The edge servers will have a copy of some read-only data from the origin server. The origin server will redirect the user to an edge server based on their IP address.
An additional benefit of using edge servers is that there is reduced cost from having to send data from the origin server over a large distance. However, there is cost for paying companies like Amazon or Akamai for use of their edge servers.
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bottie
As the slide says, CDN nodes are usually deployed in multiple locations, often over multiple backbones. Benefits include reducing bandwidth costs, improving page load times, or increasing global availability of content. The number of nodes and servers making up a CDN varies, depending on the architecture.
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GG
Another reason that CDN becomes important today is that the web server providers like Amazon tends to consolidate their resource in several large data centers to reduce management cost. So the latency is influenced a lot by the data center locations. Thus CDN nodes are needed to make contents closer to users.
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Arnie
No company wants to tie up their servers delivering huge assets. Instead, they employ CDNs around the world to deliver these huge assets for them. This is possible since these assets (pictures, video) generally never change. When a user wants to download such content, it is delivered to them by a nearby CDN (based on their IP address). The geographic locality lets the content be delivered with higher bandwidth and lower latency. Furthermore, the cost to the company is lower, since they just have to pay the CDN to deliver the image for them, instead of having to pay for sending the data itself over and over and over again all over the world.
The edge servers will have a copy of some read-only data from the origin server. The origin server will redirect the user to an edge server based on their IP address.
An additional benefit of using edge servers is that there is reduced cost from having to send data from the origin server over a large distance. However, there is cost for paying companies like Amazon or Akamai for use of their edge servers.
This comment was marked helpful 0 times.
As the slide says, CDN nodes are usually deployed in multiple locations, often over multiple backbones. Benefits include reducing bandwidth costs, improving page load times, or increasing global availability of content. The number of nodes and servers making up a CDN varies, depending on the architecture.
This comment was marked helpful 0 times.
Another reason that CDN becomes important today is that the web server providers like Amazon tends to consolidate their resource in several large data centers to reduce management cost. So the latency is influenced a lot by the data center locations. Thus CDN nodes are needed to make contents closer to users.
This comment was marked helpful 0 times.
No company wants to tie up their servers delivering huge assets. Instead, they employ CDNs around the world to deliver these huge assets for them. This is possible since these assets (pictures, video) generally never change. When a user wants to download such content, it is delivered to them by a nearby CDN (based on their IP address). The geographic locality lets the content be delivered with higher bandwidth and lower latency. Furthermore, the cost to the company is lower, since they just have to pay the CDN to deliver the image for them, instead of having to pay for sending the data itself over and over and over again all over the world.
This comment was marked helpful 0 times.