CN108737470A - A kind of access request time source method and apparatus - Google Patents
A kind of access request time source method and apparatus Download PDFInfo
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- CN108737470A CN108737470A CN201710259785.8A CN201710259785A CN108737470A CN 108737470 A CN108737470 A CN 108737470A CN 201710259785 A CN201710259785 A CN 201710259785A CN 108737470 A CN108737470 A CN 108737470A
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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
- H04L67/63—Routing a service request depending on the request content or context
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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
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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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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- Information Transfer Between Computers (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The present invention provides a kind of access requests to return source method and apparatus.It is related to internet arena；Solve the problems, such as that the father node scheme time source amount of the prior art is big, resource utilization is low.This method includes：Fringe node receives the access request of user, after carrying out consistency Hash operation to the URL carried in the access request, determines that the URL is accessed to corresponding father node server group；The corresponding source files of the URL are asked to the father node server group.Technical solution provided by the invention realizes file Hui Yuan flexible, balanced, that storage and disaster tolerance ability is high suitable for CDN.
Description
Technical field
The present invention relates to internet arenas more particularly to a kind of access request to return source method and apparatus.
Background technology
It is the node server that cloud distribution service provider disposes throughout the country to accelerate node, and cloud distributes service provider
To solve the problems, such as the last one kilometer of client's access, fringe node is disposed throughout the country, is provided nearby for client
It accesses and accelerates service.And when national node visit is with file on source, fringe node, can Hui Yuanla initially without this file
It takes, causes Hui Yuanliang big；In order to solve the above problem, the upper layer transfer server under cloud distributed architecture comes into being (here referred to as
Father node).When the file that user accesses is in father node, other fringe nodes then can be to obtaining file in this father node, and nothing
It needs Hui Yuan to pull, source purpose is reduced back to reach.
Since the resource that fringe node accesses is stored in father node, when father node is abnormal, fringe node needs
Hui Yuan is carried out, results in the increase of response time, the problem of poor user experience；In addition, when the number of request of father node is increased sharply,
How to mitigate the load pressure of server becomes critical issue.
In traditional cloud distribution mode, there are mainly two types of patterns for the scheme of father node distribution request and caching：Active-standby mode
And poll pattern.
That is, there is Zhufu node server group and standby father node server group, wherein father node contains more in active-standby mode
A server group in a father node；But it accesses resource to be stored in the node server group of Zhufu, standby father node server
Undertaking when group is mainly as Zhufu node server group link failure does not provide service under normal circumstances, therefore standby father node takes
Device group of being engaged in usually accesses resource without storage.The drawbacks of such pattern, is mainly under the node group fault condition of Zhufu that caching is literary
Part is unavailable, and Hui Yuanliang is caused to uprush, and the access response time is elongated, and service quality is deteriorated.
Different requests is distributed to different father node server groups, while will return source contents caching by poll pattern
To different father node server groups.This method for being polled multiple father node server groups optimally,
It can have backup at some father node server group failure in other father node server groups and preserve, it can be certain
The insecure defect of file backup is made up in degree.And the deficiency of such pattern, the resource mainly asked can be due to polls
Reason leads to the father node multiple Hui Yuan of server group, and repeatedly backup can be stored in father node server group, is not only increasing
Hui Yuanliang, and waste memory space.
There is also the father node schemes that a kind of active and standby and poll is used in mixed way in the prior art, but such scheme still exists
The defect of both the above scheme.
To sum up, the father node scheme of the prior art has back that source amount is big, resource utilization is low.
Invention content
Present invention seek to address that problem as described above.
According to the first aspect of the invention, a kind of access request time source method is provided, including：
Fringe node receives the access request of user, and consistency Hash fortune is carried out to the URL carried in the access request
After calculation, determine that the URL is accessed to corresponding father node server group；
The corresponding source files of the URL are asked to the father node server group.
Preferably, this method further includes：
Using each father node server group as a Hash Key, a Hash Round Robin data partition section is distributed for it.
Preferably, fringe node receives the access request of user, and Hash fortune is carried out to the URL carried in the access request
It calculates and determines that the corresponding father node server groups of the URL include：
Hash Key is generated based on preset configuration parameter；
Hash is calculated using the URL as Hash object Object, according to consistency Hash rule in the fringe node
Value, judges the Hash Round Robin data partition space that the cryptographic Hash is fallen into, and determines that corresponding father node takes according to the Key in the Hash Round Robin data partition space
Business device group.
