WO2016141820A1

WO2016141820A1 - Cdn network system and speed limit control method thereof, and cdn node and server

Info

Publication number: WO2016141820A1
Application number: PCT/CN2016/075375
Authority: WO
Inventors: 袁茁
Original assignee: 阿里巴巴集团控股有限公司; 袁茁
Priority date: 2015-03-12
Filing date: 2016-03-02
Publication date: 2016-09-15
Also published as: CN106034083A; CN106034083B

Abstract

Proposed is a CDN network system and a speed limit control method thereof, and a CDN node and a server. The method comprises: an intra-node central control server in each CDN node sending to a global central summarizing server flow information and domain name information about each CDN node, and the global central summarizing server generating, according to the flow information and the domain name information, a speed limit instruction comprising a bandwidth value actually provided by the corresponding CDN node for a supported domain name; the intra-node central control server receiving the speed limit instruction and calculating, according to the actually provided bandwidth value, a bandwidth value provided by each web server in a CDN node for the supported domain name; and the intra-node central control server sending to each web server the bandwidth value provided by each web server in the CDN node for the supported domain name, so that each web server performs control according to the bandwidth value. The method of the embodiments of the present application avoids the case where a domain name occupies too many bandwidth resources of a CDN node.

Description

CDN network system and its speed limit control method, CDN node and server

Technical field

The present invention relates to the field of content distribution network technologies, and in particular, to a CDN (Content Delivery Network) network system and a rate limiting control method thereof, a CDN node, and a server.

Background technique

As shown in FIG. 1, the CDN network system includes multiple CDN edge nodes. When a user requests a resource file of a CDN (such as a Web service or video), the user's request is connected to a CDN edge node. On a web server. Currently, the web server speeds the download of the user for the request. However, the target of the speed limit is always for the user who requests to download the resource file. The speed limit download is only for the resource file requested by the user, and the domain name cannot be resolved on the CDN. The problem that the total bandwidth exceeds the configured threshold. That is to say, if more users access a domain name, the bandwidth of the CDN occupied by the domain name will be larger, which affects the bandwidth provided by the Web server on the CDN for other domain names.

Application content

The present application aims to solve at least one of the technical problems in the related art to some extent.

To this end, the first object of the present application is to propose a method for controlling the rate limit of a CDN network system, which implements controllable bandwidth values for domain names served on CDN nodes, and avoids domain names due to certain unpredictable The problem occupies excessive bandwidth resources of the CDN node and affects the bandwidth resources of the CDN nodes of other domain names served on the CDN node.

A second object of the present application is to propose a speed limit control method for a CDN network system.

A third object of the present application is to propose a CDN network system.

A fourth object of the present application is to propose a CDN node.

A fifth object of the present application is to propose a global center summary server.

To achieve the above objective, the first aspect of the present application provides a method for controlling a rate limit of a CDN network system, where the CDN network system includes a plurality of CDN nodes and a global center summary server that communicates with the plurality of CDN nodes. Each of the CDN nodes includes at least one WEB server and an intra-node central control server in communication with the at least one WEB server and the global hub summary server, the method comprising the steps of: an intra-node center in each CDN node The control server sends the traffic information and the domain name information of each CDN node to the global center summary server, so that the global center summary server generates a speed limit command according to the traffic information and the domain name information of each CDN node, where The speed limit command includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name; Receiving, by the in-point central control server, the rate limit command, and calculating, according to the actual provided bandwidth value for the supported domain name, a bandwidth value provided by each WEB server in the CDN node for the supported domain name; The intra-node central control server sends a bandwidth value provided by each WEB server in the CDN node for the supported domain name to each WEB server, so that each WEB server according to its own corresponding Controlling the bandwidth value provided by the supported domain name.

The speed limit control method of the CDN network system in the embodiment of the present application summarizes and counts the real-time bandwidth information of the domain name served by the CDN node through the data communication of the WEB server, the central control server in the node, and the global central summary server, and is globally The central summary server sends a rate limiting policy to the WEB server, so that the WEB server performs feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth. Threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name avoids excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domain names served on the CDN node at the CDN node. Bandwidth resources on.

To achieve the above objective, the second aspect of the present application provides a method for controlling a rate limit of a CDN network system, where the CDN network system includes a plurality of CDN nodes and a global center summary server that communicates with the plurality of CDN nodes. Each of the CDN nodes includes at least one WEB server and an intra-node central control server in communication with the at least one WEB server and the global hub summary server, the method comprising the steps of: the global hub summary server receiving each The traffic information and the domain name information of the CDN node, and generate a speed limit command according to the traffic information and the domain name information of each CDN node, where the speed limit command includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name; Transmitting, by the global center summary server, the speed limit instruction to an intra-node central control server in the CDN node, so that the central control server in the node calculates the bandwidth value according to the actual provided bandwidth value for the supported domain name. The bandwidth value provided by each WEB server within the CDN node for the supported domain name, and Sending, to each of the WEB servers, a bandwidth value provided by each WEB server in the CDN node for the supported domain name, so that each WEB server provides according to its own corresponding domain name for the supported domain name. The bandwidth value is controlled.

To achieve the above objective, the third aspect of the present application provides a CDN network system, and the CDN network system A plurality of CDN nodes and a global hub summary server in communication with the plurality of CDN nodes, each of the CDN nodes including at least one WEB server and a node in communication with the at least one WEB server and the global hub summary server a central control server, wherein the global center summary server is configured to generate a speed limit command according to the traffic information and the domain name information of each CDN node, where the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name The in-node central control server in each CDN node is configured to send the traffic information and domain name information of each CDN node to the global center summary server, and receive the speed limit instruction, and support according to the target Actually providing a bandwidth value of the domain name, calculating a bandwidth value provided by each WEB server in the CDN node for the supported domain name, and providing each WEB server in the CDN node for the supported domain name The bandwidth value is sent to each WEB server; and each of the WEB servers is used to target according to its own Domain bandwidth value provided for controlling said supports.

The CDN network system in the embodiment of the present application aggregates and counts the real-time bandwidth information of the domain name served by the CDN node through the data communication of the WEB server, the central control server in the node, and the global central summary server, and the global center summary server sends the WEB. The server sends a rate limiting policy, so that the WEB server performs feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name avoids excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domain names served on the CDN node at the CDN node. Bandwidth resources on.

To achieve the above objective, the fourth aspect of the present application proposes a CDN node, the CDN node including at least one WEB server and an intra-node central control server in communication with the at least one WEB server and the global central summary server, wherein The in-node central control server includes: a first sending module, configured to send the traffic information and domain name information of each CDN node to the global center summary server; and the first receiving module is configured to receive the global center a speed limit instruction generated by the summary server according to the traffic information and the domain name information of each CDN node, where the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name; and a calculation module, configured to Calculating, according to an actual bandwidth value of the supported domain name, a bandwidth value provided by each WEB server in the CDN node for the supported domain name; and a second sending module, configured to: each WEB in the CDN node Sending, by the server, the bandwidth value provided by the supported domain name to the WEB server; and the WEB server In accordance with a control value for the bandwidth of the support provided by the domain name corresponding to itself.

The CDN node in the embodiment of the present application aggregates and collects the real-time bandwidth information of the domain name served by the CDN node through data communication with the global center summary server, and the global center summary server sends a rate limit policy to the WEB server in the CDN node. The WEB server performs feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth. Threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name avoids excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domain names served on the CDN node at the CDN node. Bandwidth resources on.

To achieve the above objective, the fifth aspect of the present application provides a global center summary server that communicates with a plurality of CDN nodes, each of the CDN nodes including at least one WEB server and the at least one An in-node central control server that communicates with the global central summary server, the global central summary server includes: a receiving module, configured to receive traffic information and domain name information of each of the CDN nodes; and a generating module, configured to: Generating a rate limit instruction according to the traffic information and the domain name information of each CDN node, where the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name; and a sending module, configured to each The in-node central control server in the CDN node transmits the speed limit command.

The global central summary server of the embodiment of the present invention aggregates and counts the real-time bandwidth information of the domain name served by the CDN node through the data communication with the WEB server and the central control server in the node, and sends a speed limit to the WEB server. The policy enables the WEB server to perform feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name avoids excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domain names served on the CDN node at the CDN node. Bandwidth resources on.

The aspects and advantages of the present invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic diagram of a CDN network system in the related art;

2 is a flowchart of a method for controlling a rate limit of a CDN network system according to an embodiment of the present application;

3 is a schematic diagram of a CDN network system according to an embodiment of the present application;

4 is a flowchart of a method for controlling a rate limit of a CDN network system according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a CDN network system according to an embodiment of the present application; FIG.

6 is a schematic structural diagram of a CDN node according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a global center summary server according to an embodiment of the present application.

detailed description

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process. And the scope of the preferred embodiments of the present application includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in the reverse order depending on the functions involved, in accordance with the illustrated or discussed order. It will be understood by those skilled in the art to which the embodiments of the present application pertain.

2 is a flowchart of a method for controlling a rate limit of a CDN network system according to an embodiment of the present application, and FIG. 3 is a schematic diagram of a CDN network system according to an embodiment of the present application.

As shown in FIG. 2, the speed limit control method of the CDN network system includes:

S101. The intra-node central control server in each CDN node sends the traffic information and the domain name information of each CDN node to the global central summary server, so that the global central summary server generates a speed limit according to the traffic information and the domain name information of each CDN node. The instructions, wherein the rate limit command includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name.

Specifically, as shown in FIG. 3, the CDN network system includes a plurality of CDN nodes and a global center summary server that communicates with a plurality of CDN nodes. Wherein, each CDN node includes at least one WEB server and an intra-node central control server that communicates with at least one WEB server and a global center summary server.

When a user accesses a domain name, the user's access request is sent to the WEB server of a specific CDN node, and the WEB server returns the resource file required by the user to access the domain name. That is, when the user downloads the resource file from a certain WEB server, the WEB server counts the number of bytes sent by the WEB server every second to record the downlink traffic of the domain name at the current time. The WEB server summarizes the increments of the domain name and the domain name downlink traffic according to the first preset period, and sends the summary result to the intra-node central control server in the CDN node.

In an embodiment of the present application, the intra-node central control server in each CDN node receives the traffic increment reported by the WEB server in the CDN node for the supported domain name, and generates a CDN node corresponding according to the traffic increment and the supported domain name. Traffic information and domain name information. Specifically, the in-node central control server from the CDN section Each WEB server in the point collects the bandwidth of each domain name, and calculates the bandwidth value of each domain name in the CDN node. That is to say, after receiving the increment of the domain name and the domain name downlink traffic sent by the WEB server, the central control server in the node summarizes the increment of the domain name and the domain name downlink traffic supported by each WEB server according to the second preset period. The domain name information and the corresponding traffic information under the CDN node are generated. Then, the central control server in the node sends the generated domain name information and the corresponding traffic information to the global center summary server, so that the global center summary server can query the current bandwidth of any domain name according to the domain name information and the corresponding traffic information at any time. Information, or query bandwidth information on any CDN node to any domain name.

In an embodiment of the present application, the global center summary server aggregates the traffic information and the domain name information sent by each CDN node, and determines whether the current bandwidth of the domain name is greater than the bandwidth threshold. If the current bandwidth of the domain name is greater than the bandwidth threshold, According to the traffic information and domain name information sent by each CDN node, each CDN node provides a speed limit value for the domain name, and a speed limit command according to the actual bandwidth value provided by each CDN node for the domain name. Specifically, the global center summary server calculates the bandwidth information of each domain name on each CDN node according to the domain name information and the traffic information summarized by the CDN node, and then determines whether the bandwidth information of each domain name exceeds the configured bandwidth threshold. If the current bandwidth of a domain name exceeds the bandwidth threshold, the bandwidth information of the domain name that is queried by the global center summary server is used to estimate the bandwidth threshold that each CDN node should actually serve, according to the bandwidth information served by each CDN node. The speed limit threshold of each CDN node is calculated, and a speed limit command is generated at the same time. The global center summary server delivers the speed limit command of the domain name to the central control server in the node of the CDN node, and notifies the central control server of the bandwidth value that the domain name server should serve under the CDN node.

In one embodiment of the present application, if the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node supporting the domain name is kept unchanged. Specifically, if the global center summary server determines that the bandwidth information of a domain name does not exceed the configured bandwidth threshold, the global center summary server only collects the bandwidth information of the domain name, and does not issue a speed limit command.

S102. The intra-node central control server receives the speed limit command, and calculates a bandwidth value provided by each WEB server in the CDN node for the supported domain name according to the actual bandwidth value provided for the supported domain name.

Specifically, after receiving the bandwidth value that the domain name should serve under the CDN node, the central control server in the node determines the number of WEB servers serving the domain name in the CDN node, and calculates that each WEB server should provide the domain name. Bandwidth value.

S103. The intra-node central control server sends the bandwidth value provided by each WEB server in the CDN node to the WEB server for the supported domain name, so that each WEB server according to its own corresponding bandwidth provided for the supported domain name. The value is controlled.

Specifically, the intra-node central control server sends the bandwidth value that each WEB server should provide to the corresponding WEB server. The WEB server can be configured with a bandwidth threshold, and the bandwidth value of the domain name is limited to Between wide thresholds. The WEB server adjusts the bandwidth value of the domain name served within the bandwidth threshold, thereby achieving the purpose of controlling the download speed when the user accesses the domain name.

In an embodiment of the present application, the global center summary server generates a speed limit instruction according to a preset period. When the central control server in the node in the CDN node does not receive the speed limit instruction of the global center summary server, stopping in the CDN node. The WEB server performs speed limit. Specifically, in the process of limiting the download speed of the user by the web server in the CDN node, the global center summary server determines that the current bandwidth value of the domain name does not exceed the bandwidth threshold, as the current bandwidth value of the domain name decreases. The global center summary server no longer issues a speed limit command to each CDN node. The CDN node no longer issues a speed limit command to each WEB server in the CDN node, and the WEB server no longer controls the provided bandwidth value, thereby restoring the user's download speed.

In order to implement the above embodiments, the present application also proposes a speed limit control method for a CDN network system.

4 is a flowchart of a method for controlling a rate limit of a CDN network system according to an embodiment of the present application. As shown in FIG. 4, a method for controlling a rate limit of a CDN network system includes:

S301. The global center summary server receives the traffic information and the domain name information of each CDN node, and generates a speed limit command according to the traffic information and the domain name information of each CDN node, where the speed limit command includes the actual CDN node for the supported domain name. Provide a bandwidth value.

In one embodiment of the present application, the intra-node central control server in each CDN node receives the CDN section The traffic increment reported by the WEB server for the supported domain name is generated, and the traffic information and domain name information corresponding to the CDN node are generated according to the traffic increment and the supported domain name. Specifically, the intra-node central control server collects the bandwidth of each domain name from each WEB server in the CDN node, and calculates the bandwidth value of each domain name in the CDN node. That is to say, after receiving the increment of the domain name and the domain name downlink traffic sent by the WEB server, the central control server in the node summarizes the increment of the domain name and the domain name downlink traffic supported by each WEB server according to the second preset period. The domain name information and the corresponding traffic information under the CDN node are generated. Then, the central control server in the node sends the generated domain name information and the corresponding traffic information to the global center summary server, so that the global center summary server can query the current bandwidth of any domain name according to the domain name information and the corresponding traffic information at any time. Information, or query bandwidth information on any CDN node to any domain name.

In an embodiment of the present application, the global center summary server aggregates the traffic information and the domain name information sent by each CDN node, and determines whether the current bandwidth of the domain name is greater than the bandwidth threshold. If the current bandwidth of the domain name is greater than the bandwidth threshold, According to the traffic information and domain name information sent by each CDN node, each CDN node provides a speed limit value for the domain name, and a speed limit command according to the actual bandwidth value provided by each CDN node for the domain name. Specifically, the global center summary server calculates the bandwidth information of each domain name on each CDN node according to the domain name information and the traffic information summarized by the CDN node, and then determines whether the bandwidth information of each domain name exceeds the configured bandwidth threshold. If the current bandwidth of a domain name exceeds the bandwidth threshold, the bandwidth information of the domain name that is queried by the global center summary server is used to estimate the bandwidth threshold that each CDN node should actually serve, according to the bandwidth information served by each CDN node. The speed limit threshold of each CDN node is calculated, and a speed limit command is generated at the same time.

S302. The global center summary server sends a speed limit command to the central control server in the node in the CDN node, so that the central control server in the node calculates each WEB server in the CDN node according to the actual bandwidth value provided for the supported domain name. Supporting the bandwidth value provided by the domain name, and sending each WEB server in the CDN node to each WEB server for the bandwidth value provided by the supported domain name, so that each WEB server provides according to its corresponding domain name for the supported domain name. The bandwidth value is controlled.

Specifically, the global center summary server delivers the speed limit command of the domain name to the central control server in the node of the CDN node, and notifies the central control server of the node that the domain name should be served under the CDN node.

After receiving the bandwidth value that the domain name should serve under the CDN node, the central control server in the node determines the number of WEB servers serving the domain name in the CDN node, and calculates that each WEB server should be the domain. The bandwidth value provided by the name. The intra-node central control server sends the bandwidth value that each WEB server should provide to the corresponding WEB server. The WEB server can be configured with a bandwidth threshold, and the bandwidth value of the domain name is limited to a bandwidth threshold. The WEB server adjusts the bandwidth value of the domain name served within the bandwidth threshold, thereby achieving the purpose of controlling the download speed when the user accesses the domain name.

In order to implement the above embodiments, the present application also proposes a CDN network system.

FIG. 5 is a schematic structural diagram of a CDN network system according to an embodiment of the present application. As shown in FIG. 5, the CDN network system includes: a plurality of CDN nodes 100 and a global center summary server 200 that communicates with a plurality of CDN nodes. Each CDN node 100 includes at least one WEB server 110 and an intra-node central control server 120 in communication with at least one WEB server 110 and global central summary server 200.

Specifically, the intra-node central control server 120 in each CDN node 100 is configured to transmit the traffic information and domain name information of each CDN node 100 to the global center summary server 200. Specifically, when a user accesses a certain domain name, the user's access request is sent to the WEB server 110 of a specific CDN node 100, and the WEB server 110 returns the resource file required for the user to access the domain name. That is, when the user downloads the resource file from a certain WEB server 110, the WEB server 10 counts the number of bytes sent by the WEB server 110 per second to record the downlink traffic of the domain name at the current time. The WEB server 110 summarizes the increments of the domain name and the domain name downlink traffic according to the first preset period, and sends the summary result to the intra-node central control server 120 in the CDN node 100.

In one embodiment of the present application, the intra-node central control server 120 in each CDN node 100 also And receiving the traffic increment for the supported domain name reported by the WEB server 110 in the CDN node 100, and generating traffic information and domain name information corresponding to the CDN node 100 according to the traffic increment and the supported domain name. Specifically, the intra-node central control server 120 collects the bandwidth status of each domain name from each WEB server 110 in the CDN node 100, and calculates the bandwidth value of each domain name in the CDN node 100. That is, after receiving the increment of the domain name and the domain name downlink traffic sent by the WEB server 110, the intra-node central control server 120 increases the downlink traffic of the domain name and the domain name supported by each WEB server 110 according to the second preset period. The amount is aggregated to generate domain name information and corresponding traffic information under the CDN node 100. Then, the in-node central control server 120 transmits the generated domain name information and the corresponding traffic information to the global center summary server 200. Therefore, the global center summary server 200 can query the current bandwidth information of any domain name according to the domain name information and the corresponding traffic information at any time, or query the bandwidth information of any domain name at any CDN node 100.

The global center summary server 200 is configured to generate a speed limit command according to the traffic information and the domain name information of each CDN node 100, wherein the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node 100 for the supported domain name.

In an embodiment of the present application, the global center summary server 200 is further configured to summarize the traffic information and the domain name information sent by each CDN node 100, and determine whether the current bandwidth of the domain name is greater than the bandwidth threshold, and the current bandwidth of the domain name. When greater than the bandwidth threshold, the rate information and domain name information transmitted by each CDN node 100 is generated by each CDN node 100 for the actual bandwidth value of the domain name, and the speed limit command is generated based on the actual bandwidth value provided by each CDN node 100 for the domain name. Specifically, the global center summary server 200 calculates the bandwidth information of each domain name on each CDN node 100 according to the domain name information and the traffic information summarized by the CDN node 100, and then determines whether the bandwidth information of each domain name exceeds the configured bandwidth. Threshold. If the current bandwidth of a certain domain name exceeds the bandwidth threshold, the bandwidth information of the domain name queried by the global center summary server 200 is used to estimate the bandwidth threshold that each CDN node 100 should actually serve, according to each CDN node 100. The bandwidth information calculates a speed limit threshold for each CDN node 100 and generates a speed limit command. The global center summary server 200 delivers the speed limit command of the domain name to the intra-node central control server 120 in the CDN node 100, and notifies the central control server 120 of the bandwidth value that the domain name should serve under the CDN node 100.

In an embodiment of the present application, the global center summary server 200 is further configured to keep the bandwidth of each CDN node 100 supporting the domain name unchanged when the current bandwidth of the domain name is less than the bandwidth threshold. Specifically, if the global center summary server 200 determines that the bandwidth information of a domain name does not exceed the configured bandwidth threshold, the global center summary server 200 only collects the bandwidth information of the domain name, and does not issue a speed limit command.

The intra-node central control server 120 in each CDN node 100 receives the rate limit command and calculates the bandwidth value provided by each WEB server 110 within the CDN node 100 for the supported domain name based on the actual provided bandwidth value for the supported domain name. And transmitting, to each WEB server 110, the bandwidth value provided by each WEB server 110 within the CDN node 100 for the supported domain name. Specifically, the intra-node central control server 120 After receiving the bandwidth value that the domain name should serve under the CDN node 100, the number of the WEB servers 110 serving the domain name in the CDN node 100 is determined, and the bandwidth value that each WEB server 110 should provide for the domain name is calculated. The intra-node central control server 120 transmits the bandwidth value that each WEB server 110 should provide to the corresponding WEB server 110.

Each WEB server 110 is configured to control according to its own corresponding bandwidth value provided for the supported domain name. Specifically, the WEB server 110 can configure a bandwidth threshold to limit the bandwidth value of the domain name between the bandwidth thresholds. The WEB server 110 adjusts the bandwidth value serving the domain name within the bandwidth threshold, thereby achieving the purpose of controlling the download speed when the user accesses the domain name.

In an embodiment of the present application, the global center summary server 200 generates a speed limit instruction according to a preset period, and the in-node center control server 120 in the CDN node 100 is further configured to not receive the speed limit instruction of the global center summary server 200. At this time, the speed limit of the WEB server 110 in the CDN node 100 is stopped. Specifically, in the process of limiting the download speed of the user by the WEB server 110 in the CDN node 100, the global center summary server 200 determines that the current bandwidth value of the domain name no longer exceeds the bandwidth as the current bandwidth value of the domain name decreases. The threshold, the global center summary server 200 no longer issues a speed limit command to each CDN node 100. The CDN node 100 no longer issues a speed limit command to each WEB server 110 in the CDN node 100, and the WEB server 110 no longer controls the provided bandwidth value, thereby restoring the user's download speed.

In order to implement the above embodiments, the present application also proposes a CDN node.

6 is a schematic structural diagram of a CDN node according to an embodiment of the present application. As shown in FIG. 6, the CDN node 100 includes: at least one WEB server 110 and intra-node central control in communication with at least one WEB server 110 and global central summary server 200. The server 120, wherein the intra-node central control server 120 includes a first sending module 121, a first receiving module 122, a calculating module 123, a second sending module 124, a second receiving module 125, and a generating module 126.

Specifically, the first sending module 121 is configured to send the traffic information and the domain name information of each CDN node 100 to the global center summary server 200. Specifically, when a user accesses a certain domain name, the user's access request is sent to the WEB server 110 of a specific CDN node 100, and the WEB server 110 returns the user to the user. The resource file required for the domain name. That is, when the user downloads the resource file from a certain WEB server 110, the WEB server 110 counts the number of bytes sent by the WEB server 110 per second to record the downlink traffic of the domain name at the current time. The WEB server 110 summarizes the increments of the domain name and the domain name downlink traffic according to the first preset period, and sends the summary result to the intra-node central control server 120 in the CDN node.

In one embodiment of the present application, the intra-node central control server 120 further includes a second receiving module 125 and a generating module 126. The second receiving module 125 is configured to receive the traffic increment reported by the WEB server 100 for the supported domain name. The generating module 126 is configured to generate traffic information and domain name information corresponding to the CDN node 100 according to the traffic increment and the supported domain name. Specifically, the second receiving module 125 collects the bandwidth of each domain name from each WEB server 110 in the CDN node 100, and calculates the bandwidth value of each domain name in the CDN node 100. That is, after receiving the increment of the domain name and the domain name downlink traffic sent by the WEB server, the second receiving module 125 generates the domain name and the domain name downlink traffic supported by each WEB server 110 according to the second preset period. The aggregation is performed in increments to generate domain name information and corresponding traffic information under the CDN node 100. Then, the first sending module 121 sends the generated domain name information and the corresponding traffic information to the global center summary server 200, whereby the global center summary server 200 can query any domain name according to the domain name information and the corresponding traffic information at any time. Current bandwidth information, or query bandwidth information of any domain name at any CDN node 100.

In an embodiment of the present application, the global center summary server 200 summarizes the traffic information and the domain name information sent by the first sending module 121 of each CDN node, and determines whether the current bandwidth of the domain name is greater than the bandwidth threshold, if the domain name is If the current bandwidth is greater than the bandwidth threshold, the traffic information and domain name information sent by the first sending module 121 of each CDN node 100, the actual bandwidth value provided by each CDN node 100 for the domain name, and the actual domain name according to each CDN node 100. Provide a bandwidth value to generate a speed limit command. Specifically, the global center summary server 200 calculates the bandwidth information of each domain name on each CDN node 100 according to the domain name information and the traffic information summarized by the CDN node 100, and then determines whether the bandwidth information of each domain name exceeds the configured bandwidth. Threshold. If the current bandwidth of a certain domain name exceeds the bandwidth threshold, the bandwidth information of the domain name queried by the global center summary server 200 is used to estimate the bandwidth threshold that each CDN node 100 should actually serve, according to each CDN node 100. The bandwidth information calculates a speed limit threshold for each CDN node 100 and generates a speed limit command. The global center summary server 200 delivers the speed limit command of the domain name to the first receiving module 122 in the CDN node 100, and notifies the first receiving module 122 of the bandwidth value that the domain name should serve under the CDN node 100.

In one embodiment of the present application, if the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node 100 that supports the domain name remains unchanged. Specifically, if the global center summary server 200 determines that the bandwidth information of a certain domain name does not exceed the configured bandwidth threshold, the global center summary server 200 only takes the domain name band. The wide information is used for statistics, and the speed limit command is not issued.

The first receiving module 122 is configured to receive a speed limit command generated by the global center summary server 200 according to the traffic information and the domain name information of each CDN node 100, where the speed limit command includes the actual provided bandwidth value of the corresponding CDN node 100 for the supported domain name. .

The calculation module 123 is configured to calculate a bandwidth value provided by each WEB server 110 within the CDN node 100 for the supported domain name according to the actual provided bandwidth value for the supported domain name. Specifically, after the first receiving module 122 receives the bandwidth value that the domain name should serve under the CDN node 100, the calculating module 123 determines the number of the WEB server 110 serving the domain name in the CDN node 100, and calculates each WEB. The bandwidth value that the server 110 should provide for the domain name.

The second sending module 124 is configured to send the bandwidth value provided by each WEB server 110 in the CDN node 100 to the WEB server 110 for the supported domain name. Specifically, the second sending module 124 sends the bandwidth value that each WEB server 110 should provide to the corresponding WEB server 110.

The WEB server 110 is configured to control according to its own corresponding bandwidth value provided for the supported domain name. Specifically, the WEB server 110 can configure a bandwidth threshold to limit the bandwidth value of the domain name between the bandwidth thresholds. The WEB server 110 adjusts the bandwidth value serving the domain name within the bandwidth threshold, thereby achieving the purpose of controlling the download speed when the user accesses the domain name.

In an embodiment of the present application, the global center summary server 200 generates a speed limit command according to a preset period. When the first receiving module 122 does not receive the speed limit command of the global center summary server 200, the network limit of the WEB server 110 is stopped. speed. Specifically, in the process of limiting the download speed of the user by the WEB server 110 in the CDN node 100, the global center summary server 200 determines that the current bandwidth value of the domain name no longer exceeds the bandwidth as the current bandwidth value of the domain name decreases. The threshold, the global center summary server 200 no longer issues a speed limit command to the first receiving module 122 of each CDN node 100. The second sending module 124 of the CDN node 100 no longer issues a speed limit command to each WEB server 110 in the CDN node 100, and the WEB server 100 no longer controls the provided bandwidth value, thereby restoring the download speed of the user.

The CDN node in the embodiment of the present application aggregates and collects the real-time bandwidth information of the domain name served by the CDN node through data communication with the global center summary server, and the global center summary server sends a rate limit policy to the WEB server in the CDN node. The WEB server performs feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name avoids excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domain names served on the CDN node at the CDN node. Bandwidth resources on.

In order to implement the above embodiments, the present application also proposes a global center summary server.

FIG. 7 is a schematic structural diagram of a global center summary server according to an embodiment of the present application. As shown in FIG. 7, the global center summary server 200 includes a receiving module 210, a generating module 220, and a sending module 230. The generating module 220 includes a summary unit 221, a determining unit 222, a sending unit 223, and a generating unit 224.

Specifically, the receiving module 210 is configured to receive traffic information and domain name information of each CDN node 100. Specifically, when a user accesses a certain domain name, the user's access request is sent to the WEB server 110 of a specific CDN node 100, and the WEB server 110 returns the resource file required for the user to access the domain name. That is, when the user downloads the resource file from a certain WEB server 110, the WEB server 110 counts the number of bytes sent by the WEB server 110 per second to record the downlink traffic of the domain name at the current time. The WEB server 110 summarizes the increments of the domain name and the domain name downlink traffic according to the first preset period, and sends the summary result to the intra-node central control server 120 in the CDN node 110.

In an embodiment of the present application, the intra-node central control server 120 in each CDN node 100 receives the traffic increment reported by the WEB server 110 in the CDN node 100 for the supported domain name, and according to the traffic increment and the supported domain name. The traffic information and the domain name information corresponding to the CDN node 100 are generated. Specifically, the intra-node central control server 120 collects the bandwidth status of each domain name from each WEB server 110 in the CDN node 100, and calculates the bandwidth value of each domain name in the CDN node 100. That is, after receiving the increment of the domain name and the domain name downlink traffic sent by the WEB server 110, the intra-node central control server 120 increases the downlink traffic of the domain name and the domain name supported by each WEB server 110 according to the second preset period. The amount is aggregated to generate domain name information and corresponding traffic information under the CDN node 100. Then, the in-node central control server 120 sends the generated domain name information and the corresponding traffic information to the receiving module 210 of the global center summary server 200, whereby the global center summary server 200 can use the domain name information and the corresponding traffic information at any time. Query the current bandwidth information of any domain name, or query the bandwidth information of any domain name at any CDN node 100.

The generating module 220 is configured to generate a speed limit command according to the traffic information and the domain name information of each CDN node 100, wherein the speed limit command includes an actual provided bandwidth value of the corresponding CDN node 100 for the supported domain name.

In an embodiment of the present application, the generating module 220 includes a summary unit 221, a determining unit 222, a transmitting unit 223, and a generating unit 224. The summary unit 221 is configured to summarize the traffic information and the domain name information of each CDN node 100. The determining unit 222 is configured to determine whether the current bandwidth of the domain name is greater than the bandwidth threshold. The sending unit 223 is configured to: when the current bandwidth of the domain name is greater than the bandwidth threshold, send the actual provided bandwidth value of each CDN node 100 for the domain name according to the traffic information and the domain name information sent by each CDN node 100. The generating unit 224 is configured to generate a speed limit instruction according to an actual provided bandwidth value of each domain name of each CDN node. Specifically, the summary unit 221 calculates the bandwidth information of each domain name on each CDN node 100 according to the domain name information and the traffic information summarized by the CDN node 100, and then the determining unit 222 determines whether the bandwidth information of each domain name exceeds the configured Bandwidth threshold. If the determining unit 222 determines that the current bandwidth of a certain domain name exceeds the bandwidth threshold, the receiving module The bandwidth information of the domain name received by the network 210 is used to estimate the bandwidth threshold that each CDN node 100 should actually serve. The rate limit threshold of each CDN node 100 is calculated according to the bandwidth information served by each CDN node 100, and the generating unit 224 is generated. Generate a speed limit command.

The sending module 230 is configured to send a speed limit instruction to the intra-node central control server in each CDN node 100. Specifically, the sending module 230 sends a speed limit command of the domain name to the intra-node central control server 120 in the CDN node 100, and the sending unit 223 sends the domain name to the intra-node central control server 120 that the domain name should be served under the CDN node 100. Bandwidth value.

In an embodiment of the present application, if the determining unit 222 determines that the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node holding the domain name is unchanged. Specifically, if the determining unit 222 determines that the bandwidth information of a certain domain name does not exceed the configured bandwidth threshold, the generating unit 224 only collects the bandwidth information of the domain name, and the sending module 230 does not send the speed limit command.

Further, after receiving the bandwidth value that the domain name should be served by the CDN node 100 sent by the sending module 230, the intra-node central control server 120 determines the number of the WEB servers 110 serving the domain name in the CDN node 100, and calculates each The bandwidth value that the WEB server 110 should provide for the domain name. The intra-node central control server 120 transmits the bandwidth value that each WEB server 110 should provide to the corresponding WEB server 110. The WEB server 110 can be configured with a bandwidth threshold, and the bandwidth value of the domain name is limited to a bandwidth threshold. The WEB server 110 adjusts the bandwidth value serving the domain name within the bandwidth threshold, thereby achieving the purpose of controlling the download speed when the user accesses the domain name.

In an embodiment of the present application, the generating module 220 generates a speed limit command according to a preset period, and when the node center control server 120 in the CDN node 100 does not receive the speed limit command sent by the sending module 230, stops the CDN node. The WEB server 110 in 100 performs speed limit. Specifically, in the process of limiting the download speed of the user by the WEB server 110 in the CDN node 100, the determination unit 222 determines that the current bandwidth value of the domain name does not exceed the bandwidth threshold, as the current bandwidth value of the domain name decreases. Then, the sending module 230 does not issue a speed limit command to the in-node central control server 120 of each CDN node 100. The intra-node central control server 120 also no longer issues a speed limit command to each WEB server 110 in the CDN node 100, and the WEB server 100 no longer controls the provided bandwidth value, thereby restoring the user's download speed.

The global central summary server of the embodiment of the present invention aggregates and counts the real-time bandwidth information of the domain name served by the CDN node through the data communication with the WEB server and the central control server in the node, and sends a speed limit to the WEB server. The policy enables the WEB server to perform feedback control on the download speed of the user, thereby limiting the global bandwidth value of the domain name on the CDN node, and ensuring that the bandwidth value of the domain name under the CDN node does not exceed the configured bandwidth threshold. Therefore, the bandwidth value of the domain name served on the CDN node is controllable, and the domain name is prevented from occupying excessive bandwidth resources of the CDN node due to some unpredictable problems, and affects other domains of the service on the CDN node. The bandwidth resource on the CDN node.

It should be understood that portions of the application can be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

In the present application, the terms "installation", "connected", "connected", and the like are to be understood broadly, and may be either a fixed connection or a detachable connection, or Integral; may be mechanically connected or electrically connected; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

While the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the present application. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A speed limit control method for a CDN network system, characterized in that the CDN network system comprises a plurality of CDN nodes and a global central summary server communicating with the plurality of CDN nodes, each of the CDN nodes including at least one WEB And a server and an intra-node central control server in communication with the at least one WEB server and the global hub summary server, the method comprising the steps of:

The intra-node central control server in each CDN node sends the traffic information and the domain name information of each CDN node to the global central summary server, so that the global central summary server according to the traffic information of each CDN node Generating a rate limit command with the domain name information, wherein the speed limit command includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name;

Receiving, by the central control server in the node, the speed limit command, and calculating, according to the actual bandwidth value provided for the supported domain name, a bandwidth value provided by each WEB server in the CDN node for the supported domain name ;as well as

The intra-node central control server sends a bandwidth value provided by each WEB server in the CDN node for the supported domain name to each WEB server, so that each WEB server according to its own corresponding Controlling the bandwidth value provided by the supported domain name.
The method for controlling a rate limit of a CDN network system according to claim 1, further comprising:

An intra-node central control server in each of the CDN nodes receives a traffic increment reported by the WEB server in the CDN node for the supported domain name, and generates the information according to the traffic increment and the supported domain name. The traffic information and domain name information corresponding to the CDN node.
The method for controlling a rate limit of a CDN network system according to claim 1, further comprising:

The global center summary server summarizes the traffic information and the domain name information sent by each of the CDN nodes, and determines whether the current bandwidth of the domain name is greater than the bandwidth threshold;

If the current bandwidth of the domain name is greater than the bandwidth threshold, the global center summary server provides a bandwidth value for each domain name of the CDN node according to the traffic information and domain name information sent by each of the CDN nodes; as well as

The global center summary server generates the speed limit instruction according to an actual provided bandwidth value of the domain name for each of the CDN nodes.
The method for controlling a rate limit of a CDN network system according to claim 3, further comprising:

If the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node supporting the domain name is kept unchanged.
The speed limit control method of the CDN network system according to claim 1, wherein the global center summary server generates the speed limit command according to a preset period, the method further comprising:

After the in-node central control server in the CDN node does not receive the speed limit command of the global center summary server, stop limiting the speed of the WEB server in the CDN node.
A speed limit control method for a CDN network system, characterized in that the CDN network system comprises a plurality of CDN nodes and a global central summary server communicating with the plurality of CDN nodes, each of the CDN nodes including at least one WEB And a server and an intra-node central control server in communication with the at least one WEB server and the global hub summary server, the method comprising the steps of:

The global center summary server receives the traffic information and the domain name information of each CDN node, and generates a speed limit command according to the traffic information and the domain name information of each CDN node, where the speed limit instruction includes a corresponding CDN node for the Support the actual provided bandwidth value of the domain name;

