CN106230942B - A kind of method and system of time source access - Google Patents
A kind of method and system of time source access Download PDFInfo
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- CN106230942B CN106230942B CN201610621904.5A CN201610621904A CN106230942B CN 106230942 B CN106230942 B CN 106230942B CN 201610621904 A CN201610621904 A CN 201610621904A CN 106230942 B CN106230942 B CN 106230942B
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- 238000004458 analytical method Methods 0.000 claims description 6
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
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- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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Abstract
The present invention discloses the method and system of a kind of time source access, is related to field of communication technology, can solve back the slow problem of source response.The embodiment of the present invention sends content query requests to central node by GSLB system, and content query requests are used to indicate central node and inquire itself whether store the data that terminal needs to access, and then GSLB system receives the content search result that central node is sent；When content search result is not inquire, GSLB system determines back source mode, returning source mode includes that central node returns source and terminal Hui Yuan, and central node Hui Yuan is directly to carry out Hui Yuan by central node to source station, and terminal Hui Yuan is directly to carry out Hui Yuan by terminal to source station.Scheme provided in an embodiment of the present invention is suitable for back using when the access of source.
Description
Technical field
The present invention relates to the method and system that field of communication technology more particularly to a kind of time source access.
Background technique
CDN (Content Delivery Network, content distributing network) is by placing node clothes everywhere in network
One layer of intelligent virtual network that business device is constituted.CDN can be in real time according to the connection of network flow and each node, load state
And the content access request of terminal is redirected into the integrated informations such as the distance of terminal and response time nearest from terminal
Fringe node on, to select the fringe node from terminal relative close to provide business service as terminal, and then alleviate network and gather around
Crowded situation improves the response speed of website.
When fringe node is when responding the content access request of terminal, if the fringe node does not have locally terminal to need to visit
The content asked, then the fringe node needs to carry out Hui Yuan to source station, to obtain the content that terminal needs to access, provides the terminal with industry
Business service.In the prior art, fringe node carries out the detailed process of Hui Yuan to source station are as follows: terminal sends content to fringe node and visits
Ask request, fringe node does not inquire the content that terminal needs to access in local, then forwards the access to content to ask to Area Node
It asks, Area Node does not inquire the content that terminal needs to access in local, then forwards content query requests, center to central node
Node does not inquire the content that terminal needs to access in local, then sends back source access request to source station, source station needs terminal
The content of access is supplied to central node, and terminal is needed the content accessed to be supplied to Area Node, Area Node by central node
It needs the content accessed to be supplied to fringe node terminal, business service is provided the terminal with by fringe node.
As it can be seen that returning in source procedure in fringe node to source station, needs via access fringe node, Area Node and center
Node is inquired step by step, after central node gets the content for needing to access to source station, then returns to the content for needing to access step by step,
The period for causing back source to respond is longer, speed is slower.
Summary of the invention
The embodiment of the present invention provides the method and system of a kind of time source access, and the speed that can solve back source response is slower
The problem of.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
The method of a kind of time source access, the method are applied in content distributing network CDN, which comprises
Global load balancing GSLB system sends content query requests to central node, and the content query requests are for referring to
Show that the central node is inquired and itself whether stores the data that terminal needs to access；
The GSLB system receives the content search result that the central node is sent；
When the content search result is not inquire, the GSLB system determines back source mode, described time source mode
Going back to source and terminal Hui Yuan, the central node Hui Yuan including central node is directly to carry out Hui Yuan by central node to source station,
The terminal Hui Yuan is directly to carry out Hui Yuan by terminal to source station.
A kind of system of time source access, the system comprises:
GSLB system, for sending content query requests to central node, the content query requests are used to indicate described
Central node inquires itself whether store the data that terminal needs to access；
The central node, the content query requests sent for receiving the GSLB system；Inquire whether itself stores
Terminal needs the data accessed；
The GSLB system is also used to receive the content search result that the central node is sent；When the content search
As a result to determine back source mode when not inquiring, described time source mode includes central node time source and terminal Hui Yuan, it is described in
Heart node Hui Yuan is directly to carry out Hui Yuan by central node to source station, and the terminal Hui Yuan is directly to be returned by terminal to source station
Source；
The central node is also used to send content search result to the GSLB system.