Preferably, generating Hash Key based on preset configuration parameter is specially：
The fringe node is using the father node Server Group Name in preset configuration parameter as Hash Key.
Preferably, this method further includes：
The weighted value for configuring each Hash Key distributes access request according to the weighted value.
Preferably, the fringe node is specially by Hash object Object of the URL：
The user related information in the URL is removed, the mapping for obtaining the URL accesses URL；
URL is accessed as Hash Object using the mapping.
Preferably, the URL is carried on the request header of the access request.
Preferably, this method further includes：
URL is accessed for hot spot, the request header is set to Hash Object, wherein the parameter value of the request header is
Random number.
Preferably, the father node server group includes at least two single line or the multi-thread services being distributed in different computer rooms
Device group.
According to another aspect of the present invention, a kind of access request time source device is provided, including：
Father node server group selection module, the access request for receiving user, to what is carried in the access request
After URL carries out consistency Hash operation, determine that the URL is accessed to corresponding father node server group；
Source request module is returned, for asking the corresponding source files of the URL to the father node server group.
Preferably, which further includes：
Configuration module, for using each father node server group as a Hash Key, a Hash Round Robin data partition to be distributed for it
Section.
Preferably, the father node server group selection module includes：
Key generation units, for generating Hash Key based on preset configuration parameter；
Hash operation unit, for using the URL as Hash object Object, being calculated according to consistency Hash rule
Cryptographic Hash judges the Hash Round Robin data partition space that the cryptographic Hash is fallen into, and determines that corresponding father saves according to the Key in the Hash Round Robin data partition space
Point server group.
The present invention provides a kind of access requests to return source method and apparatus, and fringe node receives the access request of user, right
The URL carried in the access request carries out Hash operation and determines the corresponding father node server groups of the URL, to the father node
Server group asks the corresponding source files of the URL.It solves existing father node time source scheme and measures big, resource utilization in the source of returning
Low problem realizes time source scheme flexible, balanced, that storage and disaster tolerance ability is high.
Being described below for exemplary embodiment is read with reference to the drawings, other property features of the invention and advantage will
It is apparent from.
Description of the drawings
It is incorporated into specification and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and with
Principle for explaining the present invention together is described.In the drawings, similar reference numeral is for indicating similar element.Under
Attached drawing in the description of face is some embodiments of the present invention, rather than whole embodiments.Those of ordinary skill in the art are come
It says, it without creative efforts, can be obtain other attached drawings according to these attached drawings.
Fig. 1 schematically illustrates a kind of flow of access request time source method of the offer of the embodiment of the present invention one；
Fig. 2 schematically illustrates a kind of structure of access request time source device of the offer of the embodiment of the present invention two；
Fig. 3 schematically illustrates the structure of father node server group selection module 201 in Fig. 2.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.It needs
Illustrate, in the absence of conflict, the features in the embodiments and the embodiments of the present application mutually can be combined arbitrarily.
The embodiment of the drawbacks of to solve the above traditional mode, this method provide a kind of access request time source method and dress
It sets, with consistency hash algorithm, by all father nodes as a resource pool, operation is carried out by Hash and is visited come reasonable distribution
Ask request and cache contents.
First in conjunction with attached drawing, the embodiment of the present invention one is illustrated.
An embodiment of the present invention provides a kind of access requests to return source method, completes to access to father node processing using this method
The flow of source file is asked back as shown in Figure 1, including：
Step 101 carries out back source rule configuration in fringe node, using each father node server group as a Hash
Key distributes a Hash Round Robin data partition section for it；
In the embodiment of the present invention, the configuration parameter of described time source rule includes at least the access domain of father node server group
Name.
In this step, source rule configuration is carried out back in fringe node, described time source rule defines fringe node and receiving
The rule of father node server group is selected in user access request.Specifically, it includes configuration parameter, configuration ginseng to return source rule
Number includes at least the access domain name of whole father node server groups in CDN.
The configuration parameter further includes：The weight size of each Key.
