CN110071986A - A kind of system for domain name mapping - Google Patents
A kind of system for domain name mapping Download PDFInfo
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- CN110071986A CN110071986A CN201910216592.3A CN201910216592A CN110071986A CN 110071986 A CN110071986 A CN 110071986A CN 201910216592 A CN201910216592 A CN 201910216592A CN 110071986 A CN110071986 A CN 110071986A
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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]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
- G06F16/9574—Browsing optimisation, e.g. caching or content distillation of access to content, e.g. by caching
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Abstract
The application provides a kind of method, apparatus and system for domain name mapping.The method comprising the steps of: receiving the domain name mapping request from client；According to domain name mapping request nslookup parsing result in name server cache cluster；And it translates domain names into result and returns to client.According to the application, by using domain name mapping result can be stored by the cache cluster that each name server in domain name server cluster is shared, to overcome the problem that name server single machine cache size is restricted and single machine cache contents cannot be shared, improve cache hit rate when domain name server cluster executes domain name mapping, reduce recursive query number, and then improves the speed of domain name mapping.
Description
It is on 08 14th, 2013 that the application, which is application No. is the 201310353887.8, applying date, entitled " a kind of
Method, apparatus and system for domain name mapping " patent application divisional application.
Technical field
This application involves field of Internet communication more particularly to a kind of method, apparatus and system for domain name mapping.
Background technique
Domain name is the title of a certain computer or calculating unit on internet, it is by a string of alphabetical groups separated with point
At, organization name is generally comprised, moreover, it includes the suffix of two to three letters, to indicate type or the domain institute of tissue
Country.
Domain name system (Domain Name System, DNS) is one of infrastructure service crucial in internet, it is numerous
Network application provides essence support.DNS mutually maps domain name with IP address, enables people to easily access internet,
Without remembering complicated IP address.For example, domain name is www.baidu.com, IP address 115.239.210.26, DNS are mentioned
For the mapping between the two.The domain name mapping clothes that client is provided by name server (Domain Name Server)
Business, can find the entrance of required website or resource, and then access to website or resource.
Domain name resolution service, which refers to the process of, is converted to IP address for domain name.In general, the detailed process of domain name mapping are as follows: when
Client issues domain name mapping request to name server, when needing a domain name being mapped as IP address, by domain to be converted
Name is placed in domain name mapping request, is issued with UDP (User Datagram Protocol, User Datagram Protocol) message mode
Local name server.It, will be right after local name server finds IP address corresponding with the domain name in local cache
The IP address answered, which is placed in response message, returns to client.At the same time, there is also local name servers takes to long-range
Business device carries out the possibility of recursive query, that is, if IP address corresponding with the domain name is not present in the caching of name server, thus
The request cannot be replied, then just the root name server into remote server, that is, domain name system forwards domain name to the name server
Analysis request, root name server can find the name server of following all second level domains.In this way, and so on,
Parsing downwards always, until inquiring requested domain name.In addition, once local name server passes through above-mentioned recursive query
A domain name mapping is obtained as a result, the caching that the domain name mapping result is then stored in the local domain name server is (usually high
Fast buffer storage (cache)) in, so as to can be direct when receiving the same domain name analysis request from client later
Response is carried out using the data in its caching, without carrying out recursive query again.
It in the above prior art, is to translate domain names into result storage into the caching of name server the machine.Due to list
Only name server can not break through the size limitation of its single machine caching, therefore usually require by substantial increase name server
Quantity be to construct domain name server cluster to ensure the availability of domain name resolution service.However, due to domain name server cluster
In each name server between can not share caching in respective single machine, so causing when domain name mapping request can not be in single machine
When being hit in caching, it is necessary to carry out recursive query, this extends the time of domain name mapping.
Therefore, it is necessary to a kind of improvement project, it can solve name server single machine in domain name server cluster mechanism and cache
Limited size system and the longer problem of domain name mapping delay.
Summary of the invention
The main purpose of the application is to provide a kind of technology for domain name mapping, to solve domain name server cluster machine
Single machine cache size is restricted and the longer technical problem of domain name mapping delay in system.
