CN106412063A - CDN node detection and resource scheduling system and method in education network - Google Patents
CDN node detection and resource scheduling system and method in education network Download PDFInfo
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- CN106412063A CN106412063A CN201610865750.4A CN201610865750A CN106412063A CN 106412063 A CN106412063 A CN 106412063A CN 201610865750 A CN201610865750 A CN 201610865750A CN 106412063 A CN106412063 A CN 106412063A
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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
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0876—Network utilisation, e.g. volume of load or congestion level
- H04L43/0894—Packet rate
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- 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]
Abstract
The invention discloses a CDN node detection and resource scheduling system and method in an education network. The system comprises a URL collection subsystem used for collecting a domain name address accessed by a client in the education network and stores the collected domain name address in a domain name library; a preprocessing server used for reading the domain name address from the domain name library and inserting the domain name address in a domain name queue; a CDN node detection system used for reading the domain name address from the domain name queue, detecting a CDN acceleration node, and when the domain name address is detected to be accelerated by the CDN acceleration node, storing the domain name address and an IP address of the corresponding CDN acceleration node in a CDN node library of the education network; and a data processing server used for scheduling an optimal CDN acceleration phase for a client according to the request of the client, so as to accomplish the resource scheduling of the CDN node library and realize a CDN node detection and quality of service monitoring resource scheduling method in a large ISP network.
Description
Technical field
The present invention relates to technical field of network security, more specific point, be related to a kind of education network CDN node detecting system and
Its method, for lifting Consumer's Experience for education network users and saving system cost.This two targets itself all comprise a lot
Aspect, but extract its most crucial requirement, the corresponding bandwidth reducing the delay that user accesses CDN node, reducing CDN node respectively
Cost.
Background technology
Take distributed network buffer structure (i.e. popular in the world web cache technology), by existing
Increase by one layer of new network architecture in Internet, the content of website is published to closest in the cache server of user, lead to
Cross the technology of DNS load balancing, judge that user sources access cache server nearby and obtain required content, solve
Internet network congestion condition, improve user access website response speed, as provide multiple be distributed in various places plus
Fast device, with reach quick, can redundancy the purpose accelerating for multiple websites.CDN (Content Delivery Network, interior
Content distributing network) by the content of a server, copy to multiple server top edge nodes, allow user from nearest from oneself
Server obtains content, to improve speed.
The feature of CDN is as follows：1st, local Cache accelerates to improve enterprise site and (especially contains a large amount of pictures and static page
Face website) access speed, and greatly improve the stability of above property website；2nd, mirroring service eliminate different operators it
Between interconnection the impact that causes of bottleneck it is achieved that the website of cross operator accelerates it is ensured that the user in heterogeneous networks can obtain
Good access quality；3rd, long-range acceleration remote access user intelligently automatically selects Cache service according to DNS load-balancing technique
Device, selects Cache servers the fastest, accelerates remote access speed；4th, bandwidth optimization automatically generates the long-range of server
Mirror (mirror image) cache server, reads data during remote user access from cache server, reduces remote access
Bandwidth, share network traffics, mitigate the functions such as former website WEB server load；5th, the widely distributed CDN node of cluster attack resistance
Plus the intelligence between node superfluous in mechanism, can effectively prevent hacker attacks and reduce various ddos attacks to website
Impact, ensures preferable service quality simultaneously.
Content of the invention
In view of this, the present invention proposes education network CDN node detecting system Formation education net CDN node storehouse, and to CDN
Node repository carries out performance detection and scheduling of resource.
According to an aspect of the present invention, there is provided CDN node detection and resource scheduling system in a kind of education network, it includes：
URL acquisition subsystem, it is used for gathering domain name addresses that client in education network accesses, and by the domain name collecting
Address stores in domain name storehouse；
Preprocessing server, it is used for reading domain name addresses from domain name storehouse, and is inserted in domain name queue；
CDN node detecting system, it is used for reading domain name addresses from domain name queue, and carries out CDN acceleration node
Detection, detect domain name address employ CDN accelerate node accelerate when, then domain name address and and corresponding
CDN accelerates the IP address of node to store in education network CDN node storehouse；
Data processing server, it is used for the request according to client, is the CDN acceleration rank that client scheduling obtains optimum
Section, completes the scheduling of resource in CDN node storehouse.
Wherein, when carrying out CDN acceleration nodal test, elder generation is from the domain name addresses obtaining for described CDN node detecting system
Parsing obtains subdomain name, then judges whether described subdomain name employs CND and accelerate node.
Wherein, in described education network, CDN node detection is also included with resource scheduling system：
SLA monitoring node, it is used for testing the performance in CDN node storehouse.
