CN106034083A

CN106034083A - CDN system and rate-limiting control method thereof, CND node, and server

Info

Publication number: CN106034083A
Application number: CN201510109232.5A
Authority: CN
Inventors: 袁茁
Original assignee: Alibaba Group Holding Ltd
Current assignee: Alibaba Group Holding Ltd
Priority date: 2015-03-12
Filing date: 2015-03-12
Publication date: 2016-10-19
Anticipated expiration: 2035-03-12
Also published as: WO2016141820A1; CN106034083B

Abstract

The application provides a content delivery network (CDN) system and a rate-limiting control method thereof, a CDN node, and a server. The method comprises: an in-node central control server in each CDN node sends flow information and domain name information of each CDN node to a global center gathering server and the global center gathering server generates a rate limiting instruction that includes a practical providing bandwidth value of the corresponding CDN node for a supported domain name based on the flow information and the domain name information; the in-node central control server receives the rate limiting instruction and calculates a bandwidth value that is provided by each WEB server for the supported domain name in the CDN node according to the practical providing bandwidth value; and the in-node central control server sends the width value that is provided by each WEB server in the CDN node for the supported domain name to each WEB server, so that the each WEB server carries out controlling based on the width value. With the method, a problem that the domain name occupies too many bandwidth resources of the CDN node can be solved.

Description

CDN system and speed-limiting control method, CDN node and server

Technical field

The application relates to content distributing network technical field, particularly relate to a kind of CDN (Content Delivery Network, Content distributing network) network system and speed-limiting control method, CDN node and server.

Background technology

As it is shown in figure 1, the framework of CDN system includes multiple CDN fringe node, when user asks certain of CDN During one resource file (such as Web service, video), the request of user can be connected to certain in certain CDN fringe node On one Web server.At present, user can be downloaded for request and carry out speed limit by Web server, but the target of speed limit All the time it is the user downloading resource file for request, is only that the resource file to user's request carries out speed limit download, not The problem that certain domain name total bandwidth on CDN exceedes configuration threshold value can be solved.If it is to say, accessing the use of certain domain name Family is the most, and shared by this domain name, the bandwidth of CDN is the biggest, thus have impact on the Web server on CDN is other territory The bandwidth that name is provided.

Application content

One of technical problem that the application is intended to solve in correlation technique the most to a certain extent.

To this end, the first of the application purpose is to propose the speed-limiting control method of a kind of CDN system, the method is real Show the bandwidth value to the domain name serviced in CDN node controlled, it is to avoid domain name is due to some unpredictable problem Take the bandwidth resources that CDN node is too much, affect in CDN node service other domain name in CDN node Bandwidth resources.

Second purpose of the application is to propose the speed-limiting control method of a kind of CDN system.

3rd purpose of the application is to propose a kind of CDN system.

4th purpose of the application is to propose a kind of CDN node.

5th purpose of the application is that proposing a kind of Global center collects server.

For reaching above-mentioned purpose, the application first aspect embodiment proposes the speed-limiting control method of a kind of CDN system, institute State CDN system and include that multiple CDN node and the Global center communicated with the plurality of CDN node collect server, Each described CDN node include at least one WEB server and with at least one WEB server described and the described overall situation Central control server in the node of server communication is collected at center, said method comprising the steps of: in each CDN node Node in central control server to described Global center collect server send described each CDN node flow information And domain-name information, so that described Global center collects server according to the flow information of described each CDN node and domain-name information Generation speed limit instructs, and wherein, the instruction of described speed limit includes the corresponding CDN node actual offer bandwidth value for supported domain name； In described node, central control server receives the instruction of described speed limit, and according to the described actual offer band for supported domain name Width values, calculates the bandwidth value that each WEB server in described CDN node is provided for described supported domain name；With And in described node central control server by each WEB server in described CDN node for described supported domain name The bandwidth value provided sends to described each WEB server, so that described each WEB server is according to self correspondence The bandwidth value provided for described supported domain name is controlled.

The speed-limiting control method of the CDN system of the embodiment of the present application, is controlled by center in WEB server, node Control server and Global center collect the data communication of server, the real-time bandwidth information of domain name serviced to CDN node Carry out collecting and adding up, and collected server by Global center and issue speed limit strategy to WEB server so that WEB Server carries out feedback control for the speed of download of user, thus limits domain name bandwidth of the overall situation in CDN node Value, it is ensured that under CDN node, the bandwidth value of domain name is without departing from the bandwidth threshold of configuration.Hereby it is achieved that CDN is saved The bandwidth value of the domain name serviced on point is controlled, it is to avoid domain name takies CDN node due to some unpredictable problems Too much bandwidth resources, affect the bandwidth resources in CDN node of other domain name of service in CDN node.

For reaching above-mentioned purpose, the application second aspect embodiment proposes the speed-limiting control method of a kind of CDN system, Described CDN system includes that multiple CDN node and the Global center communicated with the plurality of CDN node collect clothes Business device, each described CDN node include at least one WEB server and with at least one WEB server described With central control server in the node that described Global center collects server communication, said method comprising the steps of: Described Global center collects server and receives flow information and the domain-name information of each CDN node, and according to described each The flow information of CDN node and domain-name information generate speed limit instruction, and wherein, the instruction of described speed limit includes corresponding CDN Node is for the actual offer bandwidth value of supported domain name；And described Global center collects server and saves to described CDN In node in point, central control server sends the instruction of described speed limit, so that central control server root in described node According to the described actual offer bandwidth value for supported domain name, calculate each WEB server in described CDN node The bandwidth value provided for described supported domain name, and by each WEB server in described CDN node for The bandwidth value that described supported domain name is provided sends to described each WEB server, so that described each WEB clothes Business device is controlled according to the bandwidth value provided for described supported domain name of self correspondence.