According to a first aspect of the present application, a kind of method for domain name mapping is provided, which is characterized in that including step
It is rapid: to receive the domain name mapping request from client；According to domain name mapping request inquiry field in name server cache cluster
Name parsing result；And it translates domain names into result and returns to client.
According to a second aspect of the present application, a kind of device for domain name mapping is provided characterized by comprising connect
Module is received, for receiving the domain name mapping request from client；Enquiry module, for being taken according to domain name mapping request in domain name
Nslookup parsing result in business device cache cluster；And return module, client is returned to for translating domain names into result.
According to the third aspect of the application, a kind of system for domain name mapping is provided characterized by comprising domain
Name server cluster, is used for: receiving the domain name mapping request from client；It is slow in name server according to domain name mapping request
Deposit nslookup parsing result in cluster；It translates domain names into result and returns to client；And name server cache cluster, it uses
In: storage domain name server cluster is by carrying out recursive query domain name mapping result obtained to remote server.
Technology provided by the present application for domain name mapping, by using can be taken by each domain name in domain name server cluster
The shared cache cluster of business device come store domain name mapping as a result, to overcome name server single machine cache size be restricted with
And the problem that single machine cache contents cannot be shared, cache hit rate when domain name server cluster executes domain name mapping is improved,
Reduce recursive query number, and then improves the speed of domain name mapping.In addition, by preset in local name server
The destination file of part top level domain shortens the time-consuming of recursive query, further improves domain name mapping speed.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the flow chart according to the method 100 for domain name mapping of the application one embodiment；
Fig. 2 is the flow chart according to the method 200 for domain name mapping of the more detailed embodiment of the application；
Fig. 3 is the structural block diagram according to the device 300 for domain name mapping of the application one embodiment；And
Fig. 4 is the schematic diagram according to the system 400 for domain name mapping of the application one embodiment.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
With reference to the flow chart that Fig. 1, Fig. 1 are according to the method 100 for domain name mapping of the application one embodiment.Such as figure
Shown in 1, method 100 starts from step 101.
In step 101, the domain name mapping request from client is received.
Domain name server cluster may include one or more name server, wherein every name server can receive
Domain name mapping request from client.The content of domain name mapping request may include the domain name for the resource that user needs to access
(or network address).Client can translate domain names into request with UDP message mode and issue domain name server cluster.
According to one embodiment of the application, domain name server cluster may include dividing according to different network operators
Name server.Specifically, can by domain name mapping request from client IP address, to identify the client
Which user type belonged to.Such as: belonging to the name server of telecommunication user IP address set, belong to connection IP address set
Name server or belong to the name servers of other network operator's IP address set.When name server receives
When domain name mapping from client is requested, the user type of the request transmitting terminal is identified first, if the user belongs to telecommunications
User then handles domain name mapping request by the name server for telecommunication user, if the user belongs to connection user,
By handling domain name mapping request for the name server of connection user.If the user belongs to the commercialization of other network operations
Family then handles domain name mapping request by the name server for the network operator user.If receiving domain name mapping
The name server of request is not intended to handle the name server of the request of the network operator user, then by the domain name mapping
Request is transmitted to the name server of the request for handling the network operator user.
According to another embodiment of the application, domain name server cluster may include according to different regions IP address set
Come the name server divided.The side of concrete operations scheme and the above-mentioned name server divided according to different network operators
Case is similar.
In step 102, according to domain name mapping request nslookup parsing result in name server cache cluster.
It, can after any one name server in domain name server cluster receives the request of the domain name mapping from client
With the nslookup parsing result first in name server cache cluster (hereinafter referred to as cache cluster).
Name server cache cluster is the spatial cache that each name server in domain name server cluster is shared.
According in one embodiment of the application, cache cluster may include one or more such as volatibility or non-volatile
Property memory etc storage equipment, it is therefore preferable to one or more cache memories, wherein storage name server collection
Each name server in group is directed to its history domain name mapping request for providing domain name resolution service and its domain name mapping result
Destination file, that is, be stored with history domain name mapping request involved in domain name and corresponding IP address mapping relations.