The method and system of provided in an embodiment of the present invention time source access, GSLB system are used to indicate to central node transmission
Central node inquires the content query requests for itself whether storing the data that terminal needs to access, and receives central node transmission
Content search is as a result, when content search result is not inquire, and GSLB system determines back source mode, and returning source mode is centromere
The source of putting back or terminal Hui Yuan, central node Hui Yuan are directly to carry out Hui Yuan by central node to source station, and terminal Hui Yuan is direct
Hui Yuan is carried out by terminal to source station.With in the prior art, return the speed of source response compared with slow phase ratio, in the embodiment of the present invention, GSLB
System determines a kind of time source mode, and when returning source mode is that center node goes back to source, central node directly arrives source station and carries out Hui Yuan, is
User provides business service, and when returning source mode is that terminal goes back to source, terminal directly arrives source station and carries out Hui Yuan, and source station provides for user
Business service, it is seen then that no matter source mode returned using which kind of, central node be all not necessarily to via Area Node and fringe node step by step to
Terminal returns to the data that terminal needs to access, and shortens back the period of source response, improves back the speed of source response.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the method for a kind of time source provided in an embodiment of the present invention access；
Fig. 2 is the flow chart of another method for returning source access provided in an embodiment of the present invention；
Fig. 3 is the flow chart of another method for returning source access provided in an embodiment of the present invention；
Fig. 4 is the flow chart of another method for returning source access provided in an embodiment of the present invention；
Fig. 5 is the logical construction schematic diagram of the system of a kind of time source provided in an embodiment of the present invention access；
Fig. 6 is the logical construction schematic diagram of another system for returning source access provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to promote back the speed of source response, the embodiment of the invention provides the methods of a kind of time source access, are applied to CDN
In, as shown in Figure 1, this method comprises:
101, GSLB (Global Server Load Balance, global load balancing) system is into central node transmission
Hold inquiry request, content query requests are used to indicate central node and inquire itself whether store the data that terminal needs to access.
It should be noted that in the embodiment of the present invention, after GSLB receives domain name mapping request, without directly choosing side
Edge node is user service, but sends content query requests to central node, to determine in central node with the presence or absence of terminal
The data for needing to access, and then determine the need for carrying out back source access, avoiding whether there is in uncertain fringe node
It is user's allocations of edge node under the premise of the data that terminal needs to access, the situation for causing back source procedure complex occurs.
102, GSLB system receives the content search result that central node is sent.
It is understood that content search result is the data that center node itself and not stored terminal needs access, or
Central node itself stores the data that terminal needs to access.
103, when content search result is not inquire, GSLB system determines back source mode, and returning source mode includes center
Node returns source and terminal Hui Yuan.
Wherein, central node Hui Yuan is directly to carry out Hui Yuan by central node to source station, and terminal Hui Yuan is directly by terminal
Hui Yuan is carried out to source station.It should be noted that when content search result is center node itself and not stored terminal needs to access
Data when, GSLB system determines back source mode, directly carries out Hui Yuan by central node or terminal.
When content search result is that center node itself stores the data that terminal needs to access, GSLB system is by center
The IP address of node is sent to terminal by local dns server, and terminal is sent out according to the IP address of central node to central node
Content access request is sent, the data accessed are needed with requesting terminal, central node is user to terminal returned content access response
Business service is provided, the data that carried terminal needs to access in access to content response meet to accelerate the access speed of website
The demand of user.If a certain content is within a preset time, not being requested by a user access, then central node can also delete the content,
To mitigate the load of central node.
It should be noted that step 103 is not limited to only provide a user business service, central node by central node
Terminal can be needed the data accessed to be sent to Area Node, terminal can be needed the data accessed further to send by Area Node
To fringe node, Area Node, fringe node all can provide business service for user.
