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Request-Routing techniques are commonly used in Content Networks
(also known as Content Delivery Networks) [8 ...
... Routing techniques are commonly used in Content Networks
(also known as Content Delivery Networks) [8]. Content Networks
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... (also known as Content Delivery Networks) [8]. Content Networks
include network infrastructure that exists in layers 4 through 7.
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... 8]. Content Networks
include network infrastructure that exists in layers 4 through 7.
Content Networks deal with the routing ...
... include network infrastructure that exists in layers 4 through 7.
Content Networks deal with the routing and forwarding of requests and
responses for content. Content Networks ...
... Networks deal with the routing and forwarding of requests and
responses for content. Content Networks rely on layer 7 protocols
such as HTTP ...
... Request-Routing techniques are used as a vehicle to extend the reach
and scale of Content Delivery Networks. There exist multiple
Request-Routing mechanisms. At a high-level ...
... routing system uses a set of metrics in an attempt to
direct users to surrogate that can best serve the request. For
example, the choice of the surrogate could be based on network
proximity, bandwidth availability, surrogate load and availability of
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... Anycast [5] is an inter-network service that is applicable to
networking situations where a host, application, or user wishes to
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... datagram
to an anycast address and the inter-network is responsible for
providing best effort delivery of the datagram ...
... o Typically, routing protocols are not load sensitive. Hence, the
closest server may not be the one with the least network latency.
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In this technique, an In-Path element is present in the network in
the forwarding path of the client's request. The In-Path element ...
... performance
implications of URL-parsing in the path of the network traffic.
However, it is generally the case that the return traffic is much
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... TLS is used the full URL is not visible to
the content network unless it terminates the TLS session. The
current document focuses on HTTP ...
... determine the best surrogate that can serve a client's request. In
general, these metrics are based on network measurements and feedback
from surrogates. It is possible to combine multiple metrics using
both proximity and surrogate feedback for best surrogate selection.
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... 24].
In order to obtain a set of proximity measurements, a network may
employ active probing techniques.
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o Latency: Network latency measurements metrics are used to
determine the surrogate (or set of surrogates) that has the least
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... K. Johnson et al., "The measured performance of content distribution networks", Proceedings of the Fifth International Web Caching Workshop and Content Delivery Workshop 2000, May 2000. ...
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Abbie Barbir
Nortel Networks
3500 Carling Avenue
Nepean, Ontario K2H 8E9
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