CN105847159A - CDN topological structure generating method and system - Google Patents
CDN topological structure generating method and system Download PDFInfo
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- CN105847159A CN105847159A CN201610201298.1A CN201610201298A CN105847159A CN 105847159 A CN105847159 A CN 105847159A CN 201610201298 A CN201610201298 A CN 201610201298A CN 105847159 A CN105847159 A CN 105847159A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
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Abstract
The invention discloses a CDN (Content Delivery Network) topological structure generating method, comprising: receiving the CDN node information of a whole network, the node information at least including node attribute information and node service type information; determining source nodes of the whole network according to the node attribute information; determining the source node corresponding to the node service type consistent with the service type of the service to be provided as a target source node; determining access paths from all fringe nodes to the target source node to generate a routing list; and issuing the routing list to all the fringe nodes to generate a topological structure. Correspondingly, the invention also discloses a system. The method and system generate a network topological diagram specific to specific services in a whole network based on services so as to provide services of specific service levels for users, which can help a dispatching center to retrieve CDN nodes capable of providing corresponding services for users in a more effective and reasonable way according to user access requirements based on a service topological structure, and corresponding access paths.
Description
Technical field
It relates to Internet technical field, particularly to the topological structure generation side of a kind of CDN
Method and system.
Background technology
CDN (Content Delivery Network, content distributing network) is a kind of by each at network
On existing Internet basic one layer of intelligent virtual network that node server is constituted is placed at place.
CDN can in real time according to network traffics and the connection of each node, load state and to user away from
From with integrated informations such as response times, the request of user is re-directed on the service node that user is nearest,
Its objective is to select the content needed for user sends user of the node from user's relative close, alleviate
The situation of network congestion, improves the response speed of website.
But, along with the development of CDN system is with perfect, the COS provided the user also is got over
Come the most, but, provide the user the CDN system of service at present still just for each of the whole network
CDN resource (such as, the memory space of the whole network CDN node, disposal ability, available live band
Program request bandwidth wide, available etc.) situation provide the user service, this results in and can not be
User provides more rationally business service accurately, and therefore, how the access request for user provides more
There is service targetedly and have become as current urgent problem.
Summary of the invention
The disclosure provides Topological Structure Generation and the system of a kind of CDN, to solve above-mentioned skill
Art problem.
According to an aspect of this disclosure, it is provided that the Topological Structure Generation of a kind of CDN, bag
Include:
Receive the whole network CDN node nodal information, described nodal information at least include node attribute information and
Node traffic type information；
The source node of the whole network is determined according to described node attribute information；
Determine the source described node traffic type corresponding to consistent with the type of service of described business to be supplied
Node is target source node；
Determine the access path of all fringe nodes extremely described target source node, to generate routing table；
Issue described routing table to described all fringe nodes to generate described topological structure.
According to another aspect of the disclosure, it is provided that the topological structure of a kind of CDN generates system, bag
Include:
Nodal information receiver module, for receiving the nodal information of the whole network CDN node, described nodal information
At least include node attribute information and node traffic type information；
Source node determines module, for determining the source node of the whole network according to described node attribute information；
Target source node determines module, for determining the institute consistent with the type of service of described business to be supplied
Stating the source node corresponding to node traffic type is target source node；
Routing table generation module, for determining the access path of all fringe nodes extremely described target source node,
To generate routing table；
Topological structure generation module, is used for issuing described routing table to described all fringe nodes to generate institute
State topological structure.
The Topological Structure Generation of the CDN of the disclosure and system, by raw at the whole network based on business
Become the network topological diagram for concrete business, so that the service provided the user is specific to service level
Not, on the other hand contributing to control centre can more according to the network topology structure based on business generated
The efficient and rational access request for user transfer can provide the user respective service CDN node and
Corresponding access path.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of disclosure embodiment, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is the disclosure
Some embodiments, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the Topological Structure Generation of the CDN of the disclosure；
Fig. 2 is the flow chart of another embodiment of the Topological Structure Generation of the CDN of the disclosure；
Fig. 3 is the flow chart of the another embodiment of the Topological Structure Generation of the CDN of the disclosure；
Fig. 4 is the schematic diagram of an embodiment of the topological structure generation system of the CDN of the disclosure；
Fig. 5 is the schematic diagram of another embodiment of the topological structure generation system of the CDN of the disclosure；
Fig. 6 is the schematic diagram of the another embodiment of the topological structure generation system of the CDN of the disclosure.