Wherein, described SLA monitoring node initiates a SLA every the first predetermined amount of time to client and CDN node storehouse
The http protocol of test object obtains request.
Wherein, described SLA monitoring node is less than the evaluation net of client in the average service network speed monitoring CDN node storehouse
When fast, then it is judged to primary network performance accident；If described SLA monitoring node is tested to SLA in the second predetermined amount of time
After continuous predetermined number of failed is asked in the acquisition of object, then it is judged to primary network availability accident.
Wherein, described data processing server, when carrying out the scheduling of resource in CDN node storehouse, receives the CND of client
During node acceleration request, obtain CDN from described CDN node storehouse and accelerate the IP address information of node and return；Described CDN acclerating section
The access delay that configures on domain name configuration management system for business of IP address of point IP address information the shortest.
Wherein, described data processing server, after receiving client hosts information request, is believed according to described hosts
Breath request obtains corresponding hosts information from data storage server and returns.
The invention allows for CDN node detects and resource regulating method in a kind of education network, including：
Its network attribute is sent to data processing server by step 1, client, is sent to domain through data processing server
Name storehouse；
Step 2, preprocessing server read domain name addresses in real time from domain name storehouse, and are entered row cache；
Step 3, CDN node detecting system obtain domain name addresses from preprocessing server, then test each domain name one by one
Address, if the domain name being detected employs CDN and accelerates node, accelerates the IP address of node to be stored in religion domain name and CDN
Educate in net CDN node storehouse；
Step 4, performance test and scheduling of resource are carried out to education network CDN node storehouse.
Wherein, in step 4, the performance test in education network CDN node storehouse is included：
Step 401, SLA monitoring node every the first predetermined amount of time, respectively to education network CDN node storehouse and client,
Initiate the acquisition request of the http protocol of a SLA test object；
If the average service network speed in step 402 education network CDN node storehouse is less than the average network speed of client source station, sentence
It is set to primary network performance accident；
Step 403, in the second predetermined amount of time, if the continuous pre-determined number of SLA monitoring node obtains SLA test object
HTTP request failure, then be judged to primary network availability accident.
Wherein, in step 4, the scheduling of resource in education network CDN node storehouse is included：
Step 1, the network attribute of user terminal, are sent to data processing server；
Step 2, described data processing server according to received network attribute, for each net of each network node
The IP of the access delay optimum that domain name of standing is configured on domain name configuration management system by DNS request hosts acquisition of information business；
Step 3, described data processing server judge this user region according to the IP address of user LDNS, so
Afterwards the Pool for this regional service is found out according to the setting of Topology.
The technical scheme is that education network users improve Consumer's Experience and saved system cost.This two targets
Itself all comprise a lot of aspects, but extract its most crucial requirement, respectively the corresponding delay reducing user's access CDN node,
Reduce the bandwidth cost of CDN node.
Brief description
Fig. 1 is based on CDN node detection and resource measurement dispatching method system architecture diagram in large-scale ISP net in the present invention；
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.According to embodiments of the invention journey, can clearly show the education network under this invention
CDN node detection with formed test and flow scheduling.
Fig. 1 shows the frame diagram of CDN node detection and resource scheduling system in education network proposed by the present invention.As Fig. 1
Shown, described system includes：
URL acquisition subsystem, its be used for gather education network client access domain name addresses, and by the domain name collecting ground
Location stores in domain name storehouse；
Preprocessing server, it is used for reading domain name addresses from domain name storehouse, and is inserted in domain name queue；
Preprocessing server is domain name storehouse and the transition stage of education network CDN node detecting system, and its effect is mainly
Read domain name from domain name library file, and be inserted in queue, be equivalent to caching server.
CDN node detecting system, it is used for reading domain name addresses one by one from domain name queue, and obtains domain
Subdomain name in name address, to carry out CDN node detection, in detection process, detects subdomain first from this domain name addresses
By CDN node detecting system, name, judges whether this subdomain name employs CDN node and accelerate after obtaining subdomain name, if this subdomain
Name employ CDN node accelerate, then domain name address and and corresponding accelerate node IP address store education network
In CDN node storehouse.Education network CDN node storehouse is used for storing the IP address that domain name addresses and parsing obtain, for the property in CDN node storehouse
Can test and scheduling of resource.
SLA (SLA) monitoring node, it is used for testing the performance in CDN node storehouse；
Alternatively, SLA monitoring node includes to the performance test in CDN node storehouse：
(1) SLA (SLA) balancing method
At interval of 6 minutes, a SLA test object was initiated to education network CDN node storehouse and client respectively in SLA monitoring point
Http protocol Get request.
(2) SLA test object
The test object of SLA be TTL be 2 hours, size be 200K byte about file.