It preferably, can be using the local cache of at least part name server in name server as cache cluster
A part, shared spatial cache is provided for domain name server cluster.
Herein, cache cluster externally uniformly provides an interface as a whole, is conciliate by the interface
Analyse in domain name server cluster any name server message, and thus to the respective storage devices in cache cluster into
Row is under unified central planning and manages.It, can be using a storage equipment in cache cluster as cache set according to one embodiment of the application
The main storage device of group, by the unified reception of this main storage device and parsing from any domain name service in domain name server cluster
The message of device, and under unified central planning and management is carried out to the respective storage devices in cache cluster.Wherein, which can be domain name clothes
The message that any name server is sent by custom protocol in business device cluster.
Specifically, in a step 102, when needs are inquired in name server cache cluster according to domain name mapping request
When domain name mapping result, specific message can be sent by main storage device of the custom protocol into cache cluster to carry out
Inquiry.The main storage device interface external as the cache cluster specific message, and the message is parsed, so
It is inquired in cache cluster according to parsing result afterwards.
Next, if domain name mapping result can be inquired in cache cluster, that is, exist and this in cache cluster
The corresponding IP address of domain name in domain name mapping request, then the name server in domain name server cluster can be from caching
The domain name mapping result is got in cluster.
It is not deposited when in cache cluster according to one embodiment of the application when inquiring failure in cache cluster
It, can be by into remote server such as domain name system in IP address corresponding with the domain name in domain name mapping request
Root name server carry out recursive query and obtain corresponding domain name mapping result.Recursive query be usually from top level domain to
The inquiry step by step of target ip address.In the art, be about the specific implementation process of recursive query it is well known, it is no longer superfluous here
It states.
It, can be by domain name solution after obtaining domain name mapping result by recursive query according to one embodiment of the application
Result storage is analysed to cache cluster, for calling directly when subsequently received same domain name analysis request.
Specifically, when needing the domain name mapping result obtained by recursive query being stored in name server cache set
When in group, specific message can be sent by main storage device of the custom protocol into cache cluster to be stored.It is main
Equipment interface specific message external as cache cluster is stored, and the message is parsed, then basis
Parsing result is stored in cache cluster.
In step 103, translates domain names into result and return to client.
It, can be with when any name server in domain name server cluster is after step 102 gets domain name mapping result
It translates domain names into result and returns to client, so that client is according to the domain name mapping result access target website or resource.
As a result, in practical applications, if domain name mapping request and a certain history domain name before that client is sent
The content of analysis request is identical, then can be directly from cache cluster call result file, to get corresponding domain name mapping
As a result, without carrying out recursive query to remote server.As it can be seen that the name server cache cluster according to the application can be
Each name server in domain name server cluster provides shared buffer memory space, and the spatial cache has scalability.
In this way, the problem of can break through single machine memory-limited in the prior art, when improving domain name server cluster execution domain name mapping
Cache hit rate, reduce recursive query number, to greatly shorten the time-consuming of domain name mapping, and then improve the speed of domain name mapping
Degree.
With reference to the flow chart that Fig. 2, Fig. 2 are according to the method 200 for domain name mapping of the more detailed embodiment of the application.
Method 200 starts from step 201.In step 201, receives and come from client by what front end domain name server cluster forwarded
The domain name mapping at end is requested.
In the present embodiment, it is contemplated that since domain name server cluster would generally receive largely within the very short period
Domain name mapping request, for equally loaded and improve the purpose of domain name mapping speed, can be by domain name server cluster from function
Can on be divided into front end domain name server cluster and rear end domain name server cluster, wherein being held by front end domain name server cluster
The distribution and management operation that row requests domain name mapping, and specific domain name mapping behaviour is completed by rear end domain name server cluster
Make, the domain name mapping speed loaded in larger situation can be greatly improved from there through the cooperation of the two.
Specifically, in step 201, any one name server in the domain name server cluster of rear end can be via preceding
The corresponding name server in domain name server cluster is held to receive the domain name mapping request from client.