Specific embodiment
For making the purpose of disclosure embodiment, technical scheme and advantage clearer, below in conjunction with these public affairs
Open the accompanying drawing in embodiment, the technical scheme in disclosure embodiment be clearly and completely described,
Obviously, described embodiment is a part of embodiment of the disclosure rather than whole embodiments.Based on
Embodiment in the disclosure, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of disclosure protection.
It should be noted that in the case of not conflicting, the embodiment in the application and the spy in embodiment
Levy and can be mutually combined.
The disclosure can be used in numerous general or special purpose computing system environment or configuration.Such as: Ge Renji
Calculation machine, server computer, handheld device or portable set, laptop device, multicomputer system,
System based on microprocessor, set top box, programmable consumer-elcetronics devices, network PC, small-sized calculating
Machine, mainframe computer, the DCE including any of the above system or equipment etc..
The disclosure can described in the general context of computer executable instructions,
Such as program module.Usually, program module includes performing particular task or realizing specific abstract data class
The routine of type, program, object, assembly, data structure etc..Can also be in a distributed computing environment
Put into practice the disclosure, in these DCEs, by by communication network connected remotely
Reason equipment performs task.In a distributed computing environment, program module may be located at and includes storage device
In interior local and remote computer-readable storage medium.
Finally, in addition it is also necessary to explanation, in this article, the relational terms of such as first and second or the like
It is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires
Or imply relation or the order that there is any this reality between these entities or operation.And, art
Language " includes ", " comprising ", not only include those key elements, but also other including being not expressly set out wanted
Element, or also include the key element intrinsic for this process, method, article or equipment.Do not having
In the case of more restrictions, statement " including ... " key element limited, it is not excluded that including described wanting
Process, method, article or the equipment of element there is also other identical element.
As it is shown in figure 1, the Topological Structure Generation of the CDN of an embodiment of the disclosure, including:
S11, the nodal information of reception the whole network CDN node, described nodal information at least includes nodal community
Information and node traffic type information；
S12, determine the source node of the whole network according to described node attribute information；
S13, determine corresponding to the described node traffic type consistent with the type of service of described business to be supplied
Source node be target source node；
S14, determine all fringe nodes to the access path of described target source node, to generate routing table；
S15, issue described routing table to described all fringe nodes to generate described topological structure.
In the present embodiment, by generating the network topological diagram for concrete business based on business at the whole network, from
And make the service that provides the user specific to business-level, on the other hand contribute to control centre according to
The network topology structure based on business generated can the more efficient and rational access request for user be transferred
The CDN node of respective service and corresponding access path can be provided the user.
As in figure 2 it is shown, in the Topological Structure Generation of the CDN of an embodiment of the disclosure,
Determine that all fringe nodes include to the access path of described target source node:
S21, basis node including all fringe nodes and described target source node are at interior joint two-by-two
The point historical basis network information each other determine described in euclidean distance between node pair between node two-by-two；
S22, determine that according to the described euclidean distance between node pair determined all fringe nodes are to described target source node
Shortest path is described access path.
In the present embodiment, the historical basis network information at least includes: internodal message transmission rate, past
Return time and packet loss.
Believe by considering the web-based histories such as internodal message transmission rate, two-way time and packet loss
Breath measures the most internodal distance, and (wherein downloading rate is to carry out data transmission between two nodes
The measurement of speed, the distance between downloading rate the biggest explanation two node is the nearest, so downloading rate and two
Distance between node is inversely proportional to；Two-way time is the time carrying out the most complete communication between two nodes,
The shortest explanation two two-way time euclidean distance between node pair is the nearest；Transmission information when packet loss is communication between two nodes
The tolerance of integrality, packet loss is the biggest, shows to transmit between two nodes the most imperfect of information, i.e. two
Internodal distance is the biggest) so that the distance value between two nodes finally determined is more reliable such that it is able to
The distribution carrying out content for CDN system provides more reliable scheduling foundation, it is ensured that the Service Quality to user
Amount, thus contribute to promoting Consumer's Experience.
