Content Delivery Network
CDN (a content delivery network or content distribution network) - is a system of servers containing copies of data, placed at various points in a network so as to maximize bandwidth for access to the data from clients throughout the network.
CDN BENEFITS
Web pages download speed depends how far the user is from the web
server. CDN generally deliver content
over TCP and UDP connections. TCP throughput over a network
is impacted by both latency and packet loss. In order to
reduce both parameters, CDNs traditionally
place servers as close to the edge networks that users are as
possible. The closer the content the faster the delivery, although
network distance may not be the factor that leads to best performance.
End users will likely experience less jitter, fewer network peaks and
surges, and improved stream quality - especially in remote
areas. The increased reliability allows a CDN operator to deliver HD
quality content with high Quality of Service, low costs and low network
load. Placed edge servers decrease the load on interconnects, public peers, private peers and backbones, freeing up capacity and lowering delivery costs. Instead of loading all traffic on a backbone or peer link, a CDN can offload these by redirecting traffic to edge servers.
CDN can dynamically distribute assets to strategically placed redundant core, fallback and edge servers. CDNs can have automatically sensing with instant user redirection.
CDN can have automatic server availability sensing with instant user redirection. A CDN can offer 100% availability, even with large power, network or hardware outages.
CDN technologies give more control of asset delivery and network load. They can optimize capacity per customer, provide views of real-time load and statistics, reveal which assets are popular, show active regions and report exact viewing details to the customers. These usage details are an important feature that a CDN provider must provide, since the usage logs are no longer available at the contest source server after it has been plugged into CDN, because the connections of end-users are now served by CDN edges instead of the content source.
POP LIST
EU:US:
