公开(公告)号：US20230035033A1

公开(公告)日：2023-02-02

申请号：US17966859

申请日：2022-10-16

Applicant: Level 3 Communications, LLC

Inventor： William Crowder

IPC: H04N21/433 ,  H04L9/40 ,  G06F16/955 ,  H04L67/025 ,  H04L65/612 ,  H04L67/568

Abstract: Examples described herein relate to apparatuses and methods for managing caching for a content delivery system, which may include receiving a content request indicating that the caching agent is requesting content data for a client, filling the content data in a first cache storage of the business logic agent, providing the cached content data to the caching agent, and while a second cache storage of the caching agent is being filled with the content data, maintaining the cached content data in response to receiving additional content requests from the caching agent. The additional content requests may indicate that the caching agent is requesting the same content data for additional clients.

公开(公告)号：US20230026912A1

公开(公告)日：2023-01-26

申请号：US17958355

申请日：2022-10-01

Applicant: Level 3 Communications, LLC

Inventor： William Crowder

IPC: H04L67/1097 ,  G06F12/0866 ,  H04L67/5682

Abstract: Examples described herein relate to systems and methods for storing content items. The methods may be implemented by a computer comprising a processor, primary storage device, secondary storage, device and network interface. The primary storage device may receive, via the network interface, a plurality of content items responsive to respective requests from clients. The plurality of content items may be distributed, via the network interface, from the primary storage device to clients responsive to the respective requests from the clients. The processor may generate a dynamic priority list for the content items based on the respective requests from the clients over time, and may write, based on the dynamic priority list, only a subset of the content items to the secondary storage device.

公开(公告)号：US11425223B2

公开(公告)日：2022-08-23

申请号：US16909245

申请日：2020-06-23

Applicant: Level 3 Communications, LLC

Inventor： Christopher Newton ,  William Crowder

IPC: G06F15/16 ,  H04L67/5682 ,  H04L67/02 ,  H04L9/40 ,  H04L67/568 ,  H04L67/00

Abstract: A computer-implemented method, operable with a content delivery network (CDN) uses late binding of caching policies; by a caching node in the CDN, in response to a request for content, determining if the content is cached locally. When it is determined that said content is cached locally, then: determining a current cache policy associated with the content; and then determining, based on said current cache policy associated with the content, whether it is acceptable to serve the content that is cached locally; based on said determining, when it is not acceptable to serve the content that is cached locally, obtaining a new version of the content and then serving the new version of the content, otherwise when it is acceptable to serve the content that is cached locally, serving the content that is cached locally.

公开(公告)号：US10992547B2

公开(公告)日：2021-04-27

申请号：US13802406

申请日：2013-03-13

Applicant: Level 3 Communications, LLC

Inventor： Lewis Robert Varney ,  Laurence R. Lipstone ,  William Crowder ,  Andrew Swart ,  Christopher Newton

IPC: H04L12/24 ,  H04L29/08 ,  H04L29/06 ,  H04L29/12 ,  G06F9/50 ,  G06F15/177 ,  G06F15/173 ,  H04L12/26 ,  H04L12/911 ,  G06F12/0808

Abstract: A method includes maintaining first and second mapping data. The first mapping data is from canonical names (CNAMEs) to binding names (BNAMEs), and the second mapping data is from BNAMEs to address information. The method includes using the first mapping data to map a canonical name to a binding name; and then using the second mapping data to map the binding name to corresponding address information.

公开(公告)号：US10862790B2

公开(公告)日：2020-12-08

申请号：US16429455

申请日：2019-06-03

Applicant: LEVEL 3 COMMUNICATIONS, LLC

Inventor： William Crowder

IPC: H04L12/26 ,  H04L29/08 ,  H04L9/08 ,  H04L9/32

Abstract: A computer-implemented method, in a content delivery (CD) network, wherein said CD network delivers content on behalf of multiple content providers. The method includes, at a client, requesting one or more parts of a randomly generated test object; in response to said requesting, receiving one or more response objects; generating one or more portions of said randomly generated test object, and comparing the one or more response objects received to at least some of the one or more portions of the object generated. Based on said comparing, when said one or more response objects received do not match said at least some of the one or more portions of the object generated, reporting and logging an error.

