CN108243265A - A kind of dns resolution processing method and processing device - Google Patents
A kind of dns resolution processing method and processing device Download PDFInfo
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- CN108243265A CN108243265A CN201611229513.5A CN201611229513A CN108243265A CN 108243265 A CN108243265 A CN 108243265A CN 201611229513 A CN201611229513 A CN 201611229513A CN 108243265 A CN108243265 A CN 108243265A
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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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Abstract
The embodiment of the present invention provides a kind of dns resolution processing method and processing device, the method includes：Base station receives the dns resolution request that mobile terminal is sent, and the dns resolution request carries domain-name information to be resolved；If the analysis result that domain name information is previously stored in the dns server of the base station side setting is known in the base station judgement, according to the storage duration of the analysis result, newer analysis result is sent to the mobile terminal.Described device performs the above method.Dns resolution processing method and processing device provided in an embodiment of the present invention, effectively reduces the radio resource occupation rate of common domain name dns resolution, and accelerates the speed of common domain name dns resolution.
Description
Technical field
The present embodiments relate to mobile communication technology fields, and in particular to a kind of dns resolution processing method and processing device.
Background technology
With the fast development of mobile communication technology, people access website by using mobile terminal more and more,
To obtain more information.
Domain name analysis system (Domain Name System, hereinafter referred to as DNS), the visit that user can be helped more convenient
Ask internet.Due to the presence of DNS, Internet user can directly be realized when website is accessed using domain name, without
With remembeing IP address used in website.The behavior that corresponding IP address is eventually found by domain name is called domain name mapping.Domain name
Parsing is only responsible for user and finds the corresponding IP records of a certain domain name, and user is resolved to fixed when initiating dns resolution request
In IP address.When user needs to parse domain name, it can all be taken according to local cache, local dns server caching, local dns
Business device (include iteration) and the sequence of root server are parsed, for wireless communication networks, when needing to pass through this
Ground dns server caching, local dns server or root server come when completing dns resolution service, be required for mobile terminal with
It is interacted between base station, base station and core net.It can pass through multiple domain servers for the dns resolution for commonly using domain name to detour to need
The resource wanted, it is relatively high for the consumption of radio resource, while time delay is high, inquiry velocity is slow, and the time delay that user perceives is longer.
Therefore, the radio resource occupation rate of common domain name dns resolution how is reduced, and accelerates common domain name dns resolution
Speed, becoming need solve the problems, such as.
Invention content
In view of the problems of the existing technology, the embodiment of the present invention provides a kind of dns resolution processing method and processing device.
On the one hand, the embodiment of the present invention provides a kind of dns resolution processing method, the method includes：
Base station receives the dns resolution request that mobile terminal is sent, and the dns resolution request carries domain name letter to be resolved
Breath；
If the base station judgement, which is known in the dns server of the base station side setting, is previously stored with domain name information
Analysis result then according to the storage duration of the analysis result, sends newer analysis result to the mobile terminal.
On the other hand, the embodiment of the present invention provides a kind of dns resolution processing unit, including：
Receiving module, for receiving the dns resolution request of mobile terminal transmission, the dns resolution request, which carries, to be needed to be solved
The domain-name information of analysis；
Sending module, if for judging to know to be previously stored with domain name in the dns server of the base station side setting
The analysis result is then sent to the mobile terminal by the analysis result of information.
Dns resolution processing method and processing device provided in an embodiment of the present invention effectively reduces the nothing of common domain name dns resolution
Line resources occupation rate, and accelerate the speed of common domain name dns resolution.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of dns resolution processing method of the embodiment of the present invention；
Fig. 2 is the structure diagram that base station side of the embodiment of the present invention sets dns server；
Fig. 3 is mapping relations maintenance process figure of the embodiment of the present invention；
Fig. 4 is the structure diagram of dns resolution processing unit of the embodiment of the present invention；
Fig. 5 is device entity structure diagram provided in an embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
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
All other embodiments obtained without creative efforts shall fall within the protection scope of the present invention.