More specifically, front end domain name server cluster may include one or more name server, can be used for
The domain name mapping request from client is received, and domain name mapping request is transmitted to rear end domain name service according to ad hoc rules
Corresponding name server in device cluster, to complete domain name resolution process by the name server.
According to an embodiment of the present application, ad hoc rules as described herein can be to received domain name mapping request
According to using the client user of different network operator (e.g., telecommunications, connection etc.) to divide.For example, working as front end domain name
After server cluster receives the request of the domain name mapping from client, domain name mapping request is identified first, is determined
Which network operator the request comes from, and then forwards the request to according to definitive result corresponding for the network operation
The rear end name server of quotient.It should be noted that the application is not any restrictions, those skilled in the art to the ad hoc rules
Member can any appropriate rule determine according to actual needs, as long as facilitating equally loaded and improving domain name mapping speed.
It, can be according to real network load situation dynamic configuration front end name server according to one embodiment of the application
Number of servers in cluster.
Specifically, when the front end domain name server cluster quantity that actually the received domain name mapping from client is requested
More than or less than front end domain name server cluster currently accessible data volume when, can be according to the data processing energy of name server
Power and actual domain name analysis request quantity increase or decrease the quantity of name server in the domain name server cluster of front end.
It, can be according to real network load situation dynamic configuration rear end domain name service according to another embodiment of the application
Number of servers in device cluster.
Specifically, when rear end domain name server cluster actually it is received by front end domain name server cluster forward Lai domain
Name analysis request data volume be more than or less than rear end domain name server cluster currently accessible data volume when, can be according to domain name
The data-handling capacity and actual domain name analysis request quantity of server increase or decrease domain name in the domain name server cluster of rear end
The quantity of server.
The name server in step 202, rear end domain name server cluster can be requested according to domain name mapping in domain
It is inquired in name server buffer cluster, to determine whether there is domain name mapping result.
When determining there are when domain name parsing result, proceed to step 205.In step 205, rear end domain name server cluster
In the name server translate domain names into result and return to corresponding name server in the domain name server cluster of front end, so as to
Result is translated domain names by the corresponding name server in the domain name server cluster of front end and returns to client.
When determining there is no when domain name mapping result, proceed to step 203.In step 203, rear end domain name server set
The name server in group obtains domain name mapping result by carrying out recursive query to remote server.
Specifically, when can not find domain name mapping result in cache cluster, being somebody's turn to do in the domain name server cluster of rear end
Name server can obtain domain name mapping result by carrying out recursive query to remote server.
It, can be in each name server of rear end domain name server cluster in advance according to one embodiment of the application
The destination file of top level domain is set.
Specifically, since recursive query is usually inquiry step by step from top level domain to target ip address, it can be with
The destination file of a part of top level domain is preset by each name server in the domain name server cluster of rear end to contract
The resolution path of short recursive query, so as to shorten the response time.
In a specific embodiment, possess specifically for example, one can be built in the domain name server cluster of rear end
The primary name server of the destination file of top level domain such as rhizosphere, the domain com, the domain net etc., and can be every the specific period
Dynamic updates the destination file of these top level domain on the primary name server.In addition, primary name server can will thereon
Top level domain destination file copy to as from other domain name service in the rear end domain name server cluster of name server
On device, for being used when recursive query.
As it can be seen that passing through the result text of preset top level domain on each name server in the domain name server cluster of rear end
Part can shorten the time-consuming of recursive query, further increase domain name mapping speed.
After obtaining domain name mapping result by recursive query, step 204 may proceed to, that is, translate domain names into result
Cache cluster is stored, for calling directly when subsequently received same domain name analysis request.The detailed content of this step can join
See that details are not described herein again in relation to the description of step 102 in Fig. 1.
Step 205 is then proceeded to, result is translated domain names by the name server in the domain name server cluster of rear end
The corresponding name server in the domain name server cluster of front end is returned to, so as to by the corresponding field in the domain name server cluster of front end
Name server translates domain names into result and returns to client.