公开(公告)号：US10834180B2

公开(公告)日：2020-11-10

申请号：US15727704

申请日：2017-10-09

Applicant: Level 3 Communications, LLC

Inventor： William Crowder ,  Christopher Newton

IPC: H04L29/08

Abstract: A content delivery (CD) network delivers content on behalf of multiple content providers. A method includes determining that certain content is trending in a first geographic region during a first time period; and, based on the determining, causing the certain content to be prefetched by the CDN in a second geographic region by a given time after said first time period, wherein, during the first time period, the time in the second geographic region is earlier than the time in the first geographic region.

公开(公告)号：US10826793B2

公开(公告)日：2020-11-03

申请号：US14088358

申请日：2013-11-23

Applicant: Level 3 Communications, LLC

Inventor： Lewis Robert Varney ,  Laurence R. Lipstone ,  William Crowder ,  Andrew Swart ,  Christopher Newton

IPC: G06F15/16 ,  H04L12/24 ,  H04L29/08 ,  G06F9/50 ,  H04L29/06 ,  G06F15/177 ,  G06F15/173 ,  H04L12/26 ,  H04L12/911 ,  H04L29/12 ,  G06F12/0808

Abstract: A computer-implemented method, operable in a system comprising multiple services, the services running on a plurality of devices, includes tracking first information about requests sent from at least one first service in a first collection of services to at least one second service in a second collection of services, the first collection of services being distinct from the second collection of services; tracking second information from the second collection of services about requests supposedly processed by the second collection of services; and reconciling the first information with the second information. The reconciling may be used to verify or audit information reported by the second collection of services.

公开(公告)号：US10701173B2

公开(公告)日：2020-06-30

申请号：US15588935

申请日：2017-05-08

Applicant: Level 3 Communications, LLC

Inventor： Christopher Newton ,  William Crowder

IPC: G06F15/16 ,  H04L29/08 ,  H04L29/06

Abstract: A computer-implemented method, operable with a content delivery network (CDN) uses late binding of caching policies; by a caching node in the CDN, in response to a request for content, determining if the content is cached locally. When it is determined that said content is cached locally, then: determining a current cache policy associated with the content; and then determining, based on said current cache policy associated with the content, whether it is acceptable to serve the content that is cached locally; based on said determining, when it is not acceptable to serve the content that is cached locally, obtaining a new version of the content and then serving the new version of the content, otherwise when it is acceptable to serve the content that is cached locally, serving the content that is cached locally.

公开(公告)号：US20190327326A1

公开(公告)日：2019-10-24

申请号：US15960393

申请日：2018-04-23

Applicant: Level 3 Communications, LLC

Inventor： Daniel Lee Jensen ,  William Crowder ,  Christopher Newton ,  William R. Power

IPC: H04L29/08 ,  H04L29/06

Abstract: A server in a content delivery (CD) network that distributes content on behalf of one or more subscribers. Responsive to a request from a client for a particular resource, if the particular resource is already in a cache on the server, serving the particular to the client from the cache; otherwise if the particular resource is not already cached on the server, when a count value exceeds a first threshold value, obtaining, caching, and serving the particular resource. When the count value is less than a second threshold value, obtaining and serving the particular resource. When the count value is: (i) not less than the second threshold value, and (ii) not greater than the first threshold value, then obtaining the particular resource and selectively caching the particular resource; and serving the particular resource to the client.

公开(公告)号：US20190109772A1

公开(公告)日：2019-04-11

申请号：US16202589

申请日：2018-11-28

Applicant: Level 3 Communications, LLC

Inventor： Laurence R. Lipstone ,  William Crowder ,  Andrew Swart ,  Christopher Newton ,  Lewis Robert Varney

IPC: H04L12/24 ,  H04L29/06 ,  H04L12/911 ,  H04L29/08 ,  G06F9/50

Abstract: A computer-implemented method in a content delivery (CD) network includes determining at least one pseudo client IP address using first log information and second log information. The first log information being from a rendezvous service in the content delivery (CD) network, and includes at least one resolver IP address associated with at least one first request made at the rendezvous service. The second log information is from at least one probe service in the CD network, and includes at least one client IP address associated with at least one second request to the at least one probe service. The method also includes making an association between (i) the at least one pseudo client IP address and (ii) the at least one resolver IP address; and then, responsive to a name resolution request, the name resolution request including the at least one resolver IP address, the rendezvous service using the at least one pseudo client IP address instead of the resolver IP address to resolve the name.