Message transmission rate in present embodiment and be directly monitored two-way time obtaining；Wherein, past
Time of returning is exactly sender in simple terms from the beginning of sending data, to receiving the confirmation from reciever
The time experienced, it is important performance indications in a computer network for it, represents from transmitting terminal
Transmission data start, and (receiving terminal receives after data soon to receive confirmation from receiving terminal to transmitting terminal
Send confirm), the time delay altogether experienced, RTT value by three part decisions: i.e. link propagation time,
Queuing in the caching processing time and router of end system and the time of process；Wherein, before two
The value of individual part is relatively fixed as a TCP connection, the queuing in the caching of router and the time of process
Can change, so the change of RTT reflects to a certain extent along with the change of whole network congestion degree
The change of network congestion degree.
Packet loss (Loss Tolerance or Packet Loss Rate) refers to lost data packet number in test
Accounting for the ratio of sent data group, computational methods are: " [(incoming message-outgoing message)/input report
Literary composition] * 100% ", the packet loss in present embodiment is that the data that first node sends deduct Section Point reception
To the data that send divided by first node of data be multiplied by very.
As it is shown on figure 3, in the Topological Structure Generation of the CDN of an embodiment of the disclosure,
Determine that all fringe nodes include to the access path of described target source node:
Node two-by-two in S31, basis node including all fringe nodes and described target source node
The historical basis network information each other determine described in euclidean distance between node pair between node two-by-two；
S32, according to described euclidean distance between node pair generate minimum spanning tree；
S33, determine that all fringe nodes of obtaining according to described minimum spanning tree are to the road of object edge node
Footpath is described access path.
In present embodiment, from the overall situation, determine the distance descended between each node, and according to all of
Euclidean distance between node pair generates minimum spanning tree so that can direct basis when control centre is user scheduling node
Minimum spanning tree determines the node that distance users is nearest, decreases the reaction time of scheduling.
Type of service described in any of the above-described embodiment of the disclosure at least includes live and/or program request, more
Concrete can also be for live in current hotspot file, non-thermal dot file, and working as in program request
Front focus file, non-thermal dot file etc..
Disclosure embodiment can be passed through hardware processor (hardware processor) realize being correlated with
Functional module.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore by its all table
Stating and merge for a series of action, but those skilled in the art should know, the disclosure is by being retouched
The restriction of the sequence of movement stated because according to the disclosure, some step can use other orders or with
Shi Jinhang.Secondly, those skilled in the art also should know, embodiment described in this description all belongs to
In preferred embodiment, necessary to involved action and the module not necessarily disclosure.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has in certain embodiment
The part described in detail, may refer to the associated description of other embodiments.
As shown in Figure 4, an embodiment of invention also provides for the topological structure of a kind of CDN and generates system,
Including:
Nodal information receiver module, for receiving the nodal information of the whole network CDN node, described nodal information
At least include node attribute information and node traffic type information；
Source node determines module, for determining the source node of the whole network according to described node attribute information；
Target source node determines module, for determining the institute consistent with the type of service of described business to be supplied
Stating the source node corresponding to node traffic type is target source node；
Routing table generation module, for determining the access path of all fringe nodes extremely described target source node,
To generate routing table；
Topological structure generation module, is used for issuing described routing table to described all fringe nodes to generate institute
State topological structure.
In the present embodiment, by generating the network topological diagram for concrete business based on business at the whole network, from
And make the service that provides the user specific to business-level, on the other hand contribute to control centre according to
The network topology structure based on business generated can the more efficient and rational access request for user be transferred
The CDN node of respective service and corresponding access path can be provided the user.
As it is shown in figure 5, the topological structure that an embodiment of invention also provides for a kind of CDN generates system
In, routing table generation module includes:
Euclidean distance between node pair determines unit, for according to including that all fringe nodes and described target source node exist
In node determine in the interior node two-by-two historical basis network information each other described in two-by-two node it
Between euclidean distance between node pair；
Access path determines unit, for determining all fringe nodes according to the described euclidean distance between node pair determined
Shortest path to described target source node is described access path；
Routing table signal generating unit, for generating described routing table according to described access path.
In the present embodiment, the historical basis network information at least includes: internodal message transmission rate, past
Return time and packet loss.
Believe by considering the web-based histories such as internodal message transmission rate, two-way time and packet loss
Breath measures the most internodal distance, and (wherein downloading rate is to carry out data transmission between two nodes
The measurement of speed, the distance between downloading rate the biggest explanation two node is the nearest, so downloading rate and two
Distance between node is inversely proportional to；Two-way time is the time carrying out the most complete communication between two nodes,
The shortest explanation two two-way time euclidean distance between node pair is the nearest；Transmission information when packet loss is communication between two nodes
The tolerance of integrality, packet loss is the biggest, shows to transmit between two nodes the most imperfect of information, i.e. two
Internodal distance is the biggest) so that the distance value between two nodes finally determined is more reliable such that it is able to
The distribution carrying out content for CDN system provides more reliable scheduling foundation, it is ensured that the Service Quality to user
Amount, thus contribute to promoting Consumer's Experience.