The method of provided in an embodiment of the present invention time source access, GSLB system are used to indicate centromere to central node transmission
Whether point inquiry itself stores the content query requests for the data that terminal needs to access, and the content for receiving central node transmission is looked into
It askes as a result, GSLB system determines back source mode, and returning source mode is central node Hui Yuan when content search result is not inquire
Or terminal Hui Yuan.Fringe node, Area Node and central node is needed to inquire step by step simultaneously with the source procedure that returns of the prior art
It returns the result, the speed for causing back source to respond is compared with slow phase ratio, and in the embodiment of the present invention, GSLB system is without directly selection edge section
Point is user service, but sends content query requests to central node, to determine in central node with the presence or absence of terminal needs
The data of access, and then determine the need for carrying out back source access, it avoids in uncertain fringe node with the presence or absence of user
It is just user's allocations of edge node under the premise of the content for needing to access, the situation for causing back source procedure complex occurs, and
No matter using which kind of time source mode, central node is all not necessarily to need to terminal return user step by step via Area Node and fringe node
The content to be accessed shortens back the period of source response, improves back the speed of source response.
The method flow of Fig. 1 be executed after the process that terminal initiates domain name analysis request, so, of the invention real
Apply example offer another implementation in, above-mentioned steps 101, GSLB system to central node send content query requests it
Before, as shown in Fig. 2, also needing to execute step 201 to 202.
201, GSLB system receives the domain name mapping request of local dns server forwarding.
Wherein, the domain name of user's input is carried in domain name mapping request.
It should be noted that domain name mapping request is sent by terminal, it is therefore an objective to obtain and be carried with domain name mapping request
The corresponding IP of domain name (Internet Protocol, Internet protocol) address, it is defeated for example, user is in the browser of terminal
When entering " www.abc.com " this domain name and keying in enter key, if terminal is unable to complete the parsing to the domain name, by the domain name
Analysis request is forwarded to local dns server, and local dns server does not inquire and the domain in the IP address that itself is stored
Domain name mapping request is then forwarded to source station DNS authorization server by the corresponding IP address of name, source station DNS authorization server to
Local dns server returns to domain name resolution response, and the GSLB system with the CDN of source station signing is carried in domain name mapping response
CNAME domain name, such as www.abc.cc.com, local dns server according to the CNAME domain name of obtained GSLB system, to
GSLB system forwards domain name mapping request.
202, GSLB system requests to generate content query requests according to domain name mapping.
GSLB system is requested related with the domain name carried in domain name mapping request to itself storage according to domain name mapping
Information, generate content query requests.
In addition, not generating larger shadow to the load of current CDN network in order to while promoting back the speed of source response
It rings, also needs to consider current Network status when determining back source mode, be based on this, provided in an embodiment of the present invention another real
In existing mode, as shown in Fig. 2, above-mentioned steps 103, GSLB system determines back source mode, specifically can be achieved for step 1031 to
1033。
1031, GSLB system determines current network load situation.
Wherein, current network load situation includes: the load state of central node and the load state of CDN network, CDN net
The load state of network refers to the link circuit condition etc. between load state, user and the node of each node.GSLB system is by above-mentioned shape
Condition carries out comprehensive descision, determines the load state of current network, and selects suitably to return source mode, provides business clothes for user
Business.Specifically, it can be achieved that being step 1032 or 1033.
1032, when current network load situation is congestion, GSLB system determines back that source mode is terminal Hui Yuan.
1033, when current network load situation is non-congested, GSLB system determines back that source mode is center node Hui Yuan.
The method of provided in an embodiment of the present invention time source access, GSLB system can be selected according to the load state of current network
Source mode is suitably returned, provides business service for user, it, will not be to the load at the network CDN while improving back source speed
Generate large effect, make transmission speed faster, it is more stable.
