What does cdn mean?

First of all, we need to know what CDN service is. Content Distribution Network (CDN) is an advanced traffic distribution network based on the existing Internet. The network stores the content of the original source server of the website in the application servers distributed all over the country. Through the dynamic traffic distribution controller of the network, the user's request is automatically directed to the healthy and available application server closest to the user, which improves the response speed of user access and the availability of services.

Secondly, the role of CDN service in download service is reflected in many aspects:

Users download content faster.

After using CDN service, all the content to be downloaded or most of the hot content is distributed to the edge of the network, and users can download directly from the local area when downloading, thus avoiding the bottleneck of network interconnection between different network operators or the impact on download speed. At the same time, CDN service can also support various commonly used download tools, such as netants, which use multi-threads for high-speed download, thus further improving the download speed.

The content downloaded by users is more stable.

CDN network traffic allocation controller (GSLB controller) not only considers allocating users' access to the nearest place to improve the access speed, but also ensures that the allocated nodes can provide services and have sufficient bandwidth and server processing capacity to ensure more stable download of content. In addition, CDN service providers have abundant network and equipment resources, which can avoid unstable downloading caused by insufficient bandwidth resources or insufficient equipment processing capacity and meet the sudden access needs of all sizes.

Reduce the risk of website construction

After using CDN service, the website can make full use of the resources of CDN network and develop the service quickly. For example, a new game service provider can devote all his energy to the construction of the game server, and the download service of the game client can be completely completed by the CDN service provider. You can even use the WEB server provided by CDN service providers to publish game software packages, and then meet large-scale download access through CDN services. In this way, you don't have to buy a lot of servers and bandwidth to download game software packages, which can shorten the time and deal with sudden access. By reducing the fixed capital investment, the construction risk can be reduced and the service quality can be well guaranteed.

CDN: Make the download faster and more stable.

International Online www.crionline.cn

Among many Internet services, large-capacity file download service has gradually become an important Internet service. According to the downloaded content, it can be divided into multimedia content download, software patch download, game package download, virus database download and other downloads in different fields. With the continuous maturity and perfection of DRM technology in streaming media, the offline copyright protection of streaming media is more and more flexible and convenient, which greatly promotes the download demand of multimedia content, including various video and audio content. At the same time, due to the rapid development of the game industry and the increasing number of users, the download volume of game packages has also increased exponentially, which has led to the rapid growth of the demand for download services.

In the traditional construction mode, in order to ensure the download quality of users, websites have to invest a lot of money to buy basic network environment such as hardware, software and bandwidth. At the same time, an increasingly large maintenance team needs to be established. At the same time, websites often encounter embarrassing situations that the original plan can't meet the requirements because of a large number of visits to new games or movies. Even if the new construction plan is started immediately, it can't meet the needs of the rapid growth of download business and temporary sudden download. In addition, even if the website invests a lot of money to build the source station, it will never be able to solve many bottlenecks and potential unstable factors on the Internet, such as the bottleneck of interconnection bandwidth between different telecom operators. Generally speaking, the independent investment and construction of the website makes it impossible for the website to focus on content construction and website marketing, which weakens the core competitiveness of the website.

With the rapid development of the network, the concept of professional service is gradually recognized by most network operators. Only by taking the road of specialization can Internet companies truly achieve "everlasting foundation" and "flourishing day by day". The so-called professional outsourcing service is to entrust part of the information system of the website to an external service provider on the basis of the specified service level, which will manage and provide the information services required by users, simplify the management of enterprises while saving operating costs, enable enterprises to focus on their core business and ensure business quality and market development. After the Internet industry has developed to a certain extent, the process of specialized division of labor has also led to a more detailed differentiation of its internal structure, with the emergence of basic network providers, IDC and other professional service providers serving websites and netizens, as well as other types of value-added service providers. CDN (content distribution network) content distribution network service provider is an important value-added service provider to meet the needs of Internet development. For download service, using CDN service can completely solve the problem of service quality from many aspects.

First of all, we need to know what CDN service is. Content Distribution Network (CDN) is an advanced traffic distribution network based on the existing Internet. The network stores the content of the original source server of the website in the application servers distributed all over the country. Through the dynamic traffic distribution controller of the network, the user's request is automatically directed to the healthy and available application server closest to the user, which improves the response speed of user access and the availability of services.

Working principle of CDN network

Secondly, the role of CDN service in download service is reflected in many aspects:

Users download content faster.

After using CDN service, all the content to be downloaded or most of the hot content is distributed to the edge of the network, and users can download directly from the local area when downloading, thus avoiding the bottleneck of network interconnection between different network operators or the impact on download speed. At the same time, CDN service can also support various commonly used download tools, such as netants, which use multi-threads for high-speed download, thus further improving the download speed.

The content downloaded by users is more stable.

CDN network traffic allocation controller (GSLB controller) not only considers allocating users' access to the nearest place to improve the access speed, but also ensures that the allocated nodes can provide services and have sufficient bandwidth and server processing capacity to ensure more stable download of content. In addition, CDN service providers have abundant network and equipment resources, which can avoid unstable downloading caused by insufficient bandwidth resources or insufficient equipment processing capacity and meet the sudden access needs of all sizes.

Reduce the risk of website construction

After using CDN service, the website can make full use of the resources of CDN network and develop the service quickly. For example, a new game service provider can devote all his energy to the construction of the game server, and the download service of the game client can be completely completed by the CDN service provider. You can even use the WEB server provided by CDN service providers to publish game software packages, and then meet large-scale download access through CDN services. In this way, you don't have to buy a lot of servers and bandwidth to download game software packages, which can shorten the time and deal with sudden access. By reducing the fixed capital investment, the construction risk can be reduced and the service quality can be well guaranteed.

As the largest CDN service provider in China, Beijing Lanxun Communication Technology Co., Ltd. has more than 60 nodes in China, covering major domestic network operators such as China Telecom, China Netcom, China Mobile, China Unicom, China Tietong and Education Network, and its available bandwidth exceeds 40Gbps. The CDN services of ChinaCache include HTTP web service, live streaming service, on-demand streaming service and download service, which can fully meet the needs of different types of websites in different aspects. In terms of download service, there have been many successful cases, such as successfully providing virus package download for Rising and game package download for 9you.