CN109274733A - Multilayer based on device class dispatches system - Google Patents
Multilayer based on device class dispatches system Download PDFInfo
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- CN109274733A CN109274733A CN201811034381.XA CN201811034381A CN109274733A CN 109274733 A CN109274733 A CN 109274733A CN 201811034381 A CN201811034381 A CN 201811034381A CN 109274733 A CN109274733 A CN 109274733A
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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
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
-
- 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
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
-
- 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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1021—Server selection for load balancing based on client or server locations
-
- 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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1023—Server selection for load balancing based on a hash applied to IP addresses or costs
-
- 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
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Computer And Data Communications (AREA)
Abstract
The present invention relates to a kind of network system, especially a kind of multilayer scheduling system based on device class for improving server reliability and efficiency.Multilayer based on device class dispatches system, system is dispatched including DNS, DNS scheduling system is connected with first layer high performance content server and HTTP redirection scheduling system, system is dispatched in the HTTP redirection, is connected with second layer high performance content server and the slightly secondary content server of second layer performance.Multilayer based on device class of the invention dispatches system, the scheduling to equipment layering, not only improves reliability of service compared to individual DNS scheduling, but also improve the utilization rate of equipment.
Description
Technical field
The present invention relates to a kind of network system, especially it is a kind of improve server reliability and efficiency based on device class
Multilayer dispatch system.
Background technique
Existing CDN scheduling system is roughly divided into the scheduling based on DNS name resolution system, or based on HTTP redirection
Scheduling.
Domain name mapping based on DNS, this scheduling is that site for service authoritative domain name by way of CNAME is resolved to CDN
The authoritative DNS of manufacturer.This mode is mutually indepedent between site for service and CDN.This scheduling mode is client initiated domain
To local domain name system, the DNS that local domain name system is sent to the authorization of targeted website is parsed name analysis request, is passed through
Parsing power is sent to the authoritative DNS of CDN manufacturer by the mode of CNAME.The authoritative DNS of CDN manufacturer does dissection process to domain name, will
Local domain name system used in client, local domain name system are returned to close to client CDN Edge Server node IP address
Server ip address is transmitted to client again.At this time client has been known that the CDN dispatch server node of website domain name
Address, can to this node initiate content requests service.The scheduling of this mode, be exactly pipe is responsible in CDN authority's domain name mapping
Manage the scheduling of Servers-all node.The clothes that this scheduling mode needs the scheduling system administration based on DNS name resolution all
Business device link and service shape can occur in Edge Server due to the influence of the caching entry-into-force time (TTL) of local domain name system
In the problematic situation of condition, it is delayed relatively high.
Redirection mechanism based on HTTP, this flow lead arrival for first passing through a step domain name mapping or other modes
Redirect the dispatch server of parsing.Client request reaches Redirect Server, redirects dispatch server according to client
IP address, returning to (such as HTTP302 return) by special redirection will take in user's request scheduling to optimal server
Business.Although this mode can reach the timeliness of service response, time delay when going wrong for Edge Server is not
It is very high.But link transmission level, link consumption is too big for small documents (such as page of text).Redirect dispatch service
The infrastructure devices of device management are often the equipment in a region, can not accomplish region analytical rectification.
Summary of the invention
In view of this, it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of raising server reliabilities
System is dispatched with the multilayer based on device class of efficiency.
The present invention solve its technical problem be using technical solution: multilayer based on device class scheduling system, including
DNS dispatches system, and DNS scheduling system is connected with first layer high performance content server and HTTP redirection scheduling system, institute
The HTTP redirection scheduling system stated is connected with second layer high performance content server and the slightly secondary content server of second layer performance.
Further, for the present invention is better achieved, following settings are especially used: in the DNS scheduling system, to clothes
Business device carries out first time performance classification, and classification results respectively correspond first layer high performance content server and HTTP redirection scheduling
System.
Further, to be better achieved the present invention, following settings are especially used: when the described first time performance classification
Measuring performance indicator includes server configuration, bandwidth resources and link-quality.
Further, for the present invention is better achieved, following settings are especially used: in HTTP redirection scheduling system,
Second of performance classification is carried out to server, classification results respectively correspond the second high performance content server and second layer performance is omited
Secondary content server.