For reaching above-mentioned purpose, the application third aspect embodiment proposes a kind of CDN system, described CDN System includes that multiple CDN node and the Global center communicated with the plurality of CDN node collect server, Mei Gesuo State CDN node include at least one WEB server and with at least one WEB server described and the described overall situation The heart collects central control server in the node of server communication, and wherein, described Global center collects server for root Flow information and domain-name information according to each CDN node generate speed limit instruction, and wherein, the instruction of described speed limit includes correspondence CDN node is for the actual offer bandwidth value of supported domain name；In node in each CDN node, center controls clothes Business device sends flow information and the domain-name information of described each CDN node for collecting server to described Global center, And receive the instruction of described speed limit, and according to the described actual offer bandwidth value for supported domain name, calculate described CDN The bandwidth value that each WEB server in node is provided for described supported domain name, and by described CDN node The bandwidth value that interior each WEB server is provided for described supported domain name sends to each WEB server； And described each WEB server is for the bandwidth value provided for described supported domain name according to self correspondence It is controlled.

The CDN system of the embodiment of the present application, by central control server and the overall situation in WEB server, node The data communication of server is collected at center, and the real-time bandwidth information of domain name serviced to CDN node collects and adds up, And collected server by Global center and issue speed limit strategy to WEB server so that WEB server is for user's Speed of download carries out feedback control, thus limits domain name bandwidth value of the overall situation in CDN node, it is ensured that CDN saves The bandwidth value of the lower domain name of point is without departing from the bandwidth threshold of configuration.Hereby it is achieved that to the domain name serviced in CDN node Bandwidth value controlled, it is to avoid domain name takies, due to some unpredictable problems, the bandwidth resources that CDN node is too much, Affect the bandwidth resources in CDN node of other domain name of service in CDN node.

For reaching above-mentioned purpose, the application fourth aspect embodiment proposes a kind of CDN node, and described CDN node includes At least one WEB server and collect the joint of server communication with at least one WEB server described and Global center Central control server in point, wherein, in described node, central control server includes: the first sending module, is used for Collect server to described Global center and send flow information and the domain-name information of described each CDN node；First receives Module, collects server according to the flow information of described each CDN node and domain name letter for receiving described Global center The speed limit instruction that breath generates, wherein, the instruction of described speed limit includes that corresponding CDN node carries for the actual of supported domain name For bandwidth value；Computing module, for according to the described actual offer bandwidth value for supported domain name, calculates described CDN The bandwidth value that each WEB server in node is provided for described supported domain name；Second sending module, uses In the bandwidth value that each WEB server in described CDN node is provided for described supported domain name is sent extremely Described WEB server；And described WEB server for according to self correspondence for described supported domain name institute The bandwidth value provided is controlled.

The CDN node of the embodiment of the present application, by collecting the data communication of server, to CDN node with Global center The real-time bandwidth information of serviced domain name carries out collecting and adding up, and is collected server in CDN node by Global center WEB server issues speed limit strategy so that WEB server carries out feedback control for the speed of download of user, from And limiting domain name bandwidth value of the overall situation in CDN node, it is ensured that under CDN node, the bandwidth value of domain name is without departing from joining The bandwidth threshold put.Hereby it is achieved that controlled to the bandwidth value of the domain name serviced in CDN node, it is to avoid domain name Owing to some unpredictable problem takies the bandwidth resources that CDN node is too much, affect in CDN node its of service The bandwidth resources in CDN node of its domain name.

For reaching above-mentioned purpose, the application the 5th aspect embodiment proposes a kind of Global center and collects server, the described overall situation Server and multiple CDN node communications are collected in center, and each described CDN node includes at least one WEB service Device and in collect the node of server communication with at least one WEB server described and described Global center center control Server, described Global center collects server and includes: receiver module, for receiving the stream of each described CDN node Amount information and domain-name information；Generation module, raw for the flow information according to described each CDN node and domain-name information Becoming speed limit instruction, wherein, the instruction of described speed limit includes the corresponding CDN node actual offer bandwidth for supported domain name Value；And sending module, in the node in each described CDN node, central control server sends described limit Speed instruction.

The Global center of the embodiment of the present application collects server, by with WEB server in CDN node and node in The heart controls the data communication of server, and the real-time bandwidth information of domain name serviced to CDN node collects and adds up, And issue speed limit strategy to WEB server so that WEB server carries out feedback control for the speed of download of user, Thus limit domain name in CDN node the overall situation bandwidth value, it is ensured that under CDN node the bandwidth value of domain name without departing from The bandwidth threshold of configuration.Hereby it is achieved that controlled to the bandwidth value of the domain name serviced in CDN node, it is to avoid territory Name takies, due to some unpredictable problem, the bandwidth resources that CDN node is too much, affects service in CDN node The bandwidth resources in CDN node of other domain name.

Aspect and advantage that the application adds will part be given in the following description, and part will become bright from the following description Aobvious, or recognized by the practice of the application.

Accompanying drawing explanation

The application above-mentioned and/or that add aspect and advantage will be apparent from from the following description of the accompanying drawings of embodiments With easy to understand, wherein:

Fig. 1 is the schematic diagram of CDN system in correlation technique；

Fig. 2 is the flow chart of the speed-limiting control method of the CDN system of one embodiment of the application；

Fig. 3 is the schematic diagram of the CDN system of one embodiment of the application；

Fig. 4 is the flow chart of the speed-limiting control method of the CDN system of one embodiment of the application；

Fig. 5 is the structural representation of the CDN system of one embodiment of the application；

Fig. 6 is the structural representation of the CDN node of one embodiment of the application；And

Fig. 7 is the structural representation that the Global center of one embodiment of the application collects server.

Detailed description of the invention

Embodiments herein is described below in detail, and the example of described embodiment is shown in the drawings, the most identical Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing The embodiment stated is exemplary, it is intended to be used for explaining the application, and it is not intended that restriction to the application.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or hidden One or more this feature are included containing ground.In the description of the present application, " multiple " are meant that two or more, Unless otherwise expressly limited specifically.

In flow chart or at this, any process described otherwise above or method description are construed as, and represent and include one Or the module of code, fragment or the part of the executable instruction of the more step for realizing specific logical function or process, And the scope of the preferred implementation of the application includes other realization, wherein can not press order that is shown or that discuss, Including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be by the application's Embodiment person of ordinary skill in the field understood.

Fig. 2 is the flow chart of the speed-limiting control method of the CDN system of one embodiment of the application, and Fig. 3 is this Shen Please the schematic diagram of CDN system of an embodiment.

As in figure 2 it is shown, the speed-limiting control method of CDN system includes:

S101, in the node in each CDN node central control server to Global center collect server send each The flow information of CDN node and domain-name information, so that Global center collects the server stream according to each CDN node Amount information and domain-name information generate speed limit instruction, and wherein, speed limit instruction includes that corresponding CDN node is for supported domain name Actual offer bandwidth value.

Specifically, as it is shown on figure 3, CDN system includes multiple CDN node and leads to multiple CDN node The Global center of letter collects server.Wherein, each CDN node includes at least one WEB server and with extremely A few WEB server and Global center collect central control server in the node of server communication.

When user accesses certain domain name, the access request of user can send the WEB to certain concrete CDN node On server, WEB server can return to user and access resource file required during this domain name.It is to say, work as When user downloads resource file from certain WEB server, WEB server can add up domain name by this WEB server The byte number sent each second, to record the downlink traffic of this domain name current time.WEB server is according to first The increment of domain name and domain name downlink traffic is collected by predetermined period, and is sent to by summarized results in this CDN node Node in central control server.

In an embodiment of the application, in the node in each CDN node, central control server receives CDN The flow increment for supported domain name that in node, WEB server reports, and according to flow increment and supported domain name Generate flow information corresponding to CDN node and domain-name information.Specifically, in node central control server from CDN In node, each WEB server collects the bandwidth situation of each domain name, calculates each domain name in CDN node Bandwidth value.It is to say, central control server is under the domain name receiving WEB server transmission and domain name in node After the increment of row flow, the domain name each WEB server supported according to the second predetermined period and domain name downstream The increment of amount collects, and generates the domain-name information under this CDN node and corresponding flow information.Then, in node The domain-name information of generation and corresponding flow information are sent to Global center and collect server by central control server, by This, Global center collects server and can inquire arbitrarily according to domain-name information and corresponding flow information at any time The current bandwidth information of domain name, or inquire the bandwidth information of any domain name meaning in office CDN node.

In an embodiment of the application, Global center collects the flow information that each CDN node is sent by server Collect with domain-name information, and determine whether that the current bandwidth of domain name is more than bandwidth threshold, if domain name is current Band is wider than bandwidth threshold, then the flow information sent according to each CDN node and each CDN node of domain-name information For the actual offer bandwidth value of domain name, and generate for the actual offer bandwidth value of domain name according to each CDN node Speed limit instructs.Specifically, Global center collects domain-name information and the flow information that server collects according to CDN node Calculate each domain name bandwidth information in each CDN node, then judge whether the bandwidth information of each domain name surpasses Cross the bandwidth threshold of configuration.If the current bandwidth having certain domain name has exceeded bandwidth threshold, then pass through Global center Collect server lookup to the bandwidth information of this domain name estimate the actual bandwidth threshold that should service of each CDN node, The bandwidth information serviced according to each CDN node calculates the speed limit threshold value of each CDN node, generates limit simultaneously Speed instruction.Global center collects central control server in server node in CDN node and issues the limit of this domain name Speed instruction, and notify the bandwidth value that this domain name of central control server should service under this CDN node in node.

In an embodiment of the application, if the current bandwidth of domain name is less than bandwidth threshold, then keep supporting domain name The bandwidth of each CDN node constant.Specifically, if Global center collects server judges the band of certain domain name Wide information is not less than the bandwidth threshold of configuration, then Global center collects server and only unites the bandwidth information of this domain name Meter, does not issue speed limit instruction.

S102, in node, central control server receives speed limit instruction, and according to the actual offer band for supported domain name Width values, calculates the bandwidth value that each WEB server in CDN node is provided for supported domain name.

Specifically, in node central control server receive this domain name in CDN node under the bandwidth value that should service Afterwards, it is judged that service the quantity of the WEB server of this domain name in this CDN node, calculate each WEB service The bandwidth value that this domain name should be provided by device.

S103, in node central control server by each WEB server in CDN node for supported domain name The bandwidth value that thered is provided sends to each WEB server so that each WEB server according to self correspondence for The bandwidth value that supported domain name is provided is controlled.

Specifically, in node central control server by each WEB server it would be desirable to provide bandwidth value be sent to correspondence WEB server.Wherein, WEB server can configure a bandwidth threshold, is limited by the bandwidth value of this domain name Between bandwidth threshold.WEB server adjusts the bandwidth value servicing this domain name in this bandwidth threshold, thus reaches control The purpose of speed of download when user processed accesses this domain name.

In an embodiment of the application, Global center collects server and generates speed limit instruction according to predetermined period, when After in node in CDN node, central control server does not receives the speed limit instruction that Global center collects server, Stop the WEB server in CDN node is carried out speed limit.Specifically, the WEB service in CDN node During device carries out speed limit to the speed of download of user, along with the current bandwidth value of domain name declines, Global center collects Server judges that the current bandwidth value of this domain name no longer exceeds bandwidth threshold, then Global center collects server no longer to respectively Individual CDN node issues speed limit instruction.Under the CDN node the most no longer WEB server of each in CDN node Sending out speed limit instruction, the bandwidth value provided no longer is controlled by WEB server, thus recovers the speed of download of user.

In order to realize above-described embodiment, the application also proposes the speed-limiting control method of a kind of CDN system.

Fig. 4 is the flow chart of the speed-limiting control method of the CDN system of one embodiment of the application, as shown in Figure 4, The speed-limiting control method of CDN system includes:

S301, Global center collects server and receives flow information and the domain-name information of each CDN node, and according to often The flow information of individual CDN node and domain-name information generate speed limit instruction, and wherein, speed limit instruction includes corresponding CDN joint Point is for the actual offer bandwidth value of supported domain name.

In an embodiment of the application, Global center collects the flow information that each CDN node is sent by server Collect with domain-name information, and determine whether that the current bandwidth of domain name is more than bandwidth threshold, if domain name is current Band is wider than bandwidth threshold, then the flow information sent according to each CDN node and each CDN node of domain-name information For the actual offer bandwidth value of domain name, and generate for the actual offer bandwidth value of domain name according to each CDN node Speed limit instructs.Specifically, Global center collects domain-name information and the flow information that server collects according to CDN node Calculate each domain name bandwidth information in each CDN node, then judge whether the bandwidth information of each domain name surpasses Cross the bandwidth threshold of configuration.If the current bandwidth having certain domain name has exceeded bandwidth threshold, then pass through Global center Collect server lookup to the bandwidth information of this domain name estimate the actual bandwidth threshold that should service of each CDN node, The bandwidth information serviced according to each CDN node calculates the speed limit threshold value of each CDN node, generates limit simultaneously Speed instruction.

S302, in Global center collects server node in CDN node, central control server sends speed limit instruction, So that central control server is according to the actual offer bandwidth value for supported domain name in node, calculate in CDN node The bandwidth value that provided for supported domain name of each WEB server, and by each WEB in CDN node The bandwidth value that server is provided for supported domain name sends to each WEB server, so that each WEB service Device is controlled according to the bandwidth value provided for supported domain name of self correspondence.

Specifically, in Global center collects server node in CDN node, central control server issues this domain name Speed limit instruction, and notify the bandwidth value that this domain name of central control server should service under this CDN node in node.

In node central control server receive this domain name in CDN node under after the bandwidth value that should service, sentence Servicing the quantity of the WEB server of this domain name in this CDN node disconnected, calculating each WEB server should be right The bandwidth value that this domain name provides.In node central control server by each WEB server it would be desirable to provide bandwidth value send out Give the WEB server of correspondence.Wherein, WEB server can configure a bandwidth threshold, by the band of this domain name Width values is limited between bandwidth threshold.WEB server adjusts the bandwidth value servicing this domain name in this bandwidth threshold, from And reach to control the purpose of speed of download when user accesses this domain name.

In order to realize above-described embodiment, the application also proposes a kind of CDN system.

Fig. 5 is the structural representation of the CDN system of one embodiment of the application, as it is shown in figure 5, CDN System includes: multiple CDN node 100 and the Global center communicated with multiple CDN node collect server 200.Its In, each CDN node 100 include at least one WEB server 110 and with at least one WEB server 110 Central control server 120 in the node that server 200 communicates is collected with Global center.

Specifically, in the node in each CDN node 100, central control server 120 is used for collecting to Global center Server 200 sends flow information and the domain-name information of each CDN node 100.Specifically, certain is accessed as user During individual domain name, the access request of user can send to the WEB server 110 of certain concrete CDN node 100, WEB server 110 can return to user and access resource file required during this domain name.It is to say, when user from When downloading resource file in certain WEB server 110, WEB server 10 can add up domain name by this WEB service The byte number that device 110 sends each second, to record the downlink traffic of this domain name current time.WEB server 110 According to the first predetermined period, the increment of domain name and domain name downlink traffic is collected, and summarized results is sent to this Central control server 120 in node in CDN node 100.

In an embodiment of the application, in the node in each CDN node 100, central control server 120 is also For receiving the flow increment for supported domain name that WEB server 110 in CDN node 100 reports, and root Flow information and the domain-name information of CDN node 100 correspondence is generated according to flow increment and supported domain name.Specifically, In node, central control server 120 each WEB server 110 in CDN node 100 collects each domain name Bandwidth situation, calculates each domain name bandwidth value in CDN node 100.It is to say, center controls in node Server 120 is after receiving the increment of domain name that WEB server 110 sends and domain name downlink traffic, according to the Domain name and the increment of domain name downlink traffic that each WEB server 110 is supported by two predetermined period collect, raw Become the domain-name information under this CDN node 100 and corresponding flow information.Then, central control server 120 in node The domain-name information of generation and corresponding flow information are sent to Global center and collect server 200.Thus, Global center Collect server 200 and can inquire working as of any domain name according to domain-name information and corresponding flow information at any time Front bandwidth information, or inquire the bandwidth information of any domain name meaning in office CDN node 100.

Global center collects server 200 and generates for the flow information according to each CDN node 100 and domain-name information Speed limit instructs, and wherein, speed limit instruction includes the corresponding CDN node 100 actual offer bandwidth value for supported domain name.

In an embodiment of the application, Global center collects server 200 and is additionally operable to each CDN node 100 The flow information and the domain-name information that send collect, and determine whether that the current bandwidth of domain name is more than bandwidth threshold, When the current bandwidth of domain name is more than bandwidth threshold, the flow information sent according to each CDN node 100 and domain name letter Each CDN node 100 actual offer bandwidth value for domain name is provided, and according to each CDN node 100 for The actual offer bandwidth value of domain name generates speed limit instruction.Specifically, Global center collects server 200 according to CDN Domain-name information and flow information that node 100 collects calculate each domain name bandwidth letter in each CDN node 100 Breath, then judges whether the bandwidth information of each domain name has exceeded the bandwidth threshold of configuration.If there being working as of certain domain name Front bandwidth has exceeded bandwidth threshold, then collected the bandwidth information of this domain name that server 200 inquires by Global center Estimate the actual bandwidth threshold that should service of each CDN node 100, serviced according to each CDN node 100 Bandwidth information calculate the speed limit threshold value of each CDN node 100, generate speed limit instruction simultaneously.Global center collects In the server 200 node in CDN node 100, central control server 120 issues the speed limit instruction of this domain name, And notify the bandwidth value that this domain name of central control server 120 should service for 100 times in node in this CDN node.

In an embodiment of the application, Global center collects server 200 and is additionally operable to when the current bandwidth of domain name is little When bandwidth threshold, keep supporting that the bandwidth of each CDN node 100 of domain name is constant.Specifically, if overall Center is collected server 200 and is judged the bandwidth information bandwidth threshold not less than configuration of certain domain name, then Global center converges The bandwidth information of this domain name is only added up by director server 200, does not issue speed limit instruction.