Fig. 1 is the flow diagram of dns resolution processing method of the embodiment of the present invention, as shown in Figure 1, provided in this embodiment
A kind of dns resolution processing method, includes the following steps：
S1：Base station receives the dns resolution request that mobile terminal is sent, and the dns resolution request carries domain to be resolved
Name information.
Specifically, Fig. 2 is the structure diagram that base station side of the embodiment of the present invention sets dns server, as shown in Fig. 2, base
It stands and receives the dns resolution request that mobile terminal is sent, the dns resolution request carries domain-name information to be resolved.It needs
Bright is：When mobile terminal needs to parse domain-name information, it can first pass through and be looked into the caching of DNS resolver in the terminal
Whether look for has the analysis result of the domain-name information, if so, be just done directly the parsing of the domain-name information, if not provided, just to
Base station sends dns resolution request, and dns resolution request can carry domain-name information to be resolved, but do not limit specifically.
S2：If the base station judgement, which is known in the dns server of the base station side setting, is previously stored with domain name letter
The analysis result of breath then according to the storage duration of the analysis result, sends newer analysis result to the mobile terminal.
Specifically, if base station judgement, which is known in the dns server of the base station side setting, is previously stored with the domain
The analysis result of name information then according to the storage duration of the analysis result, sends newer analysis result to described mobile whole
End.It should be noted that：Analysis result can parse the IP that corresponding authoritative name server is asked with the dns resolution
Address, but do not limit specifically.The dns server of base station side setting often receives the IP of the authoritative name server parsed
Address is stored in local, and updates storage time TSU, and sends newer analysis result simultaneously to the mobile terminal, can
According to newer storage time TSU, to confirm the storage duration of analysis result.
Dns resolution processing method provided in an embodiment of the present invention effectively reduces the radio resource of common domain name dns resolution
Occupation rate, and accelerate the speed of common domain name dns resolution.
It is described then according to the storage duration of the analysis result on the basis of above-described embodiment, send newer parsing
As a result the mobile terminal is given, including：
If the base station judges to know that the analysis result storage duration is less than prefixed time interval, directly by the solution
Result is analysed as newer analysis result, and is sent to the mobile terminal.
Specifically, if the base station judges to know that the analysis result storage duration is less than prefixed time interval, directly
Using the analysis result as newer analysis result, and it is sent to the mobile terminal.It should be noted that：Between preset time
It, can in the case where analysis result storage duration is less than prefixed time interval every can independently be set according to actual conditions
To be interpreted as the analysis result before the deadline, therefore can be directly using the analysis result as newer analysis result, concurrently
Give mobile terminal.
If the base station judges to know that the analysis result storage duration is more than or equal to the prefixed time interval, outward
Portion's dns server forwards the dns resolution request, correspondingly, the newer analysis result that the external dns server is returned
It is stored in the dns server of the base station side setting, records new storage time, and be sent to the mobile terminal simultaneously.
Specifically, if the base station judges to know that the analysis result storage duration is more than or equal between the preset time
Every then to the external dns server forwarding dns resolution request, correspondingly, the update that the external dns server is returned
Analysis result be stored in the dns server of base station side setting, record new storage time, and be sent to simultaneously described
Mobile terminal.It should be noted that：In the case where analysis result storage duration is more than or equal to prefixed time interval, it is possible to understand that
For the analysis result not before the deadline, it is therefore desirable to external dns server (it is as shown in Figure 2 except base station side server with
Outer dns server) the forwarding dns resolution request, external server can be that local dns server (includes the sheet of iteration
Ground dns server), root server etc., but do not limit specifically.The external server for completing domain name mapping to be resolved is returned
Newer analysis result be stored in base station side setting dns server it is local, record new storage time TSU, and send out simultaneously
Give the mobile terminal.
Dns resolution processing method provided in an embodiment of the present invention, by the way that analysis result is stored between duration and preset time
Every making comparisons, the radio resource occupation rate of common domain name dns resolution has been advanced optimized.
On the basis of above-described embodiment, the method further includes：
Mapping relations between the base station generation domain name information and the analysis result, the mapping relations setting
There is mark TTL, wherein, whether before the deadline the mark TTL characterizes the mapping relations.
