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| ¡ö Content Delivery
Solution |
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| Why Content Delivery
Network? |
| CDN brings
order and quality of service
(QoS) to the Internet's IP backbone
to eliminate or minimize the
infamous "World Wide Wait"
phenomenon. Slight network delays
or somewhat inconsistent response
times go almost unnoticed when
the Internet application at
hand is text-based email or
a static Web page download.
In multimedia world of entertainment
services, gaming, live video-conferences
and streaming broadcasts, which
are sensitive to response-time
delays, though, extra steps
must be taken to ensure delivery
of a quality experience.
CDNs address
these stringent response-time
demands in large part by minimizing
the number of Internet backbone
delivery that a request and
resulting stream or downloadable
content must traverse. One
way they do this is by hosting
replicas of a developer's
content in cache servers called
surrogates that are located
within network edge points
of presence (POPs). The setup
enables CDN service providers,
in many cases, to deliver
content stored in cache servers
just one hop away from the
user. Hence, it significantly
reduces the bandwidth consumption,
user latency and increases
content delivery performance.
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| SinoCDN's Content
Networking Solution |
| Content Networking
Solution by SinoCDN |
| SinoCDN's
Content Delivery Network solution
takes the Internet to the next
level by allowing all organizations
to maximize the impact of communicating
via the Web by overcoming the
modern day bandwidth issues
of delivering rich-media. SinoCDN's
Content Delivery Networking
Solution guarantees that web
content, rich audio, quality
video and other high bandwidth
files can be delivered with
speed, accuracy and consistency,
thus dramatically increasing
the impact of your communication
programs. Customers can experience
an immediate improvement on
the performance, reliability
and quality of media streams.
The Content
Networking Solution of SinoCDN
consists of 5 components:
Content Management
This is an application level
service providing management
features for the media content
administrators to manage their
content delivery. Content
providers need a user-friendly
tool to manage and automatically
publish their content on the
network. This component allows
content administrators to
manage and monitor the content
distribution on the network
seamlessly. Administrators
can broadcast live stream,
publish on-demand content,
perform content replication,
set the content delivering
algorithm and broadcasting
schedule, etc. through the
management tool.
Network Management
Network management is critical
to distributed network architectures.
It is responsible for managing,
real-time monitoring and configuring
the whole CDN. Network administrators
use the one-piece, easy-to-use
web based management tools
to administrate and monitor
the whole CDN and individual
network devices(e.g. ISG).
Network Management allows
management of bandwidth, configuration
of network settings, measurement
of performance and usage,
etc. This component provides
centralilzed provisioning
and policy setting for all
content edge delivery nodes
associated within the CDN.
Content Routing
Since more and more users
access media content on the
Internet, it becomes more
difficult to provide high-quality
service from a single location.
A method providing service
to the end users with the
best site response is necessary
to handle the heavy traffic.
"Content Routing"
is the solution to this problem.
It ensures that a user is
matched and served with the
optimal routing path which
is formed based on a set of
metrics such as latency, server/network
loading and topology, enabling
accelerated content delivery
and adpative routing around
failure and congestion. Thus,
users experience much better
in content response, stream
quality and content availability.
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| ActiveRoute
technology is a communicaton protocol
between ISGs in the CDN. ISGs tell
each other their current status (e.g.
loading and network status) and available
content URLs. The content is then
routed from the nearest and best node.
Moreover, since the ISGs have the
information of neighboring nodes'
status, they can intelligently perform
load-balancing by getting content
from the best (with most available
resource) ISG. Thus, a distributed
ISG network with ActiveRoute technology
enables intelligent content-aware
routing and load-balancing feature.
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| Request
Routing Intelligent request
routing technology by MediaDNS,
one of SinoCDN's networking products,
is used for searching the nearest
ISG or server node to the client
for performing Global Server Load-Balancing
(GSLB) and Local Server Load-Balancing
(LSLB). When a user enters the URL
of the requesting content, the request
is directed to the best and closest
ISG or server node by MediaDNS.
This redirection can be done using
the method of DNS lookup or application
level redirect, thus allowing the
client to get the content from the
best and nearest node based on network/server
loading, geographical location and
topology.
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| Application
Service In order to establish
a distributed content network for pushing
content or services on the edge, application
servers like caches, proxies, replicas,
splitters and transaction servers, etc.
have to be distributed over the network
for performing content delivery and distribution.
SinoCDN's Content Networking Solution
provides this fundamental function by
deploying ISGs or third parties' application
servers. Since users' requests are satisfied
by the relatively best-performaning servers,
and content/service distribution is carried
out on the last mile of the network,
bandwidth consumption on the WAN is significantly
saved with optimal delivery quality achieved.
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More
on Content Delivery Network:
¨ˆ A Comprehensive
Content Distribution and Management Solution
For High-Quality Multimedia Delivery
¨ˆ CDN Manager Data
Sheet
¨ˆ Media DNS Data Sheet
¨ˆ ISG Data Sheet
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