It is understood that determining back source mode in GSLB system on the basis of method flow shown in fig. 1 or fig. 2
Later, source procedure can be carried out back according to determining source mode of returning, in a kind of implementation provided in an embodiment of the present invention, such as
Shown in Fig. 3, when returning source mode is that center node goes back to source, in above-mentioned steps 103, after GSLB system determines back source mode, also
Following steps 104 to 108 need to be executed.
104, when returning source mode is that center node goes back to source, GSLB system passes through local dns server to terminal sending domain
Name resolution response, domain name mapping response in carry central node IP address.
105, terminal sends content access request to central node according to the IP address of central node.
Wherein, content access request needs the data accessed for requesting terminal.
It should be noted that content access request is embodied in, IP address and the center of the terminal according to central node
Node establishes TCP (Transmission Control Protocol, transmission control protocol) connection, needs to visit with requesting terminal
The data asked.
106, central node sends back source to source station according to content access request and requests.
Wherein, the data that source request needs to access for requesting terminal are returned.
It is understood that the data that central node is local and not stored terminal needs to access, need to request eventually to source station
End needs the data accessed.
It should be noted that time source interface address of central node and source station is the address of pre-configured fixation.
107, source station sends back source to central node and responds, and returns the data that carried terminal needs to access in the response of source.
108, central node responds to terminal according to the source of returning and sends access to content response, carried terminal in access to content response
The data for needing to access.
It should be noted that step 108 is not limited to provide a user business service, central node by central node
Terminal can be needed the data accessed to be sent to Area Node, terminal can be needed the data accessed further to send by Area Node
To fringe node, Area Node, fringe node all can provide business service for user.
It should be noted that above-mentioned steps 104 to 108, be in current network conditions it is non-congested, GSLB system determines Hui Yuan
Mode is that center node returns source Shi Zhihang.
In another implementation provided in an embodiment of the present invention, as shown in figure 4, working as back source mode is terminal Hui Yuan
When, in above-mentioned steps 103, after GSLB system determines back source mode, also need to execute following steps 401 to 403.
401, when returning source mode is that terminal goes back to source, GSLB system sends domain name solution to terminal by local dns server
Analysis responds, and the IP address of source station is carried in domain name mapping response.
402, terminal sends content access request to source station according to the IP address of source station, and content access request is for requesting end
End needs the data accessed.
403, source station sends back source to terminal and responds, and returns the data that carried terminal needs to access in the response of source.
It should be noted that source station directly provides business service, Bu Huizeng for user since current network conditions are congestion
The load for adding CDN network, after user's access, the number that central node can be accessed according to user is for statistical analysis,
If after the number of access reaches preset times, determining that the content is hot content, central node can request the content to source station
And cache to local, terminal can also be needed the data accessed to be sent to Area Node by central node, and Area Node can be by user
The content for needing to access further is sent to fringe node, central node, Area Node, fringe node can user again
When requesting access to the content, business service is provided for user, without carrying out the process of Hui Yuan again, improves access speed.
It should be noted that above-mentioned steps 401 to 403, are congestion in current network conditions, GSLB system determines Hui Yuanfang
Formula is that terminal returns source Shi Zhihang.
The method of provided in an embodiment of the present invention time source access, GSLB system determines a kind of time source mode, when time source mode
When going back to source for center node, central node directly arrives source station and carries out Hui Yuan, provides business service for user, is eventually when returning source mode
When holding go back to source, terminal directly arrives source station and carries out Hui Yuan, provides business service for user, it is seen then that and no matter which kind of uses return source mode,
Central node is all not necessarily to return to the data that terminal needs to access to terminal step by step via Area Node and fringe node, shortens back
In the period of source response, improve back the speed of source response.
Corresponding to method flow shown in FIG. 1, in order to promote back the speed of source response, the embodiment of the invention provides one kind
The system of the source of returning access, as shown in figure 5, the system includes: GSLB system 501, central node 502.
GSLB system 501, used in the transmission content query requests of central node 502, content query requests to be used to indicate
Heart node 502 inquires itself whether store the data that terminal needs to access.