Specifically, the mapping relations between the base station generation domain name information and the analysis result, the mapping
Relationship is provided with mark TTL, wherein, whether before the deadline the mark TTL characterizes the mapping relations.Need what is illustrated
It is：Mapping relations can be understood as domain-name information and to the one-to-one relationship of the analysis result of the domain-name information, i.e., N number of domain name
Information is corresponding with N number of analysis result to the domain-name information, and corresponding mapping relations also have N number of.Identify TTL (Time To
Live, hereinafter referred to as " TTL ") it can be understood as：For whether identifying the analysis result to the domain-name information in mapping relations
Before the deadline.
Dns resolution processing method provided in an embodiment of the present invention by the mark TTL of mapping relations, can be obtained intuitively
Know the term of validity of mapping relations.
On the basis of above-described embodiment, the method further includes：
If the base station judges to know that the storage duration of the mapping relations is more than or equal to the prefixed time interval, will
The mark TTL of the mapping relations is set as invalid.
Specifically, if the base station judges to know that the storage duration of the mapping relations is more than or equal between the preset time
Every the mark TTL of the mapping relations then is set as invalid, continues to execute the flow that following mapping relations are safeguarded.It needs
What is illustrated is：If the base station judges to know that the storage duration of the mapping relations is less than the prefixed time interval, directly
Terminate the flow that mapping relations are safeguarded.
The base station forwards the dns resolution to ask to external dns server, and is returned according to the external dns server
The newer analysis result returned, updates the mapping relations.
Specifically, the base station forwards the dns resolution to ask to external dns server, and taken according to the external DNS
The newer analysis result that business device returns, updates the mapping relations.It should be noted that：If newer analysis result in the past
Be stored in base station side setting dns server local analysis result compare after, do not change, it is only necessary to update parsing tie
The storage time TSU (Time Set-Up, hereinafter referred to as " TSU ") of the corresponding mapping relations of fruit；If newer analysis result with
Before be stored in base station side setting dns server local analysis result compare after, change, then will be previously stored in base station
The corresponding mapping relations of analysis result of the dns server local of side setting replace with the corresponding mapping of update analysis result and close
System, is formed newer mapping relations, and records the storage time TSU of update mapping relations.
The base station resets the mark for updating mapping relations according to the storage time of the newer mapping relations
TTL is effective.
Specifically, storage time of the base station according to the newer mapping relations, resets the update mapping relations
Mark TTL be effective.
Dns resolution processing method provided in an embodiment of the present invention, by judging the storage duration of mapping relations, be conducive into
One step safeguards mapping relations.
It is described and according to the newer analysis result that the external dns server returns on the basis of above-described embodiment,
The mapping relations are updated, including：
If the base station judges to know that the newer analysis result does not change, the mapping relations are updated
Storage time.
Specifically, if the base station judges to know that the newer analysis result does not change, reflected described in update
Penetrate the storage time of relationship.Illustrate in the above-described embodiments, repeat no more.
Dns resolution processing method provided in an embodiment of the present invention by judging whether analysis result changes, is conducive to
Further safeguard mapping relations.
It is described and according to the newer analysis result that the external dns server returns on the basis of above-described embodiment,
The mapping relations are updated, including：
If the base station judges to know that the newer analysis result changes, the mapping relations are replaced with more
New analysis result to form newer mapping relations, and records the storage time of the newer mapping relations.
Specifically, if the base station judges to know that the newer analysis result changes, by the mapping relations
Newer analysis result is replaced with, to form newer mapping relations, and records the storage time of the newer mapping relations.
Illustrate in the above-described embodiments, repeat no more.
Dns resolution processing method provided in an embodiment of the present invention by judging whether analysis result changes, is conducive to
Further safeguard mapping relations.
Fig. 3 is mapping relations maintenance process figure of the embodiment of the present invention, as shown in Figure 3：
If the storage duration that mapping relations are stored in the dns server of base station side setting is not above prefixed time interval,
Then terminate mapping relations maintenance process.
If the storage duration that mapping relations are stored in the dns server of base station side setting is more than prefixed time interval, will reflect
It penetrates relationship TTL to be labeled as in vain, then to the forwarding dns resolution request of external dns server, and updates mapping relations, if mapping pass
It is not change compared in the dns server that pre-selection is stored in base station side setting, identity map relationship TTL is has again
It imitates while updates storage time TSU, terminate mapping relations maintenance process.
