CN102932451A - Solving system specific to content distribution network - Google Patents
Solving system specific to content distribution network Download PDFInfo
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- CN102932451A CN102932451A CN2012104294594A CN201210429459A CN102932451A CN 102932451 A CN102932451 A CN 102932451A CN 2012104294594 A CN2012104294594 A CN 2012104294594A CN 201210429459 A CN201210429459 A CN 201210429459A CN 102932451 A CN102932451 A CN 102932451A
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Abstract
The invention discloses a solving system specific to content distribution network. The system is applied to clients, local domain name modules and all modules of websites. The system is characterized in that the system comprises an analysis module, a detection module and a scheduling module. The system has the advantage that the problems that in prior art, content distribution network (CDN) service providers are mutually isolated, the number of nodes and server distribution of a single CDN service provider can not overlay all networks and really stable and intelligent CDN service can not be supplied are solved.
Description
Technical field
The present invention relates to internet C DN(Content Delivery Network, content distributing network) field, specifically, relate to a kind of resolution system for content distributing network.
Background technology
Along with the fast development of the Internet, people have been accustomed to being full of in daily life various colourful contents.And increasing for the demand of network, they wish that the response speed of access websites can increase, CDN(Content Delivery Network, content distributing network) give birth to because of fortune.
CDN is by increasing the new network architecture of one deck in existing Internet, and the content of website is published near user's network, makes the user can obtain required content nearby, improves the response speed of user's access websites.Thereby CDN can obviously improve the efficient of information flow in the Internet network.Solve because network broadband is little, user's visit capacity is large, the unequal problem of network point distribution technically comprehensively, improve the response speed of user's access websites.
In the prior art, the implementation of CDN has following two kinds of situations:
1, traditional CDN, this scheme is a kind of simple content distributing network.Its basic ideas are to avoid as far as possible might affecting on the Internet bottleneck and the link of data transmission bauds and stability, one deck virtual network on existing Internet basic that consists of by place node server everywhere at network leads user's request on the nearest service node of user again.Make the user can obtain required content nearby, solve the situation of Internet network congestion, improve the response speed of user's access websites.
2, based on the CDN of weight or probability, this scheme is a kind of improvement to traditional C DN implementation, and rule and the weight good according to prior manual configuration are judged user's affiliated area or network, select corresponding CDN service provider or service node.And user's request is directed to the highest CDN node of weight again.Its objective is that the domain name that makes operator can switch between different CDN service providers, solve the low problem of single CDN provider network coverage rate, user website can be switched between a plurality of CDN service provider.
But present CDN service provider is mutually isolated, and all-network can not be accomplished again to cover fully by single CDN service provider, the situation that the user network access to web page is slow or webpage can't be accessed therefore usually occurs.Even can realize between each CDN service provider, switching by the manual configurations such as rule, weight that conduct interviews, also be difficult to stability, the correctness of assurance system operation.And network environment itself is dynamic change, and the rule of a static state can't all adapt at all net environments complicated and changeable.
Summary of the invention
Technical problem to be solved by this invention provides a kind of resolution system for content distributing network, isolated mutually to solve existing CDN service provider, node number and the server distribution of single CDN service provider can not cover all-network, and the problem of real stable, intelligent CDN service can't be provided.
For solving the problems of the technologies described above, the invention provides a kind of resolution system for content distributing network, be applied in client, home domain name module and all modules of website, it is characterized in that, this system comprises: parsing module, detecting module and scheduler module, wherein
Described parsing module, couple mutually with described detecting module and home domain name module, be used for receiving the domain name mapping solicited message that client sends by described home domain name module, IP address information according to the local domain famous model server that stores, geographical position and the ISP of ISP under the differential threshold name analysis solicited message, process according to the distributed monitoring node address information of the geographical position under described this domain name mapping solicited message and ISP and combination all modules receptions from described website again, from described distributed monitoring node address, search with described this domain name mapping solicited message under the nearest monitor node of the geographical position monitor node middle distance identical with ISP belonging network type, and search the CDN service provider corresponding with the domain name resolution request message in this monitor node scope, and the object information after will searching sends to described detecting module;
Described detecting module, couple mutually with described parsing module and described scheduler module, be used for receiving the object information of described parsing module, and at least one described CDN service provider by comprising in the object information, the parallel accessing request information to this CDN service provider transmission real-time dynamic monitoring, and receive response speed and the availability of efficient information of returning with this CDN service provider, send to described scheduler module;
Described scheduler module, couple mutually with described detecting module and described home domain name module, response speed and availability of efficient information for the CDN service provider that receives described detecting module transmission, sequencing according to the transmission of detecting module result of detection, successively the resulting result of detecting module real-time detection is analyzed, and with the length of the time decision response time of the result of detection that receives, obtain availability and the performance of current a plurality of CDN service providers in affiliated service range, and it is the shortest to obtain the response time, the address of the CDN service provider that availability is the highest feeds back to described client by the home domain name module.
