Dynamic binding for use in content distribution

1. A system comprising:

an electronic dynamic binding system comprising:

at least one or more processors coupled to one or more memory systems;

a traffic monitor stored on the one or more memory systems and executable by the at least one or more processors, wherein the traffic monitor is configured to monitor network traffic associated with content from a content provider mapped to a number of content servers in a content delivery network serving the content;

a metric determination module stored on the one or more memory systems and executable by the at least one or more processors, wherein the metric determination module is configured to compute at least one metric associated with the network traffic, wherein the at least one metric comprises content popularity;

a threshold adjustment module stored on the one or more memory systems and executable by the at least one or more processors, wherein the threshold adjustment module is configured to:

(i) adjust the number of content servers mapped to the content provider; and

(ii) provide hysteresis when adjusting the number of content servers;

a binding map stored on the one or more memory systems, wherein the binding map identifies:

(i) the content servers mapped to the content provider; and

(ii) a maximum set of content servers that can be bound to the content provider; and

a remapping module stored on the one or more memory systems and executable by the at least one or more processors, wherein the remapping module is configured to:

when the at least one metric associated with the network traffic is greater than a threshold:

(i) remap other content servers of the content delivery network to the content provider based on the at least one metric associated with the network traffic; and

(ii) gradually allow content requests to be received by the other content servers.

2. The system as recited in claim 1 , further comprising:

a cold node protection module stored on the one or more memory systems and executable by the at least one or more processors, wherein the cold node protection module is configured to limit content requests to a content server that is bound to a content provider.

3. The system as recited in claim 1 wherein the at least one metric is further selected from a group comprising central processing unit overhead, latency, content size, and library size.

4. The system as recited in claim 1 wherein the binding map is hierarchical.

5. A method comprising:

mapping a content provider to a first set of content servers in a content distribution network, wherein the first set of content servers comprises servers in multiple geographic locations;

receiving content from the content provider, the content to be distributed by the first set of content servers in the content distribution network;

by a DNS system comprising one or more DNS servers, monitoring network traffic associated with the content from the content provider;

determining at least one metric associated with the network traffic, wherein the at least one metric comprises at least one of content popularity, central processing unit (CPU) overhead, latency, content size, and library size;

generating a composite metric composed of the at least one metric; and

when the composite metric is greater than a threshold:

remapping the content provider to a second set of content servers in the content distribution network based on the at least one metric; and

gradually allowing content requests to be received by at least one of the second set of content servers.