In node in each CDN node 100 central control server 120 receive speed limit instruction, and according to for The actual offer bandwidth value of supported domain name, calculates each WEB server 110 in CDN node 100 for institute Support the bandwidth value that domain name is provided, and by each WEB server 110 in CDN node 100 for being supported The bandwidth value that domain name is provided sends to each WEB server 110.Specifically, central control server in node 120 are receiving this domain name after the bandwidth value that CDN node should service for 100 times, it is judged that this CDN node 100 The quantity of the WEB server 110 of interior this domain name of service, calculating each WEB server 110 should be to this domain name The bandwidth value provided.In node central control server 120 by each WEB server 110 it would be desirable to provide bandwidth value It is sent to the WEB server 110 of correspondence.

Each WEB server 110 is controlled for the bandwidth value provided for supported domain name according to self correspondence System.Specifically, WEB server 110 can configure a bandwidth threshold, and the bandwidth value of this domain name is limited in band Between wide threshold value.WEB server 110 adjusts the bandwidth value servicing this domain name in this bandwidth threshold, thus reaches control The purpose of speed of download when user processed accesses this domain name.

In an embodiment of the application, Global center collects server 200 and generates speed limit instruction according to predetermined period, In node in CDN node 100, central control server 120 is additionally operable to not receive Global center and collects server When the speed limit of 200 instructs, stop the WEB server 110 in CDN node 100 is carried out speed limit.Specifically, During WEB server 110 in CDN node 100 carries out speed limit to the speed of download of user, along with territory The current bandwidth value of name declines, and Global center collects server 200 and judges that the current bandwidth value of this domain name is no longer beyond band Wide threshold value, then Global center collects server 200 and no longer issues speed limit instruction to each CDN node 100.CDN Node 100 the most no longer each WEB server 110 in CDN node 100 issues speed limit instruction, and WEB takes The bandwidth value provided no longer is controlled by business device 110, thus recovers the speed of download of user.

In order to realize above-described embodiment, the application also proposes a kind of CDN node.

Fig. 6 is the structural representation of the CDN node of one embodiment of the application, as shown in Figure 6, CDN node 100 Including: at least one WEB server 110 and collect service with at least one WEB server 110 and Global center Central control server 120 in the node of device 200 communication, wherein, in node, central control server 120 includes first Sending module the 121, first receiver module 122, computing module the 123, second sending module the 124, second receiver module 125 and generation module 126.

Specifically, the first sending module 121 sends each CDN node 100 for collecting server 200 to Global center Flow information and domain-name information.Specifically, when user accesses certain domain name, the access request of user can send To the WEB server 110 of certain concrete CDN node 100, WEB server 110 can return to user and visit Ask resource file required during this domain name.It is to say, when user downloads resource from certain WEB server 110 During file, WEB server 110 can add up the byte number that domain name is sent each second by this WEB server 110, To record the downlink traffic of this domain name current time.WEB server 110 according to the first predetermined period to domain name and domain name The increment of downlink traffic collects, and the center in the node in this CDN node that is sent to by summarized results controls service Device 120.

In an embodiment of the application, in node, central control server 120 also includes the second receiver module 125 With generation module 126.Wherein, the second receiver module 125 for receive that WEB server 100 reports for being propped up Hold the flow increment of domain name.Generation module 126 is for generating CDN node 100 according to flow increment and supported domain name Corresponding flow information and domain-name information.Specifically, the second receiver module 125 in CDN node 100 each WEB server 110 collects the bandwidth situation of each domain name, calculates each domain name band in CDN node 100 Width values.It is to say, the second receiver module 125 is receiving domain name and the domain name downlink traffic that WEB server sends Increment after, the domain name that each WEB server 110 is supported by generation module 126 according to the second predetermined period and The increment of domain name downlink traffic collects, and generates the domain-name information under this CDN node 100 and corresponding flow information. Then, the domain-name information of generation and corresponding flow information are sent to Global center and collect clothes by the first sending module 121 Business device 200, thus, Global center collects server 200 can be at any time according to domain-name information and corresponding flow Information inquiry is to the current bandwidth information of any domain name, or inquires the band of any domain name meaning in office CDN node 100 Wide information.

In an embodiment of the application, Global center collects the server 200 first transmission to each CDN node Flow information and domain-name information that module 121 sends collect, and determine whether that the current bandwidth of domain name is more than band Wide threshold value, if the current bandwidth of domain name is more than bandwidth threshold, then according to the first transmission mould of each CDN node 100 Flow information that block 121 sends and each CDN node of domain-name information 100 for the actual offer bandwidth value of domain name, with And instruct for the actual offer bandwidth value generation speed limit of domain name according to each CDN node 100.Specifically, the overall situation Domain-name information that server 200 collects is collected at center according to CDN node 100 and flow information calculates each domain name and exists Bandwidth information in each CDN node 100, then judges whether the bandwidth information of each domain name has exceeded the band of configuration Wide threshold value.If the current bandwidth having certain domain name has exceeded bandwidth threshold, then collect server 200 by Global center The bandwidth information of this domain name inquired estimates the actual bandwidth threshold that should service of each CDN node 100, according to The bandwidth information that each CDN node 100 is serviced calculates the speed limit threshold value of each CDN node 100, gives birth to simultaneously Become speed limit instruction.Global center collects the server 200 first receiver module 122 in CDN node 100 and issues this The speed limit instruction of domain name, and notify the band that first this domain name of receiver module 122 should service for 100 times in this CDN node Width values.

In an embodiment of the application, if the current bandwidth of domain name is less than bandwidth threshold, then keep supporting domain name The bandwidth of each CDN node 100 constant.Specifically, if Global center collects server 200 judges certain The bandwidth information of domain name is not less than the bandwidth threshold of configuration, then Global center collects the server 200 band only to this domain name Wide information is added up, and does not issue speed limit instruction.