(3) performance measurement
If averaging network speed is less than client averaging network per hour per hour for the service in the CDN node storehouse of education network
Speed, then be considered as primary network performance accident, need to optimize resource scheduling algorithm.
(4) availability measurement
In any one natural 60 minutes, if the 10% of the whole network SLA monitoring node arrives test object continuous three times
HTTP request failure, then be considered as primary network availability accident.Resource scheduling algorithm need to be optimized.
Data processing server, it is used for completing the scheduling of resource in CDN node storehouse, and detailed process includes：
Data processing server receives the CND node acceleration request of website domain name from client, and described acceleration request includes
The network attribute of client and described website domain name；Data processing server is according to the request receiving from data storage server
Obtain CDN to accelerate the IP address information of node and return.Described IP address configures on domain name configuration management system for business
The optimum IP address of access delay.Data processing server also receives hosts information request, described hosts information from client
Request includes the network data of client, and data processing server is according to described hosts information request from data storage service
Device obtains the hosts information in corresponding CDN node storehouse and returns；
Described data processing server selects the corresponding IP address accelerating node according to preference policies, and will
It stores to data storage server；
Wherein, described preference policies include：According to the network attribute of request, select to detect optimum by service quality
CDN node IP address return to request.
The invention also discloses CDN node detects and resource regulating method in a kind of education network, methods described includes：
Its network attribute (i.e. client accesses the domain name addresses of webpage) is sent to data processing clothes by step 1, client
Business device, is sent to domain name storehouse through data processing server；
Step 2, preprocessing server read domain name addresses in real time from domain name storehouse, and are entered row cache；
Step 3, CDN node detecting system obtain domain name addresses from preprocessing server, then test each domain name one by one
Address, if the domain name being detected employs CDN node and accelerates, is stored in education network the IP address of domain name and CDN node
In CDN node storehouse.
The access process employing CDN acceleration is as follows：
1), user provides domain name to be accessed to browser；
2), browser calls domain name mapping storehouse that domain name is parsed, because CDN is adjusted to domain name resolution process
Whole, thus analytical function storehouse typically result in be this domain name corresponding CNAME record, in order to obtain real ip address, browser
Need again the CNAME domain name obtaining to be parsed to obtain the IP address of reality；In the process, the overall situation load of use
Equilibrium dns resolution, such as parses corresponding IP address so that user can access nearby according to geographical location information.
3), this time parsing obtains the IP address that CDN accelerates node, browser after the IP address obtaining reality, to CDN
Node is accelerated to send access request；
4), CDN accelerates the domain name to be accessed that node provides according to browser, is obtained by Cache internal proprietary dns resolution
To the real ip address of this domain name, then node is accelerated to submit access request to this real ip address from CDN；
5), CDN accelerates node after real ip address must obtain content, on the one hand locally being preserved, in case with
After use, on the other hand obtain data return to client, complete data service procedure；
6), client shows after obtaining the data accelerating node to return by CDN and completes the data entirely browsing
Request process.
Mainly as follows to the determination methods of CDN acceleration node or cache resources node in the present invention：Using nslookup domain
Name；
For example：Employ the subprogram that CDN accelerates node
nslookup www.baidu.com
Non-authoritative answer：
Name：www.a.shifen.com
Addresses：119.75.218.70,119.75.217.109
Aliases：www.baidu.com
Do not accelerate the subprogram example of node using CDN
Non-authoritative answer：
Name：www.njupt.edu.cn
Address：218.2.103.166
Transfer order nslookup after obtaining domain name domain name is inquired about, carry out brush choosing from the result of inquiry and judge to be somebody's turn to do
Whether domain name employs CDN node accelerates.Judge the quantity of the ip address in Address using the program write, if Name pair
The Address answering occurs then being considered as when multiple ip address employing CDN acceleration node, if the corresponding Address of Name goes out
Then it is considered as not using CND node when an existing ip address.
Step 4, performance test and scheduling of resource are carried out to education network CDN node storehouse.
Wherein, the performance test in CDN node storehouse includes：
In step 401, at interval of 6 minutes, SLA monitoring point, respectively to education network CDN node storehouse and client, is initiated once
The Get request of the http protocol of SLA test object, the SLA test object of request is：TTL is 2 hours, size is 200K byte
The file of left and right；
In step 402, if averaging network speed is every less than client source station per hour for the service in the CDN node storehouse of education network
Hourly average network speed, then be considered as primary network performance accident, need to optimize resource scheduling algorithm；
In step 403, in any one natural 60 minutes, if the 10% of the whole network SLA monitoring node continuous three
The secondary HTTP request failure to test object, then be considered as primary network availability accident, need to optimize resource scheduling algorithm.