In order to make number of request that can be disperseed according to the different bearing capacity of each father node server group in resource pool,
Each father node server group number of request weight can be adjusted flexibly by the weight size of each Key of setting, to reduce clothes
The load of business device.
In the embodiment of the present invention, the father node server group contains at least two single lines being distributed in different computer rooms
Or multi-thread server group.
Step 102, fringe node receive the access request of user, are carried out to the URL carried in the access request consistent
After property Hash operation, determine that the URL is accessed to corresponding father node server group；
In this step, fringe node receives the access URL of user's (can be the end user for accessing accelerated URL), and
Set the access URL to Hash Object.
Fringe node is based on configuration parameter and generates Hash Key, according to hash function, calculates the Hash Object and corresponds to
Hash Round Robin data partition section, so that it is determined that source father node is returned in corresponding Hash Round Robin data partition section accordingly.
Preferably, the configuration parameter further includes：The unique mark of father node group, such as father node Server Group Name.
When generating Hash Key, the father node Server Group Name that fringe node is specifically based in configuration parameter generates Kazakhstan
Uncommon Key.
In the case of father node is there are multi-line operation quotient, using father node Server Group Name as Hash Key, make edge section
The corresponding Hash Round Robin data partition section of similarly request of point different operators is identical, it is ensured that the fringe node of each operator accesses same
One URL is hashing onto in same node group.
Preferably, the configuration parameter further includes：Add request header.
URL is accessed for hot spot, the request header of access request can be set to Hash Object, wherein the request header
Parameter value can be random number.In the case of there is part resource overheat, to prevent certain father node in resource pool from bearing
Load problem can generate random number and carry out Hash calculation, to make request disperse by specified fixed request header.As worked as some
In the case that URL request number is very huge, the problem of father node server group being hashing onto in order to prevent collapses under pressure, support can be directed to
Certain access requests add specific request header (such as UrlHot:Xxx), fringe node generates random number as Hash by request header
Object (such as configuration cache_peer hash_Key_header=UrlHot), is taken with reaching dispersion Hash to different father nodes
The purpose for device group of being engaged in.
Preferably, it can also carry out caching regular configuration in fringe node, to the URL processing in access request.Example
Such as, the mapping access URL for removing the relevant information of the user is generated according to the URL that this access request is directed toward, and is reflected described
It penetrates access URL and is set as Hash Key.
It is http as original accesses URL://test.com/a.txt？123, take http after going question mark to cache://test.com/
A.txt is that mapping accesses URL, to increase cache hit rate.
Step 103 asks the corresponding source files of the URL to the father node server group；
In this step, fringe node returns source demand file content, source station response file by the father node server group
After content, client is responded to by backtracking, and this document content is cached in the father node server group.
Below in conjunction with the accompanying drawings, the embodiment of the present invention two is illustrated.
An embodiment of the present invention provides a kind of access requests to return source device, and the structure of the device is as shown in Fig. 2, include：
Father node server group selection module 201, the access request for receiving user, to being carried in the access request
URL carry out consistency Hash operation after, determine that the URL is accessed to corresponding father node server group；
Source request module 202 is returned, for asking the corresponding source files of the URL to the father node server group.
Preferably, which further includes：
Configuration module 203, for using each father node server group as a Hash Key, a Hash to be distributed for it
Address section.
Preferably, the structure of the father node server group selection module 201 is as shown in figure 3, include：
Key generation units 2011, for generating Hash Key based on preset configuration parameter；
Hash operation unit 2012, for using the URL as Hash object Object, being calculated according to consistency Hash rule
Cryptographic Hash is obtained, judges the Hash Round Robin data partition space that the cryptographic Hash is fallen into, so that it is determined that corresponding father node server group.
Access request as shown in Figures 2 and 3 returns source device, can be integrated in the fringe node and/or any layer outer layer of CDN
On node, corresponding function is realized by the node.Node concretely father node server group, difference is distributed in by least two
Single line or multi-thread server group in computer room are constituted.