First receiver module 122 collects the server 200 stream according to each CDN node 100 for receiving Global center The speed limit instruction that amount information and domain-name information generate, wherein, speed limit instruction includes that corresponding CDN node 100 is for being propped up The actual offer bandwidth value of domain name is provided.

Computing module 123, for according to the actual offer bandwidth value for supported domain name, calculates in CDN node 100 The bandwidth value that provided for supported domain name of each WEB server 110.Specifically, the first receiver module 122 are receiving this domain name after the bandwidth value that CDN node should service for 100 times, and computing module 123 judges should Service the quantity of the WEB server 110 of this domain name in CDN node 100, calculate each WEB server 110 The bandwidth value that this domain name should be provided.

Second sending module 124 is used for each WEB server 110 in CDN node 100 for institute's support region The bandwidth value that name is provided sends to WEB server 110.Specifically, the second sending module 124 is by each WEB Server 110 it would be desirable to provide bandwidth value be sent to correspondence WEB server 110.

WEB server 110 is controlled for the bandwidth value provided for supported domain name according to self correspondence. Specifically, WEB server 110 can configure a bandwidth threshold, and the bandwidth value of this domain name is limited in bandwidth threshold Between value.WEB server 110 adjusts the bandwidth value servicing this domain name in this bandwidth threshold, thus reaches to control to use The purpose of speed of download when family accesses this domain name.

In an embodiment of the application, Global center collects server 200 and generates speed limit instruction according to predetermined period, When the first receiver module 122 does not receives the speed limit instruction that Global center collects server 200, stop WEB being taken Business device 110 carries out speed limit.Specifically, the download to user of the WEB server 110 in CDN node 100 During speed carries out speed limit, along with the current bandwidth value of domain name declines, Global center collects server 200 and judges The current bandwidth value of this domain name is no longer beyond bandwidth threshold, then Global center collects server 200 no longer to each CDN First receiver module 122 of node 100 issues speed limit instruction.Second sending module 124 of CDN node 100 is the most just No longer each WEB server 110 in CDN node 100 issues speed limit instruction, and WEB server 100 is no longer The bandwidth value provided is controlled, thus recovers the speed of download of user.

In order to realize above-described embodiment, the application also proposes a kind of Global center and collects server.

Fig. 7 is the structural representation that the Global center of one embodiment of the application collects server, as it is shown in fig. 7, entirely Office collects server 200 in center and includes: receiver module 210, generation module 220 and sending module 230.Wherein, raw Module 220 is become to include collection unit 221, judging unit 222, transmitting element 223 and signal generating unit 224.

Specifically, receiver module 210 is for receiving flow information and the domain-name information of each CDN node 100.Specifically For, when user accesses certain domain name, the access request of user can send to certain concrete CDN node 100 In WEB server 110, WEB server 110 can return to user and access resource file required during this domain name. It is to say, when user downloads resource file from certain WEB server 110, WEB server 110 can be united The byte number that meter domain name is sent by this WEB server 110 each second, to record the descending of this domain name current time Flow.The increment of domain name and domain name downlink traffic is collected by WEB server 110 according to the first predetermined period, and Summarized results is sent to central control server 120 in the node in this CDN node 110.

In an embodiment of the application, in the node in each CDN node 100, central control server 120 connects Receive the flow increment for supported domain name that in CDN node 100, WEB server 110 reports, and according to flow Increment and supported domain name generate flow information and the domain-name information of CDN node 100 correspondence.Specifically, in node Central control server 120 each WEB server 110 in CDN node 100 collects the bandwidth feelings of each domain name Condition, calculates each domain name bandwidth value in CDN node 100.It is to say, central control server in node 120, after the increment of the domain name and domain name downlink traffic that receive WEB server 110 transmission, preset according to second Domain name and the increment of domain name downlink traffic that each WEB server 110 is supported by the cycle collect, and generating should Domain-name information under CDN node 100 and corresponding flow information.Then, in node, central control server 120 will The domain-name information and the corresponding flow information that generate are sent to Global center and collect the receiver module 210 of server 200, by This, Global center collects server 200 and can inquire according to domain-name information and corresponding flow information at any time The arbitrarily current bandwidth information of domain name, or inquire the bandwidth information of any domain name meaning in office CDN node 100.

Generation module 220 generates speed limit instruction for the flow information according to each CDN node 100 and domain-name information, Wherein, speed limit instruction includes the corresponding CDN node 100 actual offer bandwidth value for supported domain name.

In an embodiment of the application, generation module 220 includes collection unit 221, judging unit 222, sends Unit 223 and signal generating unit 224.Wherein, collection unit 221 is for the flow information to each CDN node 100 Collect with domain-name information.Judging unit 222 is for determining whether that the current bandwidth of domain name is more than bandwidth threshold. Transmitting element 223 is for when the current bandwidth of domain name is more than bandwidth threshold, sending according to each CDN node 100 Flow information and domain-name information send each CDN node 100 actual offer bandwidth value for domain name.Signal generating unit 224 For instructing for the actual offer bandwidth value generation speed limit of domain name according to each CDN node.Specifically, cover sheet Domain-name information and flow information that unit 221 collects according to CDN node 100 calculate each domain name and save at each CDN Bandwidth information on point 100, then judging unit 222 judges whether the bandwidth information of each domain name has exceeded configuration Bandwidth threshold.If it is determined that the current bandwidth that unit 222 judges certain domain name has exceeded bandwidth threshold, then by receiving The bandwidth information of this domain name that module 210 receives estimates the actual bandwidth threshold that should service of each CDN node 100 Value, the bandwidth information serviced according to each CDN node 100 calculates the speed limit threshold value of each CDN node 100, Signal generating unit 224 generates speed limit instruction simultaneously.

Sending module 230 central control server in the node in each CDN node 100 sends speed limit instruction. Specifically, in the sending module 230 node in CDN node 100, central control server 120 issues this domain name Speed limit instruction, transmitting element 223 central control server 120 in node sends this domain name in this CDN node 100 The bandwidth value that should service down.