The scheduling of resource in CDN node storehouse includes：
In step 41, client request accesses education network CDN node storehouse, and acquisition business is joined on domain name configuration management system
The IP address of the CDN node of access delay optimum put；
Client, to getting after the IP address of CDN node, sends service protocol request to this IP address.With Http request
As a example, by specifying host field in header, the Http request sending standard to the IP that education network CDN node storehouse returns is
Can.
Particular embodiments described above, has carried out detailed further to the purpose of the present invention, technical scheme and beneficial effect
Describing in detail bright it should be understood that the foregoing is only the specific embodiment of the present invention, being not limited to the present invention, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement done etc., should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. CDN node detection and resource scheduling system in a kind of education network, it includes：
URL acquisition subsystem, it is used for gathering domain name addresses that client in education network accesses, and by the domain name addresses collecting
Store in domain name storehouse；
Preprocessing server, it is used for reading domain name addresses from domain name storehouse, and is inserted in domain name queue；
CDN node detecting system, it is used for reading domain name addresses from domain name queue, and carries out CDN acceleration nodal test,
Detect domain name address employ CDN accelerate node accelerate when, then domain name address and and corresponding CDN add
The IP address of fast node stores in education network CDN node storehouse；
Data processing server, it is used for the request according to client, is the CDN boost phase that client scheduling obtains optimum,
Complete the scheduling of resource in CDN node storehouse.
2. the system as claimed in claim 1 is it is characterised in that described CDN node detecting system is carrying out CDN acceleration node inspection
During survey, first from the domain name addresses obtaining, parsing obtains subdomain name, then judges whether described subdomain name employs CND acclerating section
Point.
3. the system as claimed in claim 1 is it is characterised in that also include：
SLA monitoring node, it is used for testing the performance in CDN node storehouse.
4. system as claimed in claim 3 it is characterised in that described SLA monitoring node every the first predetermined amount of time to visitor
The http protocol of family end and SLA test object of CDN node storehouse initiation obtains request.
5. system as claimed in claim 3 is it is characterised in that described SLA monitoring node is monitoring the average of CDN node storehouse
When service network speed is less than the evaluation network speed of client, then it is judged to primary network performance accident；If described SLA monitoring node exists
In second predetermined amount of time, the acquisition of SLA test object is asked after continuous predetermined number of failed, to be then judged to that primary network can
With sexual behavior event.
6. the system as claimed in claim 1 is it is characterised in that described data processing server is in the money carrying out CDN node storehouse
Source scheduling when, receive client CND node acceleration request when, from described CDN node storehouse obtain CDN accelerate node IP ground
Location information simultaneously returns；Described CDN accelerates the access delay that the IP address of node configures on domain name configuration management system for business
IP address information the shortest.
7. the system as claimed in claim 1 is it is characterised in that described data processing server is receiving client hosts
After information request, corresponding hosts information is obtained from data storage server according to described hosts information request and returns.
8. in a kind of education network, CDN node detects with resource regulating method it is characterised in that including：
Its network attribute is sent to data processing server by step 1, client, is sent to domain name through data processing server
Storehouse；
Step 2, preprocessing server read domain name addresses in real time from domain name storehouse, and are entered row cache；
Step 3, CDN node detecting system obtain domain name addresses from preprocessing server, then test each domain name addresses one by one,
If the domain name being detected employs CDN accelerates node, the IP address of node is accelerated to be stored in education network domain name and CDN
In CDN node storehouse；
Step 4, performance test and scheduling of resource are carried out to education network CDN node storehouse.
9. method as claimed in claim 8 is it is characterised in that the performance test bag to education network CDN node storehouse in step 4
Include：
Step 401, SLA monitoring node, every the first predetermined amount of time, respectively to education network CDN node storehouse and client, are initiated
The acquisition request of the http protocol of SLA test object；
If the average service network speed in step 402 education network CDN node storehouse is less than the average network speed of client source station, it is judged to
Primary network performance accident；
Step 403, in the second predetermined amount of time, if the continuous pre-determined number of SLA monitoring node obtains SLA test object
HTTP request failure, then be judged to primary network availability accident.
10. method as claimed in claim 8 is it is characterised in that the scheduling of resource bag to education network CDN node storehouse in step 4
Include：
Step 1, the network attribute of user terminal, are sent to data processing server；
Step 2, described data processing server according to received network attribute, for each website domain of each network node
The IP of the access delay optimum that name is configured on domain name configuration management system by DNS request hosts acquisition of information business；
Step 3, described data processing server judge this user region, Ran Hougen according to the IP address of user LDNS
Find out the Pool for this regional service according to the setting of Topology.
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| CN112769643B (en) * | 2020-12-28 | 2023-12-29 | 北京达佳互联信息技术有限公司 | Resource scheduling method and device, electronic equipment and storage medium |
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