If mapping relations change compared in the dns server that pre-selection is stored in base station side setting, will prestore
Replace with the corresponding mapping relations of update analysis result in local mapping relations, new logo mapping relations of laying equal stress on TTL for effectively,
Time TSU is updated storage simultaneously, terminates mapping relations maintenance process.
Dns resolution processing method provided in an embodiment of the present invention, by judging the storage duration of mapping relations, be conducive into
One step safeguards mapping relations.
Fig. 4 is the structure diagram of dns resolution processing unit of the embodiment of the present invention, as shown in figure 4, present embodiments providing
A kind of dns resolution processing unit, including receiving module 1 and sending module 2, wherein：
Receiving module 1 is used to receive the dns resolution request of mobile terminal transmission, and the dns resolution request, which carries, to be needed to be solved
The domain-name information of analysis, if sending module 2 is described for judging to know to be previously stored in the dns server of the base station side setting
The analysis result is then sent to the mobile terminal by the analysis result of domain-name information.
Specifically, receiving module 1 is used to receive the dns resolution request of mobile terminal transmission, the dns resolution request carries
There is domain-name information to be resolved, the dns resolution received request is sent to sending module 2 by receiving module 1, and sending module 2 is used
It, will if being previously stored with the analysis result of domain name information in the dns server for judging to know the base station side setting
The analysis result is sent to the mobile terminal.
Dns resolution processing unit provided in an embodiment of the present invention effectively reduces the radio resource of common domain name dns resolution
Occupation rate, and accelerate the speed of common domain name dns resolution.
On the basis of above-described embodiment, the sending module 2 is specifically used for：
If judgement knows that the analysis result storage duration is less than prefixed time interval, directly the analysis result is made
For newer analysis result, and the mobile terminal is sent to, if judging to know that the analysis result storage duration is more than or equal to
The prefixed time interval then forwards the dns resolution to ask to external dns server, correspondingly, the external DNS is taken
The newer analysis result that business device returns is stored in the dns server of the base station side setting, records new storage time, and
It is sent to the mobile terminal simultaneously.
Specifically, when if the sending module 2 is specifically used for judging to know that the analysis result storage duration is less than default
Between be spaced, then directly using the analysis result as newer analysis result, and be sent to the mobile terminal, if judge know
The analysis result storage duration is more than or equal to the prefixed time interval, then forwards the dns resolution to external dns server
Request, correspondingly, the newer analysis result that the external dns server is returned is stored in the DNS of the base station side setting
In server, new storage time is recorded, and is sent to the mobile terminal simultaneously.
Dns resolution processing unit provided in an embodiment of the present invention, by the way that analysis result is stored between duration and preset time
Every making comparisons, the radio resource occupation rate of common domain name dns resolution has been advanced optimized.
On the basis of above-described embodiment, described device further includes generation module 3：
Generation module 3 is used to generate the mapping relations between domain name information and the analysis result, and the mapping is closed
System is provided with mark TTL, wherein, whether before the deadline the mark TTL characterizes the mapping relations.
Specifically, generation module 3 is used to generate the mapping relations between domain name information and the analysis result, it is described
Mapping relations are provided with mark TTL, wherein, whether before the deadline the mark TTL characterizes the mapping relations.
Dns resolution processing unit provided in an embodiment of the present invention by the mark TTL of mapping relations, can be obtained intuitively
Know the term of validity of mapping relations.
On the basis of above-described embodiment, the generation module 3 is specifically used for：
If judging to know, the storage duration of the mapping relations is more than or equal to the prefixed time interval, by the mapping
The mark TTL of relationship is set as invalid, the dns resolution is forwarded to ask to external dns server, and according to the external DNS
The newer analysis result that server returns, updates the mapping relations, according to the storage time of the newer mapping relations,
It is effective to reset the mark TTL of the update mapping relations.