Further, wherein, include an authoritative dns server in the described parsing module, be used for according to the IP address information that stores local dns server geographical position and ISP under the differential threshold name analysis solicited message.
Further, wherein, described scheduler module, further also be used for coming the resulting result of real-time detection to analyze described detecting module by the analysis to HTML (Hypertext Markup Language) responsive state code, whether availablely obtain current C DN service node, if available, then feed back to described client as final result by the home domain name module; If unavailable, then next result of detection is analyzed, feed back to described client until obtain available CDN address of service by the home domain name module.
Compared with prior art, a kind of resolution system for content distributing network of the present invention has reached following effect:
1, the present invention makes the effective combination of node of each cooperation CDN service provider, realizes that network is complementary.User website can't be accessed when having avoided single CDN service provider fault, the website is continued available.
2, the Real Time Monitoring of the present invention by the Distributed probing node makes the objective reactive terminal user's of result of detection access impression, with lead in the CDN service provider of all cooperations nearby the best node of performance of terminal use, ensures the best access performance of user website.
3, the present invention has guaranteed the intelligent of content distributing network, need not the manual configurations such as rule and weight that conduct interviews, avoid human factor on the stability of system operation, the impact that correctness causes, realized the performances such as automatic switchover between different CDN operator, automatic detection and intelligent scheduling.
Description of drawings
Fig. 1 is the structured flowchart of the described a kind of system for content distributing network of the embodiment of the invention one.
Embodiment
In the middle of specification and claim, used some vocabulary to censure specific components.Those skilled in the art should understand, and hardware manufacturer may be called same assembly with different nouns.This specification and claims are not used as distinguishing the mode of assembly with the difference of title, but the criterion that is used as distinguishing with the difference of assembly on function.Be an open language mentioned " comprising " in the middle of specification and the claim in the whole text, therefore should be construed to " comprise but be not limited to "." roughly " refer in acceptable error range, those skilled in the art can solve the technical problem in the certain error scope, substantially reach described technique effect.In addition, " couple " word and comprise any means that indirectly are electrically connected that directly reach at this.Therefore, be coupled to one second device if describe a first device in the literary composition, then represent described first device and can directly be electrically connected at described the second device, or indirectly be electrically connected to described the second device by other devices or connection means.The specification subsequent descriptions is for implementing better embodiment of the present invention, and right described description is to illustrate that rule of the present invention is purpose, is not to limit scope of the present invention.Protection scope of the present invention is as the criterion when looking the claims person of defining.
Below in conjunction with accompanying drawing the present invention is described in further detail, but not as a limitation of the invention.
As shown in Figure 1, the embodiment of the invention one described a kind of resolution system for content distributing network, be applied to client 104, local dns (Domain Name System, domain name system) in all module 106 of module 105 and website, this system comprises: parsing module 101, detecting module 102 and scheduler module 103, wherein
Described parsing module 101, couple mutually with described detecting module 102 and local dns module 105, be used for receiving the domain name mapping solicited message that client 104 sends by described local dns module 105, IP address information according to the local dns server that stores, geographical position and ISP(Internet Service Provider under the differential threshold name analysis solicited message, ISP), process according to the distributed monitoring node address information of the geographical position under described this domain name mapping solicited message and ISP and combination all modules 106 receptions from described website again, from described distributed monitoring node address, search with described this domain name mapping solicited message under the nearest monitor node of the geographical position monitor node middle distance identical with ISP belonging network type, and search the CDN service provider corresponding with the domain name resolution request message in this monitor node scope, and the object information after will searching sends to described detecting module 102.
The operation of this parsing module is in the specific embodiment of the invention:
If the geographical position under the domain name mapping solicited message that client is sent and ISP then search available monitor node without available monitor node in larger scope.As: affiliated geographical position and ISP are Hebei province's telecommunications, but search without monitor node in Hebei province's communication network, then search the CDN service provider corresponding with the domain name resolution request message in the monitor node scope in the communication network of North China.
Include an authoritative dns server in the parsing module 101, be used for according to the IP address information that stores local dns server geographical position and ISP under the differential threshold name analysis solicited message.
Described detecting module 102, couple mutually with described parsing module 101 and described scheduler module 103, be used for receiving the object information of described parsing module 101, and at least one described CDN service provider by comprising in the object information, the parallel accessing request information to this CDN service provider transmission real-time dynamic monitoring, and receive response speed and the availability of efficient information of returning with this CDN service provider, send to described scheduler module 103.