It should be noted that step 204 is not limited to carry out before step 205, but can also with step 205 simultaneously into
Row either carries out after step 205, that is, translating domain names into the step of result storage is to name server cache cluster can be with
It is carried out prior to, concurrently with, or after the step of forward end domain name server cluster returns to domain name parsing result.
According to one embodiment of the application, method 200 be may further include through custom protocol to cache cluster
Carry out the step (not shown) of operation and maintenance.
It, can when needing the operation such as example to be increased to cache cluster progress operation and maintenance, delete, modify, inquire
To be realized by custom protocol.For example, when needing to be updated the domain name destination file stored in cache cluster, it can
With by the communication protocol between customized rear end domain name server cluster and cache cluster, to specified domain name destination file into
Row increases, is deleted or modified.Equally, when needing to inquire in cache cluster with the presence or absence of domain name mapping result, can pass through
The customized communication protocol between cache cluster is inquired.According to one embodiment of the application, cache cluster can make
With list (list) structure.When rear end name server is inquired in cache cluster with the presence or absence of domain name mapping result, if
The current version of existing domain name is not present, it is possible to provide workable domain name records the domain name in the past.
Specifically, passing through customized association when the main storage device in cache cluster receives the above-mentioned name server that comes from
When discussing the message sent, the message is parsed according to the specific fields in message first, then according to parsing result slow
It deposits and carries out corresponding operation and maintenance in cluster, e.g., increased, deleted, inquired, modify etc. and operate.
So far the method for domain name mapping according to another embodiment of the application is described, wherein by name server collection
Group is functionally divided into front end domain name server cluster and rear end domain name server cluster, passes through front end domain name server cluster
The distribution and management operation requested domain name mapping are executed, and specific domain name mapping is completed by rear end domain name server cluster
Operation equally loaded and can improve domain name mapping speed in the case where loading larger situation from there through the cooperation of the two.
With reference to the structural block diagram that Fig. 3, Fig. 3 are according to the device 300 for domain name mapping of the application one embodiment.
As shown in figure 3, device 300 may include: receiving module 301, asked for receiving the domain name mapping from client
It asks；Enquiry module 301, for according to domain name mapping request nslookup parsing result in name server cache cluster；With
And return module 303, client is returned to for translating domain names into result.
According to one embodiment of the application, receiving module 301 be may further include: receiving submodule, for receiving
The domain name mapping request from client forwarded by front end domain name server cluster；Also, enquiry module further comprises: returning
Submodule is returned, front end domain name server cluster is returned to for translating domain names into result, to be incited somebody to action by front end domain name server cluster
Domain name mapping result returns to client.
According to one embodiment of the application, device 300 be may further include: preset module, be used for preset top level domain
Domain name destination file.
According to one embodiment of the application, device 300 be may further include: recursive query module, for when in domain
When inquiring failure in name server buffer cluster, domain name mapping result is obtained by carrying out recursive query to remote server.
According to one embodiment of the application, device 300 be may further include: memory module, for translating domain names into
As a result name server cache cluster is arrived in storage.
According to one embodiment of the application, device 300 be may further include: operation and maintenance module, for passing through
Custom protocol carries out operation and maintenance to name server cache cluster.
So far the device for domain name mapping according to the embodiment of the present application is described, wherein by using that can be taken by domain name
Each name server in business device cluster shared cache cluster stores domain name mapping as a result, to also overcome domain name service
The problem that device single machine cache size is restricted and single machine cache contents cannot be shared improves domain name server cluster and executes domain
Cache hit rate when name parsing, reduces recursive query number, and then improve the speed of domain name mapping.
With reference to the schematic diagram that Fig. 4, Fig. 4 are according to the system 400 for domain name mapping of the application one embodiment.
As shown in figure 4, system 400 may include: domain name server cluster 410, it is used for: receives from client 420
Domain name mapping request；According to domain name mapping request nslookup parsing result in name server cache cluster 430；By domain name
Parsing result returns to client 410；And name server cache cluster 430, it is used for: storage domain name server cluster 410
Pass through recursive query domain name mapping result obtained.