The embodiment provides a kind of access requests to return source device, can be provided with the embodiment of the present invention one
Kind access request is returned source method and is combined, and fringe node receives the access request of user, to the URL carried in the access request
It carries out Hash operation and determines the corresponding father node server groups of the URL, ask the URL to correspond to the father node server group
Source file.The retractility of father node resource pool is strong, can be adjusted according to demand to the father node server group in resource pool
It is whole, and the influence to access request is preferably minimized；Number of request is disperseed, can be according to each father node server group in resource pool not
Same bearing capacity, is adjusted flexibly each father node server group number of request weight, reduces the load of server；Storage
Dispersion will access in each father node server group that resource dispersion is stored into resource pool, substantially increase the disaster tolerance energy of storage
File can be lost when some father node server group failure, return source amount control to minimum by power；It will be different on fringe node
The same request operation of operator is that, to fall into same father node server group, can reduce access request with a request
Quantity, mitigate server load；In the case where occurring accessing hot spot relatively concentration, hash strategies can be changed, by access request
Break up processing so that request is dispersed to each father node server group, enhances the crushing resistance of server.Solves existing father node
Source scheme is returned in the problem that the source of returning amount is big, resource utilization is low, realizes Hui Yuanfang flexible, balanced, that storage and disaster tolerance ability is high
Case.
Descriptions above can combine implementation individually or in various ways, and these variants all exist
Within protection scope of the present invention.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (12)
1. a kind of access request returns source method, which is characterized in that including：
Fringe node receives the access request of user, after carrying out consistency Hash operation to the URL carried in the access request,
Determine that the URL is accessed to corresponding father node server group；
The corresponding source files of the URL are asked to the father node server group.
2. access request according to claim 1 returns source method, which is characterized in that this method further includes：
Using each father node server group as a Hash Key, a Hash Round Robin data partition section is distributed for it.
3. access request according to claim 2 returns source method, which is characterized in that the access that fringe node receives user is asked
It asks, carrying out Hash operation to the URL carried in the access request determines that the corresponding father node server groups of the URL include：
Hash Key is generated based on preset configuration parameter；
Cryptographic Hash is calculated using the URL as Hash object Object, according to consistency Hash rule in the fringe node, sentences
The Hash Round Robin data partition space that the cryptographic Hash of breaking is fallen into, so that it is determined that corresponding father node server group.
4. access request according to claim 3 returns source method, which is characterized in that generated and breathed out based on preset configuration parameter
Uncommon Key is specially：
The fringe node is using the father node Server Group Name in preset configuration parameter as Hash Key.
5. access request according to claim 4 returns source method, which is characterized in that this method further includes：
The weighted value for configuring each Hash Key distributes access request according to the weighted value.
6. access request according to claim 3 returns source method, which is characterized in that the fringe node is with the URL
Hash object Object is specially：
The user related information in the URL is removed, the mapping for obtaining the URL accesses URL；
URL is accessed as Hash Object using the mapping.
7. access request according to claim 3 returns source method, which is characterized in that the URL is carried on the access and asks
The request header asked.
8. access request according to claim 7 returns source method, which is characterized in that this method further includes：
URL is accessed for hot spot, the request header is set to Hash Object, wherein the parameter value of the request header is random
Number.
9. access request according to any one of claims 1 to 8 returns source method, which is characterized in that the father node server
Group is distributed in single line or multi-thread server group in different computer rooms comprising at least two.
10. a kind of access request returns source device, which is characterized in that including：
Father node server group selection module, the access request for receiving user, to the URL that is carried in the access request into
After row consistency Hash operation, determine that the URL is accessed to corresponding father node server group；
Source request module is returned, for asking the corresponding source files of the URL to the father node server group.
11. access request according to claim 10 returns source device, which is characterized in that the device further includes：
Configuration module, for using each father node server group as a Hash Key, a Hash Round Robin data partition area to be distributed for it
Between.
12. access request according to claim 11 returns source device, which is characterized in that the father node server group selection
Module includes：
Key generation units, for generating Hash Key based on preset configuration parameter；
Hash operation unit, for using the URL as Hash object Object, Hash to be calculated according to consistency Hash rule
Value, judges the Hash Round Robin data partition space that the cryptographic Hash is fallen into, so that it is determined that corresponding father node server group.
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| CN201710259785.8A CN108737470B (en) | 2017-04-19 | 2017-04-19 | Access request source returning method and device |
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| Publication number | Publication date |
|---|---|
| CN111464649A (en) | 2020-07-28 |
| CN108737470B (en) | 2020-03-13 |
| CN111464649B (en) | 2022-10-21 |
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