Central node 502, for receiving the content query requests of the transmission of GSLB system 501；Inquire whether itself stores end
End needs the data accessed.
GSLB system 501 is also used to receive the content search result of the transmission of central node 502；When content search result is
When not inquiring, source mode is determined back, returning source mode includes that central node returns source and terminal Hui Yuan, and central node Hui Yuan is straight
It connects and Hui Yuan is carried out by central node 502 to source station, terminal Hui Yuan is directly to carry out Hui Yuan by terminal to source station.
Central node 502 is also used to send content search result to GSLB system 501.
In an alternative embodiment of the invention, as shown in fig. 6, the system further include: local dns server 503, terminal 504,
Source station 505.
Local dns server 503, for forwarding domain name mapping request to GSLB system 501.
GSLB system 501 is also used to receive the domain name mapping request of the forwarding of local dns server 503；According to domain name mapping
Request generates content query requests；Determine current network load situation；When current network load situation is congestion, Hui Yuan is determined
Mode is terminal Hui Yuan；When current network load situation is non-congested, determine back that source mode is center node Hui Yuan；Work as Hui Yuan
When mode is that center node goes back to source, domain name resolution response is sent to terminal 504 by local dns server 503, domain name mapping is rung
Answer the middle IP address for carrying central node 502.
Local dns server 503 is also used to receive the domain name mapping response of the transmission of GSLB system 501；To 504 turns of terminal
Send out domain name mapping response.
Terminal 504 is also used to receive the domain name mapping response of the forwarding of local dns server 503；According to central node 502
IP address send content access request to central node 502, content access request needs the number that accesses for requesting terminal 504
According to.
Central node 502 is also used to receive the content access request of the transmission of terminal 504；According to content access request to source
It stands and 505 sends back source request, return source request for requesting terminal 504 and need the data that access.
Source station 505, be also used to receive the transmission of central node 502 returns source request；Source is sent back to central node 502 to ring
It answers, returns the data that carried terminal 504 needs to access in the response of source.
Central node 502 is also used to be received back source response；It is responded according to the source of returning to terminal 504 and sends access to content response,
The data that carried terminal 504 needs to access in access to content response.
Terminal 504 is also used to reception content access response.
GSLB system 501 is also used to send out by local dns server to terminal 504 when returning source mode is that terminal goes back to source
It send domain name mapping to respond, the IP address of source station 505 is carried in domain name mapping response.
Local dns server 503 is also used to receive the domain name mapping response of the transmission of GSLB system 501；To 504 turns of terminal
Send out domain name mapping response.
Terminal 504 is also used to receive the domain name mapping response of the forwarding of local dns server 503；According to the IP of source station 505
Address sends content access request to source station 505, and content access request needs the data accessed for requesting terminal 504.
Source station 505 is also used to receive the content access request of the transmission of terminal 504；Source is sent back to terminal 504 to respond, and is returned
The data that carried terminal 504 needs to access in the response of source.
Terminal 504 is also used to be received back source response.