The dynamic monitoring that this is real-time, response speed and availability and the performance of availability of efficient in affiliated service range of a plurality of described CDN service provider that carries out comprising in the judged result information.
Described scheduler module 103, couple mutually with described detecting module 102 and described local dns module 105, response speed and availability of efficient information for the CDN service provider that receives described detecting module 102 transmissions, sequencing according to the transmission of detecting module 102 result of detections, successively the resulting result of detecting module 102 real-time detections is analyzed, and with the length of the time decision response time of the result of detection that receives, obtain availability and the performance of current a plurality of CDN service providers in affiliated service range, and it is the shortest to obtain the response time, the address of the CDN service provider that availability is the highest feeds back to described client 104 by local dns module 105.
It is by to HTTP(HyperText Transfer Protocol that 103 couples of resulting results of detecting module 102 real-time detections of scheduler module analyze, HTML (Hypertext Markup Language)) analysis of responsive state code, whether availablely obtain current C DN service node, if availablely then feed back to client as final result, if unavailablely then next result of detection is analyzed, until obtain available CDN address of service.
The present invention is based on dns resolution and in conjunction with distributed Real-time Monitor Technique, the resolution system of a kind of new content distributing network that provides.Compared with prior art, a kind of resolution system for content distributing network of the present invention has reached following effect:
1, the present invention makes the effective combination of node of each cooperation CDN service provider, realizes that network is complementary.User website can't be accessed when having avoided single CDN service provider fault, the website is continued available.
2, the Real Time Monitoring of the present invention by the Distributed probing node makes the objective reactive terminal user's of result of detection access impression, with lead in the CDN service provider of all cooperations nearby the best node of performance of terminal use, ensures the best access performance of user website.
3, the present invention has guaranteed the intelligent of content distributing network, need not the manual configurations such as rule and weight that conduct interviews, avoid human factor on the stability of system operation, the impact that correctness causes, realized the performances such as automatic switchover between different CDN operator, automatic detection and intelligent scheduling.
Above-mentioned explanation illustrates and has described some preferred embodiments of the present invention, but as previously mentioned, be to be understood that the present invention is not limited to the disclosed form of this paper, should not regard the eliminating to other embodiment as, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of claims of the present invention.
Claims (3)
1. the resolution system for content distributing network is applied to it is characterized in that in client, home domain name module and all modules of website, and this system comprises: parsing module, and detecting module and scheduler module, wherein,
Described parsing module, couple mutually with described detecting module and home domain name module, be used for receiving the domain name mapping solicited message that client sends by described home domain name module, IP address information according to the local domain famous model server that stores, geographical position and the ISP of ISP under the differential threshold name analysis solicited message, process according to the distributed monitoring node address information of the geographical position under described this domain name mapping solicited message and ISP and combination all modules receptions from described website again, from described distributed monitoring node address, search with described this domain name mapping solicited message under the nearest monitor node of the geographical position monitor node middle distance identical with ISP belonging network type, and search the CDN service provider corresponding with the domain name resolution request message in this monitor node scope, and the object information after will searching sends to described detecting module;
Described detecting module, couple mutually with described parsing module and described scheduler module, be used for receiving the object information of described parsing module, and at least one described CDN service provider by comprising in the object information, the parallel accessing request information to this CDN service provider transmission real-time dynamic monitoring, and receive response speed and the availability of efficient information of returning with this CDN service provider, send to described scheduler module;
Described scheduler module, couple mutually with described detecting module and described home domain name module, response speed and availability of efficient information for the CDN service provider that receives described detecting module transmission, sequencing according to the transmission of detecting module result of detection, successively the resulting result of detecting module real-time detection is analyzed, and with the length of the time decision response time of the result of detection that receives, obtain availability and the performance of current a plurality of CDN service providers in affiliated service range, and it is the shortest to obtain the response time, the address of the CDN service provider that availability is the highest feeds back to described client by the home domain name module.
2. a kind of resolution system for content distributing network as claimed in claim 1, it is characterized in that, include an authoritative dns server in the described parsing module, be used for according to the IP address information that stores local dns server geographical position and ISP under the differential threshold name analysis solicited message.
3. a kind of resolution system for content distributing network as claimed in claim 1, it is characterized in that, described scheduler module, further also be used for coming the resulting result of real-time detection to analyze described detecting module by the analysis to HTML (Hypertext Markup Language) responsive state code, whether availablely obtain current C DN service node, if available, then feed back to described client as final result by the home domain name module; If unavailable, then next result of detection is analyzed, feed back to described client until obtain available CDN address of service by the home domain name module.
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