CDN Content Delivery Network

Nama: Woody Allen
Email: marketing@exabytes.com.my
Website: http://www.exabytes.com.my
Tajuk: CDN Content Delivery Network
Iklan: CDN Content Delivery Network

A Content Delivery Network or <a href="http://exabytes.com/">CDN</a> (CDN) 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. A client accesses a copy of the data near to the client, as opposed to all clients accessing the same central server, so as to avoid bottleneck near that server.

Content types include web objects, downloadable objects (media files, software, documents), applications, real time media streams, and other components of internet delivery (DNS, routes, and database queries).

The capacity sum of strategically placed CDN edge servers can be higher than the network backbone capacity. This can result in an impressive increase in the number of concurrent users. For instance, when there is a 10 Gbit/s network backbone and 100 Gbit/s central server capacity, only 10 Gbit/s can be delivered. But when 10 servers are moved to 10 CDN edge locations, total capacity can be 10¡Á10 Gbit/s.

Strategically placed <a href="http://exabytes.com/">CDN</a> edge servers decrease the load on interconnects, public peers, private peers and backbones, freeing up capacity and lowering delivery costs. It uses the same principle as above. Instead of loading all traffic on a backbone or peer link, a CDN can offload these by redirecting traffic to edge servers.

CDNs 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 of these parameters, CDNs traditionally place servers as close to the edge networks that users are on as possible. Theoretically 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 ¨C 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.

CDNs can dynamically distribute assets to strategically placed redundant core, fallback and edge servers. CDNs 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 content source server after it has been plugged into the CDN, because the connections of end-users are now served by the CDN edges instead of the content source.

* Step 1 : Setup <a href="http://exabytes.com/">CDN</a> Hostname & Operator
o Host Operator -- Leave it by default
o CDN Hostname -- This is the URL in fully qualified form without the prefix (https://, http://, etc), of the CDN server.
o Origin -- Originating server where your sites are loaded

* Step 2 : Content Restriction & Protection (apply if needed)
o Contains restricted content?
o Blocked Countries
o Blocked IP Addresses
o Hotlinking Protection
o File extensions to protect

* Step 3 : Set Error 403 URL (apply if needed)

* Step 4 : Add CDN Site
o Resource Validation ¨C A CNAME record will be given. May point your CDN Hostname to the CNAME record.
o Click Click here to enable CDN on your site.

Sourced : http://exabytes.com.my
Ip Pengirim: 180.75.75.131