公开(公告)号：US11743190B2

公开(公告)日：2023-08-29

申请号：US17588016

申请日：2022-01-28

Applicant: NETFLIX, INC.

Inventor： Sergey Fedorov ,  Phelps Watson Williams ,  Niosha Behnam

IPC: H04L47/125 ,  H04L47/2441 ,  G06F17/11 ,  H04N21/239 ,  H04L67/1036 ,  H04L43/0864 ,  H04L67/101 ,  H04L67/1021 ,  H04L61/4511 ,  H04L67/56 ,  H04L67/1008 ,  H04L67/1012 ,  H04L65/612

CPC classification number: H04L47/125 ,  G06F17/11 ,  H04L43/0864 ,  H04L47/2441 ,  H04L61/4511 ,  H04L67/101 ,  H04L67/1021 ,  H04L67/1036 ,  H04L67/56 ,  H04N21/239 ,  H04L65/612 ,  H04L67/1008 ,  H04L67/1012

Abstract: In various embodiments, domain name system (DNS) servers are implemented on a content distribution network (CDN) infrastructure in order to facilitate centralized control of traffic steering. Each server appliance in the CDN infrastructure acts as both an authoritative DNS nameserver and a dynamic request proxy, and each such server appliance is assigned to one of multiple cloud computing system regions. The assignment of server appliances to cloud regions is based on latency measurements collected via client application probes and an optimization that minimizes an overall latency experienced by the client applications subject to constraints that the maximum traffic to each cloud region is less than a capacity constraint for that region, the maximum deviation of traffic to each cloud regions at any point in time is less than a given percentage, and the maximum deviation of traffic between direct and indirect paths is less than a given percentage.

公开(公告)号：US11240156B2

公开(公告)日：2022-02-01

申请号：US16693180

申请日：2019-11-22

Applicant: NETFLIX, INC.

Inventor： Sergey Fedorov ,  Phelps Watson Williams ,  Niosha Behnam

IPC: H04L12/803 ,  H04L12/851 ,  G06F17/11 ,  H04L29/08 ,  H04N21/239 ,  H04L12/26 ,  H04L29/12 ,  H04L29/06

Abstract: In various embodiments, domain name system (DNS) servers are implemented on a content distribution network (CDN) infrastructure in order to facilitate centralized control of traffic steering. Each server appliance in the CDN infrastructure acts as both an authoritative DNS nameserver and a dynamic request proxy, and each such server appliance is assigned to one of multiple cloud computing system regions. The assignment of server appliances to cloud regions is based on latency measurements collected via client application probes and an optimization that minimizes an overall latency experienced by the client applications subject to constraints that the maximum traffic to each cloud region is less than a capacity constraint for that region, the maximum deviation of traffic to each cloud regions at any point in time is less than a given percentage, and the maximum deviation of traffic between direct and indirect paths is less than a given percentage.

公开(公告)号：US10348589B2

公开(公告)日：2019-07-09

申请号：US15043429

申请日：2016-02-12

Applicant: Netflix, Inc.

Inventor： Sergey Fedorov ,  Stefan Praszalowicz

IPC: H04L29/06 ,  H04L12/26 ,  H04L12/24 ,  H04L29/08

Abstract: In one embodiment of the present invention, a content delivery network (CDN) monitoring system manages a CDN. The CDN monitoring system includes finite state machines (FSMs), and the current states of the FSMs reflect characteristics and/or behaviors associated with the CDN. In operation, the CDN monitoring system computes actions based on current states and/or metrics associated with the CDN. The actions may cause one or more of the FSMs execute state transitions. As part of a state transition, the current state of the FSM changes and an event is generated. The event triggers an event handler that may perform any type of management operations, such as generating performance reports and rerouting client requests. Notably, because each current state may be an aggregation of other current states, the CDN monitoring system may be configured to compute current states that accurately represent complex interactions between components within the CDN.