Disclosed is a scalable, hierarchical, distributed network architecture and processes for the delivery of high-performance, end-to-end online multimedia services, including Internet services such as World Wide Web access. The network architecture connects a high-speed private backbone to multiple ne
Disclosed is a scalable, hierarchical, distributed network architecture and processes for the delivery of high-performance, end-to-end online multimedia services, including Internet services such as World Wide Web access. The network architecture connects a high-speed private backbone to multiple network access points of the Internet, to a network operation center, to a back office system, and to multiple regional servers in regional data centers. Each of the regional servers connects to several caching servers in modified head-ends, which in turn connect via fiber optics to many neighborhood nodes. Finally, each node connects via coaxial cable to multiple end-user systems. The processes include those for replicating and caching frequently-accessed content, and multicasting content customized per region or locality.
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I claim: 1. A system for delivery of multimedia services comprising: a high-speed network backbone carrying content; at least two regional servers, coupled to the high-speed network backbone and including a first regional server and a second regional server which each provide a second level of cach
I claim: 1. A system for delivery of multimedia services comprising: a high-speed network backbone carrying content; at least two regional servers, coupled to the high-speed network backbone and including a first regional server and a second regional server which each provide a second level of caching for content received from the high-speed network backbone, the first regional server configured to customize content received from the high-speed network backbone to form a first version of multicast content and the second regional server configured to customize the content received from the high-speed network backbone to form a second version of multicast content; and a plurality of caching servers, including a first caching server coupled to the first regional server and a second caching server coupled to the second regional server, each caching server configured to provide a first level of caching of content for an end user system in a region served by the regional server to which it is coupled, and to provide the customized multicast content formed by the coupled regional server to the end-user system; wherein at least one of the caching servers is associated with a television head-end that provides television signals to the end user system in the region served by the regional server to which it is coupled. 2. The system of claim 1, wherein at least one of the regional servers comprises a cluster of highly-available servers. 3. The system of claim 1, wherein the content received from the high-speed network backbone comprises video content. 4. The system of claim 1, wherein the multicast content comprises multimedia content. 5. The system of claim 1, wherein the high-speed network backbone is coupled to the Internet. 6. The system of claim 1, wherein the multicast content comprises weather information and wherein each regional server customizes the weather information for the region served by the regional server. 7. A method for delivery of multimedia services comprising: providing a high-speed network backbone carrying content; providing at least two regional servers, coupled to the high-speed network backbone and including a first regional server and a second regional server which each provide a second level of caching for content received from the high-speed network backbone, the first regional server configured to customize content received from the high-speed network backbone to form a first version of multicast content and the second regional server configured to customize the content received from the high-speed network backbone to form a second version of multicast content; and providing a plurality of caching servers, including a first caching server coupled to the first regional server and a second caching server coupled to the second regional server, each caching server configured to provide a first level of caching of content for an end user system in a region served by the regional server to which it is coupled, and to provide the customized multicast content formed by the coupled regional server to the end-user system; wherein at least one of the caching servers is associated with a television head-end that provides television signals to the end user system in the region served by the regional server to which it is coupled. 8. The method of claim 7, wherein at least one of the regional servers comprises a cluster of highly-available servers. 9. The method of claim 7, wherein the content received from the high-speed backbone comprises video content. 10. The method of claim 7, wherein the multicast content comprises multimedia content. 11. The method of claim 7, wherein the high-speed network backbone is coupled to the Internet. 12. The method of claim 7, wherein the multicast content comprises weather information and wherein each regional server customizes the weather information for the region served by the regional server. 13. A system for delivery of multimedia services comprising: a first regional server coupled to a high-speed network backbone, the first regional server providing a second level of caching for content received from the high-speed network backbone and customizing the received content to form a first version of multicast content; a second regional server coupled to the high-speed network backbone, the second regional server providing a second level of caching for content received from the high-speed network backbone and customizing the received content to form a second version of multicast content; a first caching server coupled to the first regional server, the first caching server providing a first level of caching of content received from the first regional server and providing the first version of multicast content to an end-user system in a region served by the first regional server; and a second caching server coupled to the second regional server, the second caching server providing a first level of caching of content received from the second regional server and providing the second version of multicast content to an end-user system in a region served by the second regional server; wherein the first caching server is associated with a television head-end that provides television signals to the end user system in the region served by the first regional server. 14. The system of claim 13, wherein the first regional server comprises a cluster of highly-available servers. 15. The system of claim 13, wherein the content received from the high-speed network backbone comprises video content. 16. The system of claim 13, wherein the multicast content comprises multimedia content. 17. The system of claim 13, wherein the multicast content comprises weather information and wherein each regional server customizes the weather information for the region served by the regional server.
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