Specifically, if the generation module 3 is specifically used for judging to know that the storage duration of the mapping relations is more than or equal to
The mark TTL of the mapping relations is then set as invalid by the prefixed time interval, to described in the forwarding of external dns server
Dns resolution is asked, and the newer analysis result returned according to the external dns server, updates the mapping relations, according to
The storage time of the newer mapping relations, it is effective to reset the mark TTL of the update mapping relations.
Dns resolution processing unit provided in an embodiment of the present invention, by judging the storage duration of mapping relations, be conducive into
One step safeguards mapping relations.
Dns resolution processing unit provided in this embodiment specifically can be used for performing the processing stream of above-mentioned each method embodiment
Journey, details are not described herein for function, is referred to the detailed description of above method embodiment.
Fig. 5 is device entity structure diagram provided in an embodiment of the present invention, as shown in figure 5, described device includes：Processing
Device (processor) 501, memory (memory) 502 and bus 503；
Wherein, the processor 501, memory 502 complete mutual communication by bus 503；
The processor 501 is used to call the program instruction in the memory 502, to perform above-mentioned each method embodiment
The method provided, such as including：The dns resolution request that mobile terminal is sent is received, the dns resolution request, which carries, to be needed to be solved
The domain-name information of analysis；If the solution that domain name information is previously stored in the dns server of the base station side setting is known in judgement
Analysis sends newer analysis result to the mobile terminal as a result, then according to the storage duration of the analysis result.
The present embodiment discloses a kind of computer program product, and the computer program product includes being stored in non-transient calculating
Computer program on machine readable storage medium storing program for executing, the computer program include program instruction, when described program instruction is calculated
When machine performs, computer is able to carry out the method that above-mentioned each method embodiment is provided, such as including：Mobile terminal is received to send
Dns resolution request, dns resolution request carries domain-name information to be resolved；If the base station side setting is known in judgement
Dns server in be previously stored with the analysis result of domain name information, then according to the storage duration of the analysis result, hair
Newer analysis result is sent to the mobile terminal.
The present embodiment provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage medium storing program for executing
Computer instruction is stored, the computer instruction makes the computer perform the method that above-mentioned each method embodiment is provided, example
Such as include：The dns resolution request that mobile terminal is sent is received, the dns resolution request carries domain-name information to be resolved；If
The analysis result that domain name information is previously stored in the dns server of the base station side setting is known in judgement, then according to institute
The storage duration of analysis result is stated, sends newer analysis result to the mobile terminal.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and aforementioned program can be stored in a computer read/write memory medium, the program
When being executed, step including the steps of the foregoing method embodiments is performed；And aforementioned storage medium includes：ROM, RAM, magnetic disc or light
The various media that can store program code such as disk.
The embodiments such as device described above are only schematical, wherein the unit illustrated as separating component
It may or may not be physically separate, the component shown as unit may or may not be physics list
Member, you can be located at a place or can also be distributed in multiple network element.It can be selected according to the actual needs
In some or all of module realize the purpose of this embodiment scheme.Those of ordinary skill in the art are not paying creativeness
Labour in the case of, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on such understanding, on
Technical solution is stated substantially in other words to embody the part that the prior art contributes in the form of software product, it should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including several fingers
It enables and (can be personal computer, server or the network equipment etc.) so that computer equipment is used to perform each implementation
Method described in certain parts of example or embodiment.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the embodiment of the present invention rather than right
It is limited；Although the embodiment of the present invention is described in detail with reference to foregoing embodiments, the ordinary skill of this field
Personnel should understand that：It can still modify to the technical solution recorded in foregoing embodiments or to which part
Or all technical features carries out equivalent replacement；And these modifications or replacement, it does not separate the essence of the corresponding technical solution
The range of each embodiment technical solution of the embodiment of the present invention.
Claims (10)
1. a kind of dns resolution processing method, which is characterized in that including：
Base station receives the dns resolution request that mobile terminal is sent, and the dns resolution request carries domain-name information to be resolved；
If the parsing that domain name information is previously stored in the dns server of the base station side setting is known in the base station judgement
As a result, newer analysis result is then sent to the mobile terminal according to the storage duration of the analysis result.
