A method executed by a processing system of an edge router deployed in a content distribution network includes receiving a request from an endpoint device for a first file, determining that a portion of the first file is not stored in a cache of the edge router, determining that the cache is at a capacity threshold, selecting a second file to evict from the cache, wherein the second file is one of a plurality of files stored in the cache, wherein each file of the plurality of files is scheduled to be evicted from the cache when a threshold period of time has passed since a last request for the each file was received by the edge router, and wherein the threshold period of time associated with the second file is scheduled to expire soonest among all of the plurality of files, and evicting the second file from the cache.

A method executed by a processing system of an edge router deployed in a content distribution network includes receiving a request from an endpoint device for a first file, determining that a portion of the first file is not stored in a cache of the edge router, determining that the cache is at a capacity threshold, selecting a second file to evict from the cache, wherein the second file is one of a plurality of files stored in the cache, wherein each file of the plurality of files is scheduled to be evicted from the cache when a threshold period of time has passed since a last request for the each file was received by the edge router, and wherein the threshold period of time associated with the second file is scheduled to expire soonest among all of the plurality of files, and evicting the second file from the cache.

One or more computing devices, systems, and/or methods for delivering video streams are provided. In an example, a first video stream chunk of a video stream is received. The first video stream chunk is transmitted to a first client device in response to a determination that the first video stream chunk is not associated with a quality issue. A second video stream chunk of the video stream is received. The second video stream chunk is analyzed to determine whether the second video stream chunk is associated with one or more quality issues. A first quality issue associated with the second video stream chunk is detected. A request for a corrective video stream chunk is transmitted to a cache node based upon the first quality issue. The corrective video stream chunk is received from the cache node. The corrective video stream chunk is transmitted to the first client device.

The present application discloses techniques for playback of live broadcast content. The techniques comprise receiving a request of playing live broadcast content from a client computing device, wherein the request comprises information indicating a first address associated with the live broadcast content, and the request further comprises a playback time parameter indicating a playback time length; generating a second address based on a current system time parameter, the first address, and the playback time parameter; obtaining live broadcast content based on the second address and transmitting the live broadcast content to the client computing device.

The present application discloses techniques for playback of live broadcast content. The techniques comprise receiving a request of playing live broadcast content from a client computing device, wherein the request comprises information indicating a first address associated with the live broadcast content, and the request further comprises a playback time parameter indicating a playback time length; generating a second address based on a current system time parameter, the first address, and the playback time parameter; obtaining live broadcast content based on the second address and transmitting the live broadcast content to the client computing device.

A method for providing one or more content item recommendations for a user of a content distribution system having a plurality of users, comprises: opening a content recommendation session for a selected user; retrieving user data for the selected user from a first storage resource storing user data on a plurality of users, storing the user data in a second storage resource, and maintaining the user data in the second storage resource during the content recommendation session for the selected user; using the user data from the second storage resource and content information concerning content available from one or more content sources to generate at least one content item recommendation for the selected user during the content recommendation session for the selected user; and providing the at least one content item recommendation, wherein the method further comprises maintaining content recommendation sessions for a plurality of the users and maintaining in the second storage resource user data for said plurality of the users, substantially simultaneously.

Origin offload is a key performance indicator of a content delivery network (CDN). This patent document presents unique methods and systems for measuring origin offload and applying those measurements to improve the offload. The techniques presented herein enable resource-efficient measurement of origin offload by individual servers and aggregation and analysis of such measurements to produce significant insights. The teachings hereof can be used to better identify root causes of suboptimal offload performance, to tune CDN settings and configurations, and to modify network operations, deployment and/or capacity planning. In addition, discussed herein are improved metrics showing offload in relation to the maximum achievable offload for the particular traffic being served.

Origin offload is a key performance indicator of a content delivery network (CDN). This patent document presents unique methods and systems for measuring origin offload and applying those measurements to improve the offload. The techniques presented herein enable resource-efficient measurement of origin offload by individual servers and aggregation and analysis of such measurements to produce significant insights. The teachings hereof can be used to better identify root causes of suboptimal offload performance, to tune CDN settings and configurations, and to modify network operations, deployment and/or capacity planning. In addition, discussed herein are improved metrics showing offload in relation to the maximum achievable offload for the particular traffic being served.

Described is a method of delivering content over network using an approach referred to here as “Multicast Assisted Unicast Delivery” (MAUD), as a multicast network is used to assist, rather than substituting for, an otherwise unicast path. Content is requested by client devices from a content server over unicast. These unicast requests are sent via a first and a second proxy, before being sent by the second proxy to the content server, all over unicast. The responses containing the requested content is sent back to the second proxy over unicast from the content server. The second proxy processes the received unicast responses and sends the responses over a multicast stream to the first proxy. The first proxy processes the received responses and sends them onto the requesting client devices over unicast.

Described is a method of delivering content over network using an approach referred to here as “Multicast Assisted Unicast Delivery” (MAUD), as a multicast network is used to assist, rather than substituting for, an otherwise unicast path. Content is requested by client devices from a content server over unicast. These unicast requests are sent via a first and a second proxy, before being sent by the second proxy to the content server, all over unicast. The responses containing the requested content is sent back to the second proxy over unicast from the content server. The second proxy processes the received unicast responses and sends the responses over a multicast stream to the first proxy. The first proxy processes the received responses and sends them onto the requesting client devices over unicast.