The system of provided in an embodiment of the present invention time source access, GSLB system are used to indicate centromere to central node transmission
Whether point inquiry itself stores the content query requests for the data that terminal needs to access, and the content for receiving central node transmission is looked into
It askes as a result, GSLB system determines back source mode, and returning source mode is central node Hui Yuan when content search result is not inquire
Or terminal Hui Yuan, central node Hui Yuan are directly to carry out Hui Yuan by central node to source station, terminal Hui Yuan is directly by terminal
Hui Yuan is carried out to source station.With in the prior art, return the speed of source response compared with slow phase ratio, in the embodiment of the present invention, GSLB system is true
Fixed a kind of time source mode, when returning source mode is that center node goes back to source, central node directly arrives source station and carries out Hui Yuan, mentions for user
For business service, when returning source mode is that terminal goes back to source, terminal directly arrives source station and carries out Hui Yuan, and source station provides business clothes for user
Business, it is seen then that no matter using which kind of time source mode, central node is all not necessarily to return to terminal step by step via Area Node and fringe node
The data that terminal needs to access are returned, the period of source response is shortened back, improve back the speed of source response.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Help software that the mode of required common hardware is added to realize, naturally it is also possible to which the former is more preferably by hardware, but in many cases
Embodiment.Based on this understanding, the portion that technical solution of the present invention substantially in other words contributes to the prior art
Dividing can be embodied in the form of software products, which stores in a readable storage medium, such as count
The floppy disk of calculation machine, hard disk or CD etc., including some instructions are used so that computer equipment (it can be personal computer,
Server or the network equipment etc.) execute method described in each embodiment of the present invention.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. the method for a kind of time source access, which is characterized in that the method is applied in content distributing network CDN, the method
Include:
Global load balancing GSLB system sends content query requests to central node, and the content query requests are used to indicate institute
It states central node and inquires itself whether store the data that terminal needs to access；
The GSLB system receives the content search result that the central node is sent；
When the content search result is not inquire, the GSLB system determines back source mode, and described time source mode includes
It is directly to carry out Hui Yuan by central node to source station that central node, which goes back to source and terminal Hui Yuan, the central node Hui Yuan, described
Terminal Hui Yuan is directly to carry out Hui Yuan by terminal to source station.
2. the method for according to claim 1 time source access, which is characterized in that sent out in the GSLB system to central node
Before sending content query requests, the method also includes:
The GSLB system receives the domain name mapping request of local domain name system dns server forwarding；
The GSLB system generates the content query requests according to domain name analysis request.
3. the method for according to claim 2 time source access, which is characterized in that the GSLB system determines back source mode packet
It includes:
The GSLB system determines current network load situation；
When the current network load situation is congestion, the GSLB system determines that the source mode of returning is terminal Hui Yuan；
When the current network load situation is non-congested, the GSLB system determines that the source mode of returning is returned for center node
Source.
4. according to claim 3 time source access method, which is characterized in that the GSLB determine back source mode it
Afterwards, the method also includes:
When described time source mode is that center node goes back to source, the GSLB system passes through local dns server to terminal sending domain
Name resolution response, the internet protocol address of the central node is carried in domain name resolution response；
Terminal sends content access request to the central node according to the IP address of the central node, and the access to content is asked
Seek the data for needing to access for requesting terminal；
The central node sends back source to the source station according to the content access request and requests, and described time source request is for asking
The data for asking terminal to need to access；
The source station sends back source to the central node and responds, the data that carried terminal needs to access in described time source response；
The central node is responded to terminal transmission access to content according to described time source and is responded, in the access to content response
Carried terminal needs the data accessed.
5. according to claim 3 time source access method, which is characterized in that the GSLB determine back source mode it
Afterwards, the method also includes:
When described time source mode is that terminal goes back to source, the GSLB system sends domain name solution to terminal by local dns server
Analysis responds, and the IP address of the source station is carried in domain name resolution response；
Terminal sends content access request to the source station according to the IP address of the source station, and the content access request is for asking
The data for asking terminal to need to access；
The source station sends back source to the terminal and responds, the data that carried terminal needs to access in described time source response.
6. the system of a kind of time source access, which is characterized in that the system comprises:
GSLB system, for sending content query requests to central node, the content query requests are used to indicate the center
Whether querying node itself stores the data that terminal needs to access；
The central node, the content query requests sent for receiving the GSLB system；Inquire whether itself stores terminal
The data for needing to access；
The GSLB system is also used to receive the content search result that the central node is sent；When the content search result
When not inquire, determine back that source mode, described time source mode include that central node returns source and terminal Hui Yuan, the centromere
Point Hui Yuan is directly to carry out Hui Yuan by central node to source station, and the terminal Hui Yuan is directly to carry out Hui Yuan by terminal to source station；
The central node is also used to send content search result to the GSLB system.
7. the system of according to claim 6 time source access, which is characterized in that the system also includes: local dns service
Device；
The local dns server, for being requested to the GSLB system forwards domain name mapping；
The GSLB system is also used to receive the domain name mapping request of the local dns server forwarding；According to domain name solution
Analysis request generates the content query requests.