According to one embodiment of the application, domain name server cluster 410 be may further include: front end name server
Cluster is used for: receiving the domain name mapping request from client 420；It translates domain names into request and is transmitted to rear end name server
Cluster；Receive the domain name mapping result returned from rear end domain name server cluster；And it translates domain names into result and returns to client
End；It with rear end domain name server set, is used for: the domain from client 420 for receiving to be forwarded by front end domain name server cluster
Name analysis request；According to domain name mapping request nslookup parsing result in cache cluster 430；Translate domain names into result return
Give front end domain name server cluster.
According to one embodiment of the application, each name server in the domain name server cluster of rear end can be preset
The domain name destination file of top level domain.
According to one embodiment of the application, rear end domain name server cluster can be further used for: when in domain name service
When inquiring failure in device cache cluster 430, domain name mapping result is obtained by carrying out recursive query to remote server.
According to one embodiment of the application, domain name server cluster can be further used for translating domain names into result storage
To name server cache cluster 430.
According to one embodiment of the application, domain name server cluster can be further used for through custom protocol to domain
Name server buffer cluster 430 carries out operation and maintenance.
According to the system for domain name mapping of the embodiment of the present application, it can equally overcome name server single machine caching big
The small problem being restricted and single machine cache contents cannot be shared improves caching when domain name server cluster executes domain name mapping
Hit rate reduces recursive query number, and then improves the speed of domain name mapping.
In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net
Network interface and memory.Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM)
And/or the forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable Jie
The example of matter.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices
Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap
Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method of element, commodity or equipment.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art
For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal
Replacement, improvement etc., should be included within the scope of the claims of this application.
Claims (10)
1. a kind of system for domain name mapping, comprising:
The common domain name server cluster for carrying out resource allocation, is used for:
Receive the domain name mapping request from client；
Domain name analysis request is transmitted to domain name resolution server cluster；
Receive the domain name mapping result returned from domain name resolution server cluster；And
Domain name parsing result is returned into the client；
The domain name resolution server cluster for carrying out domain name mapping, is used for:
Receive the domain name analysis request of common domain name server cluster forwarding；
According to domain name analysis request nslookup parsing result in the buffer, and in caching query failure, by remote
Journey server carries out recursive query to obtain domain name parsing result；And
Domain name parsing result is returned into the common domain name server cluster.
2. the system as claimed in claim 1,
The common domain name server cluster is used for the operator used according to the client for sending domain name analysis request, will
Domain name analysis request is transmitted to the corresponding domain name resolution server cluster of the operator, wherein different operations
Quotient corresponds to different domain name resolution server clusters.
3. system as claimed in claim 2,
The common domain name server cluster includes one or more groups of common domain name child servers, every group of common domain name child servers
The corresponding domain name mapping request for receiving an operator.
4. the system as claimed in claim 1,
The common domain name server cluster is used for the IP address carried according to domain name analysis request, and domain name is parsed
Request the corresponding domain name resolution server cluster of IP address section where being transmitted to the IP address, wherein different domains
Name resolution server cluster corresponds to different IP address sections.
5. the system as claimed in claim 1,
Domain name resolution server cluster includes:
First domain name resolution server cluster, is used for:
According to domain name analysis request nslookup parsing result in the buffer；And
Domain name parsing result is returned into the common domain name server cluster；
Second domain name resolution server cluster, is used for:
And in caching query failure, domain name parsing result is obtained by carrying out recursive query to remote server.
6. the system as claimed in claim 1, domain name resolution server cluster is also used to:
Cache the domain name parsing result that the remote server returns.
7. the system as claimed in claim 1, domain name resolution server cluster is also used to:
The destination file of caching at least partly top level domain in advance.
8. system as claimed in claim 7, domain name resolution server cluster is also used to: dynamic updates at predetermined time intervals
The destination file of the top level domain of caching.
9. the system as claimed in claim 1,
Domain name resolution server cluster is also used to: carrying out operation and maintenance to the caching by custom protocol.
10. the system as claimed in claim 1, the caching is the name server institute in domain name resolution server cluster
Shared spatial cache.
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| CN104378452B (en) | 2019-02-15 |
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