Further, to be better achieved the present invention, following settings are especially used: when described second of performance classification
Measuring performance indicator includes server configuration, bandwidth resources and link-quality.
Further, for the present invention is better achieved, following settings are especially used: after first time performance classification, client
Request reaches HTTP redirection server, and HTTP redirection dispatch server passes through special weight according to the IP address of client
Orientation is returned and will be serviced in user's request scheduling to optimal server.
Further, for the present invention is better achieved, following settings are especially used: dispatching configuration strategy in HTTP redirection
When dispatching, if the server itself where location finding HTTP redirection scheduling system is included in positioned scheduling plan
Inside region slightly, then content delivery service directly is provided to client.
Further, for the present invention is better achieved, following settings: client ip and local dns address area are especially used
When domain is inconsistent, dispatcher-controlled territory correction is done, redirects that the content server of client ip corresponding region.
Further, for the present invention is better achieved, following settings are especially used: when carrying out first performance classification, CDN
The authoritative DNS of manufacturer does dissection process to domain name, is configured according to DNS domain name scheduling strategy, will be close to CDN edge content server
Node IP address returns to local domain name system used in client, and local domain name system is again by edge content server ip
Location is transmitted to client.
Further, to be better achieved the present invention, following settings are especially used: in the DNS scheduling system and
Service healthiness detection module is provided in HTTP redirection scheduling system.
The beneficial effects of the present invention are: the multilayer of the invention based on device class dispatches system, to the tune of equipment layering
Degree, not only improves reliability of service, but also improve the utilization rate of equipment.Because the TTL entry-into-force time of local domain name system deposits
The reason of, the feedback of server apparatus health degree can be slow.If the slightly secondary server of performance, is directly deployed in DNS's
Scheduling the inside, may cause content service transmission to influence for a long time there will be biggish.The slightly secondary server of performance, deployment
Solves the abnormal influence duration to content service of device service in HTTP redirection level.HTTP redirection scheduling, to equipment
The inspection cycle of health degree is shorter, and more important is the influences for eliminating local domain name system TTL (entry-into-force time).It redirects and adjusts
In the system of degree, faster to the perception of the health degree of equipment, detection cycle is shorter.Secondly it redirects in scheduling process, in client
When holding dns address region used in IP and client network outlet inconsistent, dispatcher-controlled territory is corrected, and is redirected that
The content server of client ip corresponding region.Multilayer dispatching effect not only improves reliability of service, but also improves equipment
Utilization rate.
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 a kind of structural block diagram of the multilayer scheduling system of the invention based on device class；
Fig. 2 is a kind of structural schematic diagram of the multilayer scheduling system of the invention based on device class.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than comprehensive embodiment.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Embodiment 1:
As shown in Figure 1 and Figure 2, the multilayer of the invention based on device class dispatches system, including DNS dispatches system, should
DNS scheduling system is connected with first layer high performance content server and HTTP redirection scheduling system, the HTTP redirection
Scheduling system is connected with second layer high performance content server and the slightly secondary content server of second layer performance.It is of the invention based on
The multilayer of device class dispatches system, and the scheduling to equipment layering not only improves reliability of service, but also improve the benefit of equipment
With rate.Because the TTL entry-into-force time of local domain name system there are the reason of, the feedback of server apparatus health degree can be slow.
If the slightly secondary server of performance, directly it is deployed in inside the scheduling of DNS, content service transmission may be made there will be biggish
The influence of growth time.The slightly secondary server of performance is deployed in HTTP redirection level and solves device service exception to content
The influence duration of service.HTTP redirection scheduling, shorter to the inspection cycle of equipment health degree, more important is eliminate local
The influence of domain name system TTL (entry-into-force time).In the system for redirecting scheduling, faster to the perception of the health degree of equipment, detection
Period is shorter.Secondly it redirects in scheduling process, exports used dns address region not in client ip and client network
When consistent, dispatcher-controlled territory is corrected, and redirects that the content server of client ip corresponding region.Multilayer scheduling effect
Fruit not only improves reliability of service, but also improves the utilization rate of equipment.
