stored once, for example, when the user 70 makes a request, it will be served by the first proxy server 61 after being distributed by the load balancer 7, Similarly, if the first proxy server 61 has stored the desired film, then the first proxy server 61 provides the film, if the film is not stored, then the original station server 8 is obtained and stored in the first proxy server 61, and then , after the requests made by users 71 and 72 are judged by the load balancer 7, if they are the same as the request of user 70, then the first proxy server 61 will also provide proxy services, so that the entire cache hit rate can be effectively improved, but this proxy mechanism When the device is expanded, it will be limited by the upper limit of the service capacity that the load balancer 7 can provide, and not only the problem of single point of failure (Single Point of Failure), but also the high price of the load balancer 7, all make this proxy mechanism equipment Extensions are subject to many limitations

[0005] In addition, the existing reverse proxy technology cannot directly and effectively process videos with a high number of access times. As a result, if the videos are stored on a specific proxy server, it is easy to cause the problem of overloading the specific proxy server

[0006] Therefore, how to find a better reverse proxy technology for network audio and video, especially without changing the structure of the current proxy mechanism, propose a new reverse proxy mechanism, and at the same time avoid the lack of existing proxy mechanisms, such as fast The hit rate problem, the waste of storage space caused by repeated storage of files, the limitation of the load balancer on the expansion of proxy servers, and even the processing methods for files with high access times (such as popular content videos) are really urgent issues at present. Technical issues to be solved

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