Basic Facts Regarding The CDN Service
Content delivery network or simply CDN service is an expansive network of servers which are distributed in several geographical locations. They are found in areas that serve as data centers for the internet. This network helps the users to access information fast and with ease. Accessible content includes live streaming media, applications, web objects (URLs, scripts, texts and graphics), downloadable objects and social networks among others.
Not only does the network make it easy to access information, but also greatly helps in reducing the traffic generated by large numbers of clients trying to access particular content. The result of this is reducing running costs for the content vendor. Another important role is the protection of content from attack traffic. The network provider bills the content vendor. The provider in turn has to pay for carriers, ISPs and network operators for hosting of the servers.
Most of the available servers are owned and run by the providers. It is also possible to have what is referred to as P2P or peer-to-peer technology. Here, the servers are shared between different providers. The most popularly used software is the on-demand software (also called application service provider or ASP). Content vendors that have enough resources may choose to run their own CDNfsr.
Nodes used by the servers are usually distributed over several backbones. They are put in areas called PoPs or points of presence. This kind of set-up results a reduction in bandwidth costs, an improvement in page load times and an improvement in content availability. Security also enhanced as the servers also help in filtering out unwanted malware from the network.
Received requests are redirected in an algorithmic manner to the optimal nodes. The optimal are determined by measuring the number of network seconds between the client and the available servers. The server with the least seconds is chosen. Other than performance, cost is another determining factor. The less expensive nodes are usually chosen.
Streaming of video content causes massive traffic build up. To maintain a good quality of service broadband providers need to invest a huge amount of capital. Good quality is unfortunately quite costly to maintain and it for this reason that a number of content providers have launched their own content delivery networks. Many of them say that they have successfully reduced on the infrastructure investments required.
There is need for server load to be regulated so as to improve on performance. The techniques used to achieve this. The main ones are referred to as the hardware-based and software-based. The hardware-based is also called content switch. The two methods both work by distributing the traffic received to the available servers. Each of the switches is allocated a specific IP address to facilitate this process.
The CDN service is undoubtedly a great development in internet use. It has brought with it various benefits both to clients and to service providers. Providers are in a position to avail content closer to their clients. This has become possible due to deep catchment in the network.
Not only does the network make it easy to access information, but also greatly helps in reducing the traffic generated by large numbers of clients trying to access particular content. The result of this is reducing running costs for the content vendor. Another important role is the protection of content from attack traffic. The network provider bills the content vendor. The provider in turn has to pay for carriers, ISPs and network operators for hosting of the servers.
Most of the available servers are owned and run by the providers. It is also possible to have what is referred to as P2P or peer-to-peer technology. Here, the servers are shared between different providers. The most popularly used software is the on-demand software (also called application service provider or ASP). Content vendors that have enough resources may choose to run their own CDNfsr.
Nodes used by the servers are usually distributed over several backbones. They are put in areas called PoPs or points of presence. This kind of set-up results a reduction in bandwidth costs, an improvement in page load times and an improvement in content availability. Security also enhanced as the servers also help in filtering out unwanted malware from the network.
Received requests are redirected in an algorithmic manner to the optimal nodes. The optimal are determined by measuring the number of network seconds between the client and the available servers. The server with the least seconds is chosen. Other than performance, cost is another determining factor. The less expensive nodes are usually chosen.
Streaming of video content causes massive traffic build up. To maintain a good quality of service broadband providers need to invest a huge amount of capital. Good quality is unfortunately quite costly to maintain and it for this reason that a number of content providers have launched their own content delivery networks. Many of them say that they have successfully reduced on the infrastructure investments required.
There is need for server load to be regulated so as to improve on performance. The techniques used to achieve this. The main ones are referred to as the hardware-based and software-based. The hardware-based is also called content switch. The two methods both work by distributing the traffic received to the available servers. Each of the switches is allocated a specific IP address to facilitate this process.
The CDN service is undoubtedly a great development in internet use. It has brought with it various benefits both to clients and to service providers. Providers are in a position to avail content closer to their clients. This has become possible due to deep catchment in the network.
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