In an embodiment of the application, if it is determined that the current bandwidth that unit 222 judges domain name is less than bandwidth threshold, The bandwidth then keeping each CDN node of domain name is constant.Specifically, if it is determined that unit 222 judges certain domain name Bandwidth information not less than configuration bandwidth threshold, then the bandwidth information of this domain name is only added up by signal generating unit 224, Sending module 230 does not issue speed limit instruction.

And then, in node, central control server 120 saves at CDN in this domain name receiving sending module 230 transmission After the bandwidth value that point should service for 100 times, it is judged that service the WEB server of this domain name in this CDN node 100 The quantity of 110, calculates the bandwidth value that this domain name should be provided by each WEB server 110.Center control in node Control server 120 by each WEB server 110 it would be desirable to provide bandwidth value be sent to correspondence WEB server 110. Wherein, WEB server 110 can configure a bandwidth threshold, the bandwidth value of this domain name is limited in bandwidth threshold it Between.WEB server 110 adjusts the bandwidth value servicing this domain name in this bandwidth threshold, thus reaches to control user and visit The purpose of speed of download when asking this domain name.

In an embodiment of the application, generation module 220 generates speed limit instruction according to predetermined period, when CDN saves When in node in point 100, central control server 120 does not receives the speed limit instruction that sending module 230 sends, stop Only the WEB server 110 in CDN node 100 is carried out speed limit.Specifically, in CDN node 100 WEB server 110 speed of download of user is carried out speed limit during, along with domain name current bandwidth value decline, Judging unit 222 judges that the current bandwidth value of this domain name no longer exceeds bandwidth threshold, then sending module 230 is no longer to respectively In the node of individual CDN node 100, central control server 120 issues speed limit instruction.Central control server in node 120 the most no longer each WEB server 110 in CDN node 100 issue speed limit instruction, WEB server The bandwidth value provided no longer is controlled by 100, thus recovers the speed of download of user.

Should be appreciated that each several part of the application can realize by hardware, software, firmware or combinations thereof.In above-mentioned reality Execute in mode, software that multiple steps or method in memory and can be performed by suitable instruction execution system with storage or Firmware realizes.Such as, if realized with hardware, with the most the same, available well known in the art under Any one or their combination in row technology realize: have the logic gates for data signal realizes logic function Discrete logic, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), existing Field programmable gate array (FPGA) etc..

In this application, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", etc. term should do Broadly understood, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be to be mechanically connected, It can also be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two element internals Connection or the interaction relationship of two elements, unless otherwise clear and definite restriction.For those of ordinary skill in the art Speech, can understand above-mentioned term concrete meaning in this application as the case may be.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ", Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes It is contained at least one embodiment or the example of the application.In this manual, to the schematic representation of above-mentioned term necessarily It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel And combination.

Although above it has been shown and described that embodiments herein, it is to be understood that above-described embodiment is exemplary, It is not intended that the restriction to the application, those of ordinary skill in the art can be to above-described embodiment in scope of the present application It is changed, revises, replaces and modification.

Claims

1. the speed-limiting control method of a CDN system, it is characterised in that described CDN system includes many Individual CDN node and the Global center communicated with the plurality of CDN node collect server, each described CDN node Server is collected including at least one WEB server with at least one WEB server described and described Global center Central control server in the node of communication, said method comprising the steps of:

In node in each CDN node central control server to described Global center collect server send described often The flow information of individual CDN node and domain-name information, so that described Global center collects server according to described each CDN The flow information of node and domain-name information generate speed limit instruction, and wherein, the instruction of described speed limit includes corresponding CDN node pin Actual offer bandwidth value to supported domain name；

In described node, central control server receives the instruction of described speed limit, and according to the described reality for supported domain name Border provides bandwidth value, and each WEB server calculated in described CDN node is provided for described supported domain name Bandwidth value；And

In described node, each WEB server in described CDN node is propped up by central control server for described Hold the bandwidth value that domain name provided to send to described each WEB server so that described each WEB server according to The bandwidth value provided for described supported domain name of self correspondence is controlled.

2. the speed-limiting control method of CDN system as claimed in claim 1, it is characterised in that also include:

WEB service during central control server receives described CDN node in node in each described CDN node The flow increment for described supported domain name that device reports, and raw according to described flow increment and described supported domain name Become described flow information corresponding to described CDN node and domain-name information.

3. the speed-limiting control method of CDN system as claimed in claim 1, it is characterised in that also include:

Described Global center collects flow information and domain-name information that each described CDN node sends by server and converges Always, and determine whether that the current bandwidth of domain name is more than bandwidth threshold；

If the current bandwidth of domain name is more than described bandwidth threshold, the most described Global center collects server according to every Flow information that individual described CDN node sends and each described CDN node of domain-name information are for the reality of domain name Bandwidth value is provided；And

Described Global center collects server according to each described CDN node for the actual offer bandwidth value of domain name Generate the instruction of described speed limit.

4. the speed-limiting control method of CDN system as claimed in claim 3, it is characterised in that also include:

If the current bandwidth of domain name is less than described bandwidth threshold, then keep each CDN joint supporting domain name The bandwidth of point is constant.

5. the speed-limiting control method of CDN system as claimed in claim 1, it is characterised in that wherein, institute State Global center collect server according to predetermined period generate described speed limit instruction, described method also includes:

When in the node in described CDN node, central control server does not receives described Global center and collects server After speed limit instruction, stop the WEB server in described CDN node is carried out speed limit.

6. the speed-limiting control method of a CDN system, it is characterised in that described CDN system includes many Individual CDN node and the Global center communicated with the plurality of CDN node collect server, each described CDN node Server is collected including at least one WEB server with at least one WEB server described and described Global center Central control server in the node of communication, said method comprising the steps of:

Described Global center collects server and receives flow information and the domain-name information of each CDN node, and according to described The flow information of each CDN node and domain-name information generate speed limit instruction, and wherein, the instruction of described speed limit includes correspondence CDN node is for the actual offer bandwidth value of supported domain name；And

In described Global center collects server node in described CDN node, central control server sends described limit Speed instruction, so that central control server is according to the described actual offer bandwidth value for supported domain name in described node, Calculate the bandwidth value that each WEB server in described CDN node is provided for described supported domain name, and will The bandwidth value that each WEB server in described CDN node is provided for described supported domain name sends to described Each WEB server so that described each WEB server according to self correspondence for described supported domain name institute The bandwidth value provided is controlled.