Transmitting, by the global center summary server, the speed limit instruction to an intra-node central control server in the CDN node, so that the central control server in the node calculates the bandwidth value according to the actual provided bandwidth value for the supported domain name. a bandwidth value provided by each WEB server within the CDN node for the supported domain name, and a bandwidth value provided by each WEB server in the CDN node for the supported domain name is sent to each WEB And a server, so that each of the WEB servers controls according to a bandwidth value provided by the corresponding WEB for the supported domain name.
The method for controlling a rate limit of a CDN network system according to claim 6, further comprising:

The global center summary server summarizes the traffic information and the domain name information sent by each of the CDN nodes, and determines whether the current bandwidth of the domain name is greater than the bandwidth threshold;

And if the current bandwidth of the domain name is greater than the bandwidth threshold, the global center summary server sends, according to the traffic information and the domain name information sent by each of the CDN nodes, an actual provided bandwidth value of each of the CDN nodes for the domain name. ;as well as

The global center summary server generates the speed limit instruction according to an actual provided bandwidth value of the domain name for each of the CDN nodes.
The method for controlling a rate limit of a CDN network system according to claim 7, further comprising:

If the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node supporting the domain name is kept unchanged.
A CDN network system, characterized in that the CDN network system comprises a plurality of CDN nodes and a global central summary server in communication with the plurality of CDN nodes, each of the CDN nodes comprising at least one WEB server and An intra-node central control server in which at least one WEB server communicates with the global central summary server, wherein

The global center summary server is configured to generate a rate limit command according to the traffic information and the domain name information of each CDN node, where the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name;

An intra-node central control server in each CDN node is configured to send traffic information and domain name information of each of the CDN nodes to the global center summary server, and receive the speed limit instruction, and according to the supported domain name Actually providing a bandwidth value, calculating a bandwidth value provided by each WEB server in the CDN node for the supported domain name, and providing each WEB server in the CDN node for the supported domain name The bandwidth value is sent to each WEB server;

Each WEB server is configured to control according to its own corresponding bandwidth value provided for the supported domain name.
The CDN network system according to claim 9, wherein the in-node central control server in each of the CDN nodes is further configured to receive the traffic increase reported by the WEB server in the CDN node for the supported domain name. And generating, according to the traffic increment and the supported domain name, the traffic information and domain name information corresponding to the CDN node.
The CDN network system according to claim 9, wherein the global central summary server is further configured to summarize traffic information and domain name information sent by each of the CDN nodes, and determine whether a current bandwidth of the domain name is greater than a bandwidth threshold, and when the current bandwidth of the domain name is greater than the bandwidth threshold, according to traffic information and domain name information sent by each of the CDN nodes, each of the CDN nodes provides a bandwidth value for the domain name, and according to Each of the CDN nodes generates the rate limit instruction for an actual provided bandwidth value of the domain name.
The CDN network system according to claim 11, wherein the global central summary server is further configured to:

When the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node supporting the domain name is kept unchanged.
The CDN network system according to claim 9, wherein the global center summary server generates the speed limit command according to a preset period, and the node center control server in the CDN node is further configured to:

When the speed limit command of the global center summary server is not received, the speed limit of the WEB server in the CDN node is stopped.
A CDN node, wherein the CDN node comprises at least one WEB server and an intra-node central control server in communication with the at least one WEB server and a global central summary server, wherein the intra-node central control server comprises:

a first sending module, configured to send, to the global central summary server, traffic information and domain name information of each CDN node;

a first receiving module, configured to receive, according to the traffic of each of the CDN nodes, the global center summary server a speed limit instruction generated by the information and the domain name information, wherein the speed limit instruction includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name;

a calculating module, configured to calculate, according to the actual provided bandwidth value for the supported domain name, a bandwidth value provided by each WEB server in the CDN node for the supported domain name;

a second sending module, configured to send, to the WEB server, a bandwidth value provided by each WEB server in the CDN node for the supported domain name;

The WEB server is configured to control according to a bandwidth value provided by the corresponding domain name for the supported domain name.
The CDN node according to claim 14, wherein the intra-node central control server further comprises:

a second receiving module, configured to receive a traffic increment reported by the WEB server for the supported domain name;

And a generating module, configured to generate, according to the traffic increment and the supported domain name, the traffic information and domain name information corresponding to the CDN node.
The CDN node according to claim 14, wherein the global center summary server generates the speed limit instruction according to a preset period, when the first receiving module does not receive the global center summary server When the speed limit command is issued, the speed limit of the WEB server is stopped.
A global center summary server, wherein the global center summary server is in communication with a plurality of CDN nodes, each of the CDN nodes including at least one WEB server and the at least one WEB server and the global center summary server The intra-node central control server of the communication, the global central summary server includes:

a receiving module, configured to receive traffic information and domain name information of each of the CDN nodes;

a generating module, configured to generate a rate limit command according to the traffic information and domain name information of each CDN node, where the speed limit command includes an actual provided bandwidth value of the corresponding CDN node for the supported domain name;

And a sending module, configured to send the speed limit instruction to an intra-node central control server in each of the CDN nodes.
The global central summary server according to claim 17, wherein the generating module comprises:

a summary unit, configured to summarize traffic information and domain name information of each of the CDN nodes;

a determining unit, configured to determine whether a current bandwidth of the domain name is greater than a bandwidth threshold;

a sending unit, configured to: when the current bandwidth of the domain name is greater than the bandwidth threshold, send, according to the traffic information and the domain name information sent by each of the CDN nodes, an actual provided bandwidth value of each of the CDN nodes for the domain name; as well as

And a generating unit, configured to generate the speed limit instruction according to an actual provided bandwidth value of the domain name by each of the CDN nodes.
The global center summary server according to claim 18, wherein if the determining unit determines that the current bandwidth of the domain name is less than the bandwidth threshold, the bandwidth of each CDN node of the domain name is kept unchanged.