ACCELERATION OF WEB TRAFFIC USING TCP HAND-OFF

摘要

In various aspects, provided herein are systems, methods and computer-program products for delivering content objects over the Internet from a content delivery network to end-user systems. The systems, methods and products described herein optionally utilize one or more techniques for reducing the delay associated with obtaining non-cached content objects from their respective origin servers, including by re-using existing open connections, by making use of a TCP hand-off technique and by transmitting updates to system digests simultaneous with the exchange of keepalive signals between servers.

主权项

1. A system for delivering content objects over the Internet from a content delivery network to end-user systems, comprising:
an edge server, wherein the edge server is configured to:
receive requests for a content object, wherein:
the requests are to deliver the content object to end-user systems;the requests are from end-user systems;the edge server connects to each of a plurality of storage servers through a switch;the edge server and the plurality of storage servers are part of a content delivery network having a plurality of points of presence (POPs); andthe content delivery network delivers content over the Internet to end-user systems; and the plurality of storage servers, wherein the plurality of storage servers are configured to:
cache content objects from an origin server;receive handed-off requests from the edge server to deliver content objects to end-user systems; andserve content objects to the end-user systems through a route that does not pass through the switch. wherein the edge server is further configured to:
determine one or more storage servers to hand-off the requests for the content object to; andhand-off the requests for the content object to the determined one or more storage servers.