Background Introduction:
Involving in the network video domain has a important concept ¡°Streaming media ". The so-called Streaming media is refers to the video, the sound and the data from the source end at the same time to the destination transmission, and they are received continuously in the destination. Streaming data to be possible to receive and to demonstrate or play backing after the server terminal transmission by the subscriber¡¯s premises application. Generally, the user terminal application receives the enough data and the memory then immediately demonstrates after the buffer the video, or playbacks the audio.
Streaming media has an important characteristic is to the time sensitivity. This is to be needed of timeliness and high application. Its realization mainly is decided by the network band width and the compression algorithm enhancement The network video that moment which is born in China gets up, is doomed ¡°the riches and honor life¡±, to equipment and bandwidth quality demand by far high other domain application.

The Challenges are faced:
At present the domestic most network video website all use the central management pattern, just the server aggregated is entrusted with in a data central, and provides the unification to all terminal users the service and the management. But from the network video application view, the selection and broadcast service of video has accounted for 80%.Along with user¡¯s increasing and visiting quantity enlargement, we face with following questions:

1. The selection and broadcast enlarge server load and can consume the huge band width resources. In order to alleviate the pressure which the content centralism laying aside brings, the runner will invest the massive hardware and the bandwidth resources cost , but it is still unable to solve the basic problem.
2. The user community distributes widely and the network video has the very high request to the entire network transmission link. Existing network skeleton and China internet complexity is unable to guarantee the high quality network service when the terminal user visit source website.
3. The outstanding video work brings the advertisement effect, at the same time sharp-edged current capacity question urgently needing solution.
4. The network security question is not allowed to neglect. Once the video website suffering the attack, under the central management way can affect the overall situation user¡¯s visit.

Dnion CDN Solution¡ª¡ªStreaming Media selection and broadcast Acceleration

Streaming media acceleration service is put the massive streaming media content in the source website (video, sound and data and so on) to transmit through the good link to the streaming media special-purpose storage device of Dnion. And through coordination performance which DnionCDN network itself has, to distribute the special-purpose streaming media visit servers which are located in each place of the CDN small network. These servers are located various provinces and cities main operation business node. Intelligent network assignment technology in DnionCDN network will lead terminal user for website request direction response to the best streaming media service node. Through these streaming media service node, provide the stable reliable streaming media service to the user. This plan also is suitable to the online content video and music, distance learning, online training and so on.

The effect of using:
The effect of using Dnion CDN Streaming Media acceleration in the network video domain application:

Optimize and conform the Internet resources for the network video website, reducing the source station visit pressure, and improved the malpractice which the central management service station produces.

Good transmission link and user¡¯s nearby visit have guaranteed the need of terminal user to high quality network service of the video service and win the trust of the video user community. Thus brings more current capacities for the website and the higher advertisement effect

Satisfies the good expansion of network video content. Whenever where all provides the terminal user high quality visit, and solves the question which arise suddenly the current capacity

Prevents the hacker attack effectively, also prevention simple point breakdown. Does not affect the overall situation visit.