8. the system of according to claim 7 time source access, which is characterized in that
The GSLB system is also used to determine current network load situation；When the current network load situation is congestion, really
The fixed source mode of returning is terminal Hui Yuan；When the current network load situation is non-congested, determine that the source mode of returning is
Central node Hui Yuan.
9. the system of according to claim 8 time source access, which is characterized in that
The GSLB system is also used to when described time source mode is that center node goes back to source, by local dns server to terminal
Domain name resolution response is sent, the IP address of the central node is carried in domain name resolution response；
The local dns server is also used to receive the domain name resolution response that the GSLB system is sent；To the terminal
Forward domain name resolution response；
The terminal is also used to receive the domain name resolution response of the local dns server forwarding；According to the centromere
The IP address of point sends content access request to the central node, and the content access request needs to access for requesting terminal
Data；
The central node is also used to receive the content access request that the terminal is sent；It is asked according to the access to content
It asks to the source station and sends back source request, the data that described time source request needs to access for requesting terminal；
The source station is also used to receive the described time source request that the central node is sent；Source is sent back to the central node
It responds, the data that carried terminal needs to access in described time source response；
The central node is also used to receive the source of going back to and responds；It is responded according to described time source to the terminal and sends content visit
Ask response, the data that carried terminal needs to access in the access to content response；
The terminal is also used to receive the access to content response.
10. the system of according to claim 8 time source access, which is characterized in that
The GSLB system is also used to send by local dns server to terminal when described time source mode is that terminal goes back to source
Domain name mapping responds, and the IP address of the source station is carried in domain name resolution response；
The local dns server is also used to receive the domain name resolution response that the GSLB system is sent；To the terminal
Forward domain name resolution response；
The terminal is also used to receive the domain name resolution response of the local dns server forwarding；According to the source station
IP address sends content access request to the source station, and the content access request needs the data accessed for requesting terminal；
The source station is also used to receive the content access request that the terminal is sent；Source is sent back to the terminal to respond,
The data that carried terminal needs to access in described time source response；
The terminal is also used to receive the source of going back to and responds.
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| CN107172186B (en) * | 2017-06-12 | 2019-06-14 | 中国联合网络通信集团有限公司 | Content acquisition method and system |
| CN109688171B (en) * | 2017-10-18 | 2021-05-25 | 中国电信股份有限公司 | Cache space scheduling method, device and system |
| CN110392074B (en) * | 2018-04-19 | 2022-05-17 | 贵州白山云科技股份有限公司 | Scheduling method and device based on dynamic acceleration |
| CN109769023B (en) * | 2019-01-16 | 2021-11-19 | 网宿科技股份有限公司 | Data transmission method, related server and storage medium |
| CN110417861B (en) * | 2019-06-25 | 2023-05-26 | 腾讯科技（北京）有限公司 | Information pushing method and related device |
| CN112398884B (en) * | 2019-08-14 | 2023-08-25 | 上海哔哩哔哩科技有限公司 | Flow scheduling control method under mirror image back source scene, readable storage medium and computer equipment |
| CN110971709B (en) * | 2019-12-20 | 2022-08-16 | 深圳市网心科技有限公司 | Data processing method, computer device and storage medium |
| CN112035424A (en) * | 2020-08-25 | 2020-12-04 | 北京金山云网络技术有限公司 | Data query method, device and system, electronic equipment and storage medium |
| CN112087644B (en) * | 2020-09-21 | 2022-10-04 | 北京金山云网络技术有限公司 | Pull stream request processing method, device and system, electronic equipment and storage medium |
| CN113179187B (en) * | 2021-05-24 | 2023-10-17 | 臻乐尔科技服务(上海)有限公司 | CDN node acceleration configuration distribution method |
| CN114268799B (en) * | 2021-12-23 | 2023-05-23 | 杭州阿启视科技有限公司 | Streaming media transmission method and device, electronic equipment and medium |
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