Performance omits the probability that service problem occurs in secondary device and wants higher, and dns resolution TTL delay will lead to service-aware change
Slowly, faster, improving equipment again while not reducing service quality in this way makes for the HTTP redirection module perception of multilayer scheduling
With rate.
Embodiment 2:
In the DNS scheduling system, first time performance classification is carried out to server, classification results respectively correspond first layer
System is dispatched in high performance content server and HTTP redirection.
Measurement performance indicator when the described first time performance classification includes server configuration, bandwidth resources and link matter
Amount.
In HTTP redirection scheduling system, second of performance classification is carried out to server, classification results respectively correspond the
Two high performance content servers and the slightly secondary content server of second layer performance.
Measurement performance indicator when described second of performance classification includes server configuration, bandwidth resources and link matter
Amount.
After first time performance classification, client request reaches HTTP redirection server, HTTP redirection dispatch server
According to the IP address of client, being returned by special redirection will service in user's request scheduling to optimal server.
When HTTP redirection scheduling configuration strategy is dispatched, if where location finding HTTP redirection scheduling system
Server itself be included in positioned scheduling strategy region inside, then directly to client provide content delivery service.
When client ip and inconsistent local dns address area, dispatcher-controlled territory correction is done, client is redirected that
Hold the content server of the corresponding region IP.
When carrying out first performance classification, the authoritative DNS of CDN manufacturer does dissection process to domain name, is dispatched according to DNS domain name
Strategy configuration, will be close to CDN edge content server node IP address and returns to local domain name system used in client, this
Edge content server ip address is transmitted to client again by region name system.
Configuration dispatches configuration strategy based on HTTP redirection based on DNS domain name scheduling strategy and configuration.Firstly the need of will set
Back-up class is divided into the slightly secondary server apparatus of high-performance server equipment and performance.Here measuring performance indicator includes but not
It is limited to server configuration, bandwidth resources, link-quality.Inside scheduling strategy based on DNS domain name, set comprising all high-performance
It is standby.Scheduling configuration strategy based on HTTP redirection can configure, can also be other than the high performance server apparatus of configuration
The slightly secondary equipment of some performances is configured above finer region.
Domain name based on DNS dispatches system, is in fact exactly client's domain name mapping from CNAME authorization excessively to the DNS of CDN manufacturer
Scheduling system.This mode is mutually indepedent between site for service and CDN.This scheduling mode is that client initiates domain name mapping
It requests to local domain name system, the DNS that local domain name system is sent to the authorization of targeted website is parsed, and passes through CNAME's
Parsing power is sent to the authoritative DNS of CDN manufacturer by mode.The authoritative DNS of CDN manufacturer does dissection process to domain name, according to DNS domain
Name scheduling strategy configuration will be close to client's CDN edge content server node IP address and return to used in client locally
Edge content server ip address is transmitted to client again by domain name system, local domain name system.This is that multilayer scheduling system is worked as
The scheduling of the middle first step has been dispatched to above the relatively high equipment of performance first according to based on DNS domain name scheduling strategy.
Scheduling system based on HTTP redirection.After previous step dns resolution scheduling is completed, client is to high performance service
Device equipment initiates content service request.It is deployed with HTTP redirection system on these high performance server apparatus, certainly
It can be carried out redirecting content server according to business, HTTP redirection system may not be disposed above some content servers
System, then these systems can directly provide content transmission.For being deployed with the content server of HTTP redirection system, can be based on
HTTP redirection scheduling configuration strategy is dispatched.Region configuration more refines inside this strategy, it is all can service equipment, packet
Containing the slightly secondary all faces herein of high-performance and performance.HTTP redirection dispatches system and can do redirection according to strategy here and adjust
Degree directly services.When being dispatched based on HTTP redirection scheduling configuration strategy, if location finding HTTP redirection tune
Server itself where degree system is included in inside the region of positioned scheduling strategy, then directly provides content to client
Transmission service, does not redirect.The scheduling server slightly secondary in discovery performance is redirected simultaneously, is also possible to certainly comprising high property
There is service fault in the server apparatus health degree of energy, then no longer dispatches to problematic server apparatus.Redirect scheduling
Other content server address can be issued client, then right client can think that other content server is initiated content and asked
It asks.