Message transmission rate in present embodiment and be directly monitored two-way time obtaining；Wherein, past
Time of returning is exactly sender in simple terms from the beginning of sending data, to receiving the confirmation from reciever
The time experienced, it is important performance indications in a computer network for it, represents from transmitting terminal
Transmission data start, and (receiving terminal receives after data soon to receive confirmation from receiving terminal to transmitting terminal
Send confirm), the time delay altogether experienced, RTT value by three part decisions: i.e. link propagation time,
Queuing in the caching processing time and router of end system and the time of process；Wherein, before two
The value of individual part is relatively fixed as a TCP connection, the queuing in the caching of router and the time of process
Can change, so the change of RTT reflects to a certain extent along with the change of whole network congestion degree
The change of network congestion degree.
Packet loss (Loss Tolerance or Packet Loss Rate) refers to lost data packet number in test
Accounting for the ratio of sent data group, computational methods are: " [(incoming message-outgoing message)/input report
Literary composition] * 100% ", the packet loss in present embodiment is that the data that first node sends deduct Section Point reception
To the data that send divided by first node of data be multiplied by very.
As shown in Figure 6, an embodiment of invention also provides for the topological structure generation system of a kind of CDN
In, routing table generation module includes:
Euclidean distance between node pair determines unit, for according to including that all fringe nodes and described target source node exist
In node in the historical basis network information each other of node two-by-two determine described in two-by-two between node
Euclidean distance between node pair；
Minimum spanning tree unit, for generating minimum spanning tree according to described euclidean distance between node pair；
Access path determines unit, for determining all fringe nodes obtained according to described minimum spanning tree
Path to described object edge node is described access path；
Routing table signal generating unit, for generating described routing table according to described access path.
In present embodiment, from the overall situation, determine the distance descended between each node, and according to all of
Euclidean distance between node pair generates minimum spanning tree so that can direct basis when control centre is user scheduling node
Minimum spanning tree determines the node that distance users is nearest, decreases the reaction time of scheduling.
Type of service described in any of the above-described embodiment of the disclosure at least includes live and/or program request, more
Concrete can also be for live in current hotspot file, non-thermal dot file, and working as in program request
Front focus file, non-thermal dot file etc..
Embodiment of the method described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
By the description of above embodiment, those skilled in the art is it can be understood that arrive each enforcement
Example can add the mode of required general hardware platform by software and realize, naturally it is also possible to pass through hardware.
Based on such understanding, the part that prior art is contributed by technique scheme the most in other words can
Embodying with the form with software product, this computer software product can be stored in computer-readable and deposit
In storage media, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a calculating
Machine equipment (can be personal computer, server, or the network equipment etc.) perform each embodiment or
The method described in some part of person's embodiment.
Those skilled in the art it should be appreciated that embodiment of the disclosure the method that can be provided as, system or
Computer program.Therefore, the disclosure can use complete hardware embodiment, complete software implementation,
Or combine the form of embodiment in terms of software and hardware.And, the disclosure can use one or more
The computer-usable storage medium wherein including computer usable program code (includes but not limited to disk
Memory and optical memory etc.) form of the upper computer program implemented.
The disclosure is with reference to method, equipment (system) and the computer program product according to disclosure embodiment
The flow chart of product and/or block diagram describe.It should be understood that can be by computer program instructions flowchart
And/or flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and
/ or the combination of square frame.Can provide these computer program instructions to all-purpose computer, special-purpose computer,
The processor of Embedded Processor or other programmable data processing device is to produce a machine so that logical
The instruction of the processor execution crossing computer or other programmable data processing device produces for realizing at stream
The function specified in one flow process of journey figure or multiple flow process and/or one square frame of block diagram or multiple square frame
Device.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
In instruction produce and include the manufacture of command device, this command device realize in one flow process of flow chart or
The function specified in multiple flow processs and/or one square frame of block diagram or multiple square frame.These computer programs
Instruction also can be loaded in computer or other programmable data processing device so that computer or other
On programmable device, execution sequence of operations step is to produce computer implemented process, thus at computer
Or the instruction performed on other programmable devices provides for realizing in one flow process of flow chart or multiple flow process
And/or the step of the function specified in one square frame of block diagram or multiple square frame.