It is 2. according to the method described in claim 1, it is characterized in that, described then according to the storage duration of the analysis result, hair
Newer analysis result is sent to the mobile terminal, including：
If the base station judges to know that the analysis result storage duration is less than prefixed time interval, directly the parsing is tied
Fruit is sent to the mobile terminal as newer analysis result；
If the base station judges to know that the analysis result storage duration is more than or equal to the prefixed time interval, to outside
Dns server forwards the dns resolution request, correspondingly, the newer analysis result that the external dns server is returned is deposited
It is stored in the dns server of the base station side setting, records new storage time, and be sent to the mobile terminal simultaneously.
3. method according to claim 1 or 2, which is characterized in that the method further includes：
Mapping relations between the base station generation domain name information and the analysis result, the mapping relations are provided with mark
Know TTL, wherein, whether before the deadline the mark TTL characterizes the mapping relations.
4. according to the method described in claim 3, it is characterised in that it includes：
If the base station judges to know that the storage duration of the mapping relations is more than or equal to the prefixed time interval, by described in
The mark TTL of mapping relations is set as invalid；
The base station forwards the dns resolution to ask to external dns server, and returned according to the external dns server
Newer analysis result updates the mapping relations；
According to the storage time of the newer mapping relations, resetting the mark TTL for updating mapping relations is for the base station
Effectively.
It is 5. according to the method described in claim 4, it is characterized in that, described and returned more according to the external dns server
New analysis result updates the mapping relations, including：
If the base station judges to know that the newer analysis result does not change, the storage of the mapping relations is updated
Time.
It is 6. according to the method described in claim 4, it is characterized in that, described and returned more according to the external dns server
New analysis result updates the mapping relations, including：
If the base station judges to know that the newer analysis result changes, the mapping relations are replaced with newer
Analysis result to form newer mapping relations, and records the storage time of the newer mapping relations.
7. a kind of dns resolution processing unit, which is characterized in that including：
Receiving module, for receiving the dns resolution request of mobile terminal transmission, the dns resolution request carries to be resolved
Domain-name information；
Sending module, if for judging to know to be previously stored with domain name information in the dns server of the base station side setting
Analysis result, then the analysis result is sent to the mobile terminal.
8. device according to claim 7, which is characterized in that the sending module is specifically used for：
If judgement knows that the analysis result storage duration is less than prefixed time interval, directly using the analysis result as more
New analysis result, and it is sent to the mobile terminal；
If judgement knows that the analysis result storage duration is more than or equal to the prefixed time interval, to external dns server
The dns resolution is forwarded to ask, correspondingly, the newer analysis result of the external dns server return is stored in described
In the dns server of base station side setting, new storage time is recorded, and be sent to the mobile terminal simultaneously.
9. device according to claim 7 or 8, which is characterized in that described device further includes：
Generation module, for generating the mapping relations between domain name information and the analysis result, the mapping relations are set
Mark TTL is equipped with, wherein, whether before the deadline the mark TTL characterizes the mapping relations.
10. device according to claim 9, which is characterized in that the generation module is specifically used for：
If judging to know, the storage duration of the mapping relations is more than or equal to the prefixed time interval, by the mapping relations
Mark TTL be set as invalid；
The dns resolution request, and the newer solution returned according to the external dns server are forwarded to external dns server
Analysis is as a result, update the mapping relations；
According to the storage time of the newer mapping relations, it is effective to reset the mark TTL of the update mapping relations.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110113447A (en) * | 2019-06-27 | 2019-08-09 | 网易（杭州）网络有限公司 | Domain name analytic method and device |
| CN111064775A (en) * | 2019-12-05 | 2020-04-24 | 深圳市任子行科技开发有限公司 | Method and system for portal authentication aiming at HTTPS (hypertext transfer protocol secure) protocol in bypass deployment mode |
| CN111565195A (en) * | 2020-05-21 | 2020-08-21 | 杭州安恒信息技术股份有限公司 | Challenge black hole attack defense method of distributed system and distributed system |
| CN111756739A (en) * | 2020-06-24 | 2020-10-09 | 中国银行股份有限公司 | Domain name resolution method and related equipment |
| CN113992627A (en) * | 2021-10-26 | 2022-01-28 | 北京字节跳动网络技术有限公司 | Domain name resolution method, device, equipment and medium |
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