Embodiment 3:
Preferably, being advanced optimized on the basis of the above embodiments for the present invention is better achieved, especially use
Following settings: service healthiness detection module is provided in the DNS scheduling system and HTTP redirection scheduling system.
As shown in Fig. 2, entirely the operation of the multilayer scheduling system based on device class includes client, home domain name system
System, DNS scheduling system, HTTP redirection system and content server；Its operation order is followed successively by client and initiates 101 services
Domain name mapping, local domain name system carry out service domain name mapping, when with first layer high performance content server matches, DNS tune
Degree system returns to 103 content server address, and local domain name system returns to 104 content server address, and client carries out in 201
Hold server request, content server feeds back 202 content transmissions；When with HTTP redirection system matches, client carries out 301
Content service request, HTTP redirection system feedback client 302 redirect scheduling, and client is sent to content server again
311 content service requests, content server feed back 312 content transmissions；If HTTP redirection system health monitors system feedback
Can slightly secondary content server have exception, that is, above 301 transmission it is problematic when, carry out 401 service；When client is sent out
When sending 401 content service request, 402 content transmission of HTTP redirection system feedback.
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 multilayer based on device class dispatches system, it is characterised in that: dispatch system including DNS, which dispatches system connection
There are a first layer high performance content server and HTTP redirection scheduling system, the described HTTP redirection scheduling system is connected with the
Two layers of high performance content server and the slightly secondary content server of second layer performance.
2. the multilayer according to claim 1 based on device class dispatches system, it is characterised in that: the DNS scheduling
In system, to server carry out first time performance classification, classification results respectively correspond first layer high performance content server and
System is dispatched in HTTP redirection.
3. the multilayer according to claim 2 based on device class dispatches system, it is characterised in that: the first time property
Measurement performance indicator when can classify includes server configuration, bandwidth resources and link-quality.
4. the multilayer according to claim 3 based on device class dispatches system, it is characterised in that: in HTTP redirection tune
In degree system, second of performance classification is carried out to server, classification results respectively correspond the second high performance content server and the
The slightly secondary content server of two layers of performance.
5. the multilayer according to claim 4 based on device class dispatches system, it is characterised in that: second of property
Measurement performance indicator when can classify includes server configuration, bandwidth resources and link-quality.
6. the multilayer according to claim 5 based on device class dispatches system, it is characterised in that: first time performance classification
Afterwards, client request reaches HTTP redirection server, and HTTP redirection dispatch server passes through according to the IP address of client
Special redirection returns and will service in user's request scheduling to optimal server.
7. the multilayer according to claim 6 based on device class dispatches system, it is characterised in that: in HTTP redirection tune
When degree configuration strategy is dispatched, determine if the server itself where location finding HTTP redirection scheduling system is included in
Inside the region of the scheduling strategy of position, then content delivery service directly is provided to client.
8. the multilayer according to claim 7 based on device class dispatches system, it is characterised in that: client ip and local
When dns address region is inconsistent, dispatcher-controlled territory correction is done, redirects that the content service of client ip corresponding region
Device.
9. the multilayer according to claim 8 based on device class dispatches system, it is characterised in that: carrying out first performance
When classification, the authoritative DNS of CDN manufacturer does dissection process to domain name, is configured according to DNS domain name scheduling strategy, will be close to the edge CDN
Content server node IP address returns to local domain name system used in client, and local domain name system is again by edge content
Server ip address is transmitted to client.
10. the multilayer according to claim 1 based on device class dispatches system, it is characterised in that: in the DNS tune
Service healthiness detection module is provided in degree system and HTTP redirection scheduling system.
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| CN111641732A (en) * | 2020-06-01 | 2020-09-08 | 湖南快乐阳光互动娱乐传媒有限公司 | Intelligent scheduling method and device |
| CN112532425A (en) * | 2020-11-04 | 2021-03-19 | 浙江大学 | Message routing configuration method facing edge calculation |
| CN117938807A (en) * | 2024-03-21 | 2024-04-26 | 北京火山引擎科技有限公司 | Method, device and system for carrying out portrayal on local DNS (Domain name System) for CDN (content delivery network) |
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