Last it is noted that above example is only in order to illustrate the technical scheme of the disclosure, rather than to it
Limit；Although the disclosure being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of the disclosure each embodiment technical scheme.
Claims (10)
1. a Topological Structure Generation for CDN, including:
Receive the whole network CDN node nodal information, described nodal information at least include node attribute information and
Node traffic type information；
The source node of the whole network is determined according to described node attribute information；
Determine the source described node traffic type corresponding to consistent with the type of service of described business to be supplied
Node is target source node；
Determine the access path of all fringe nodes extremely described target source node, to generate routing table；
Issue described routing table to described all fringe nodes to generate described topological structure.
Method the most according to claim 1, wherein, described determines that all fringe nodes are to described mesh
The access path of mark source node includes:
According to the node including all fringe nodes and described target source node in interior node phase two-by-two
The historical basis network information between Hu determine described in euclidean distance between node pair between node two-by-two；
The the shortest of all fringe nodes extremely described target source node is determined according to the described euclidean distance between node pair determined
Path is described access path.
Method the most according to claim 1, wherein, described determines that all fringe nodes are to described mesh
The access path of mark source node includes:
Mutual according to the node two-by-two in the node including all fringe nodes and described target source node
Between the historical basis network information determine described in euclidean distance between node pair between node two-by-two；
Minimum spanning tree is generated according to described euclidean distance between node pair；
Determine that all fringe nodes obtained according to described minimum spanning tree to the path of object edge node are
Described access path.
4. according to the method described in any one of claim 1-3, wherein, the described historical basis network information
At least include: internodal message transmission rate, two-way time and packet loss.
5. according to the method described in any one of claim 1-3, wherein, described type of service at least includes
Live and/or program request.
6. the topological structure of CDN generates a system, including:
Nodal information receiver module, for receiving the nodal information of the whole network CDN node, described nodal information
At least include node attribute information and node traffic type information；
Source node determines module, for determining the source node of the whole network according to described node attribute information；
Target source node determines module, for determining the institute consistent with the type of service of described business to be supplied
Stating the source node corresponding to node traffic type is target source node；
Routing table generation module, for determining the access path of all fringe nodes extremely described target source node,
To generate routing table；
Topological structure generation module, is used for issuing described routing table to described all fringe nodes to generate institute
State topological structure.
Topological structure the most according to claim 6 generates system, and wherein, described routing table generates mould
Block includes:
Euclidean distance between node pair determines unit, for according to including that all fringe nodes and described target source node exist
In node determine in the interior node two-by-two historical basis network information each other described in two-by-two node it
Between euclidean distance between node pair；
Access path determines unit, for determining all fringe nodes according to the described euclidean distance between node pair determined
Shortest path to described target source node is described access path；
Routing table signal generating unit, for generating described routing table according to described access path.
Topological structure the most according to claim 6 generates system, and wherein, described routing table generates mould
Block includes:
Euclidean distance between node pair determines unit, for according to including that all fringe nodes and described target source node exist
In node in the historical basis network information each other of node two-by-two determine described in two-by-two between node
Euclidean distance between node pair；
Minimum spanning tree unit, for generating minimum spanning tree according to described euclidean distance between node pair；
Access path determines unit, for determining all fringe nodes obtained according to described minimum spanning tree
Path to described object edge node is described access path；
Routing table signal generating unit, for generating described routing table according to described access path.
9. generate system, wherein, described history according to the topological structure described in any one of claim 6-8
Basic network information at least includes: internodal message transmission rate, two-way time and packet loss.
10. generate system, wherein, described industry according to the topological structure described in any one of claim 6-8
Service type at least includes live and/or program request.
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| CN109951338A (en) * | 2019-03-28 | 2019-06-28 | 北京金山云网络技术有限公司 | CDN network configuration method, configuration device, electronic equipment and storage medium |
| CN110896566A (en) * | 2019-11-18 | 2020-03-20 | 腾讯科技（深圳）有限公司 | Channel determination method and device |
| CN115695560A (en) * | 2021-07-23 | 2023-02-03 | 伊姆西Ip控股有限责任公司 | Content distribution method, electronic device, and computer program product |
| WO2023050605A1 (en) * | 2021-09-28 | 2023-04-06 | 天翼物联科技有限公司 | Video distribution control method, system and apparatus, and storage medium |
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