7. the speed-limiting control method of CDN system as claimed in claim 6, it is characterised in that also include:

If the current bandwidth of domain name is more than described bandwidth threshold, the most described Global center collects server according to every Flow information and domain-name information that individual described CDN node sends send each described CDN node for domain name Actual offer bandwidth value；And

8. the speed-limiting control method of CDN system as claimed in claim 7, it is characterised in that also include:

9. a CDN system, it is characterised in that described CDN system include multiple CDN node and The Global center communicated with the plurality of CDN node collects server, and each described CDN node includes at least one WEB server and in collect the node of server communication with at least one WEB server described and described Global center Central control server, wherein,

Described Global center collects server and generates speed limit for the flow information according to each CDN node and domain-name information Instruction, wherein, the instruction of described speed limit includes the corresponding CDN node actual offer bandwidth value for supported domain name；

In node in each CDN node, central control server sends institute for collecting server to described Global center State flow information and the domain-name information of each CDN node, and receive the instruction of described speed limit, and according to described for institute Supporting the actual offer bandwidth value of domain name, each WEB server calculated in described CDN node is propped up for described Hold the bandwidth value that domain name is provided, and by each WEB server in described CDN node for described institute support region The bandwidth value that name is provided sends to each WEB server；And

Described each WEB server is for the bandwidth value provided for described supported domain name according to self correspondence It is controlled.

10. CDN system as claimed in claim 9, it is characterised in that in each described CDN node In node, central control server is additionally operable to receive that WEB server in described CDN node reports is propped up for described Hold the flow increment of domain name, and it is corresponding to generate described CDN node according to described flow increment with described supported domain name Described flow information and domain-name information.

11. CDN systems as claimed in claim 9, it is characterised in that described Global center collects server The flow information and the domain-name information that are additionally operable to send each described CDN node collect, and determine whether domain name Current bandwidth more than bandwidth threshold, and when the current bandwidth of domain name is more than described bandwidth threshold, according to often Flow information that individual described CDN node sends and each described CDN node of domain-name information are for the reality of domain name There is provided bandwidth value, and according to each described CDN node for domain name actual offer bandwidth value generate described speed limit Instruction.

12. CDN systems as claimed in claim 11, it is characterised in that described Global center collects service Device is additionally operable to:

When the current bandwidth of domain name is less than described bandwidth threshold, keep each CDN node supporting domain name Bandwidth constant.

13. CDN systems as claimed in claim 9, it is characterised in that wherein, described Global center collects Server generates the instruction of described speed limit according to predetermined period, and in the node in described CDN node, central control server is also For:

When not receiving the speed limit instruction that described Global center collects server, stop in described CDN node WEB server carries out speed limit.

14. 1 kinds of CDN node, it is characterised in that described CDN node include at least one WEB server and With central control server in the node that at least one WEB server described and Global center collect server communication, its In, in described node, central control server includes:

First sending module, sends the flow letter of described each CDN node for collecting server to described Global center Breath and domain-name information；

First receiver module, collects the server flow according to described each CDN node for receiving described Global center The speed limit instruction that information and domain-name information generate, wherein, the instruction of described speed limit includes that corresponding CDN node is for being supported The actual offer bandwidth value of domain name；

Computing module, for according to the described actual offer bandwidth value for supported domain name, calculates described CDN node The bandwidth value that interior each WEB server is provided for described supported domain name；

Second sending module, is used for each WEB server in described CDN node for described supported domain name The bandwidth value provided sends to described WEB server；And

Described WEB server is carried out for the bandwidth value provided for described supported domain name according to self correspondence Control.

15. CDN node as claimed in claim 14, it is characterised in that central control server in described node Also include:

Second receiver module, for receiving the flow increment for described supported domain name that described WEB server reports； And

Generation module, for generating, with described supported domain name, the institute that described CDN node is corresponding according to described flow increment State flow information and domain-name information.

16. CDN node as claimed in claim 14, it is characterised in that wherein, described Global center collects clothes Business device generates the instruction of described speed limit according to predetermined period, converges when described first receiver module does not receives described Global center When the speed limit of director server instructs, stop described WEB server is carried out speed limit.

17. 1 kinds of Global centers collect server, it is characterised in that described Global center collects server and multiple CDN Node communication, each described CDN node includes at least one WEB server and takes with at least one WEB described Business device and described Global center collect central control server in the node of server communication, and described Global center collects clothes Business device includes:

Receiver module, for receiving flow information and the domain-name information of each described CDN node；

Generation module, generates speed limit instruction for the flow information according to described each CDN node and domain-name information, its In, the instruction of described speed limit includes the corresponding CDN node actual offer bandwidth value for supported domain name；And

Sending module, in the node in each described CDN node, the described speed limit of central control server transmission refers to Order.

18. Global centers as claimed in claim 17 collect server, it is characterised in that described generation module includes:

Collection unit, for collecting flow information and the domain-name information of described each CDN node；

Judging unit, for determining whether that the current bandwidth of domain name is more than bandwidth threshold；

Transmitting element, for when the current bandwidth of domain name is more than described bandwidth threshold, according to each described CDN Flow information and domain-name information that node sends send each described CDN node actual offer bandwidth for domain name Value；And

Signal generating unit, for described for the actual offer bandwidth value generation of domain name according to each described CDN node Speed limit instructs.

19. Global centers as claimed in claim 18 collect server, it is characterised in that if described judging unit Judge that the current bandwidth of domain name less than described bandwidth threshold, then keeps the bandwidth of each CDN node of domain name Constant.