CN104935683A - Buffer processing method and device for domain name resolution - Google Patents
Buffer processing method and device for domain name resolution Download PDFInfo
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- CN104935683A CN104935683A CN201510370075.3A CN201510370075A CN104935683A CN 104935683 A CN104935683 A CN 104935683A CN 201510370075 A CN201510370075 A CN 201510370075A CN 104935683 A CN104935683 A CN 104935683A
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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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- 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
Abstract
The invention discloses a buffer processing method and device for domain name resolution. The buffer processing method for domain name resolution comprises the steps of acquiring a domain name requested by a domain name query request; generating the correspondence of an internet protocol (IP) address and the domain name, which the domain name points at; and buffering the correspondence of the IP address and the domain name, which the domain name points at. Through adoption of the method, the problem in related techniques that the correspondence of the domain name and the IP address of the corresponding server cannot be buffered in advance is solved.
Description
Technical field
The present invention relates to data processing field, in particular to a kind of method for caching and processing for domain name mapping and device.
Background technology
In mobile network, reverse content distributing network (Content Delivery Network the is called for short CDN) service of acceleration net flow for helping mobile operator to reduce, and the online improving netizen in mobile network is experienced.Reverse CDN adopts domain name service (Domain Name Service is called for short DNS) redirected mode to carry out the guiding of certain content.First, user's request is shifted to an earlier date (forward) on the DNS of CDN service provider by the local Domain Name Service (Local Domain Name Service is called for short LDNS) of operator, provides DNS to be redirected by CDN service provider.
The DNS that CDN service provider provides maintains the list of a large amount of domain name server protocol corresponding with it (Internet Protocol is called for short IP) address.If ask domain name to match domain name in list, so dns server returns the corresponding relation of the server ip address of asked domain name and its correspondence, if do not match the domain name in list, so dns server first carries out recursion resolution, return again parse ask the corresponding relation of the server ip address of domain name and its correspondence, like this, the delay of host query IP address is caused.
In order to reduce the delay of host query IP address, in the related, dns server provides a kind of temporal cache mechanism, like this, cache mechanism can the corresponding relation of the buffer memory domain name server ip address corresponding with it, wherein, this corresponding relation is that dns server obtains when resolving the inquiry of the domain name request that main frame sends, this scheme is at the term of validity (Time To Live, be called for short TTL) before, when main frame sends this inquiry of the domain name request again, then directly can obtain this domain name server ip address corresponding with it according to the above-mentioned corresponding relation of buffer memory.Can be found out by foregoing description, the program can only the corresponding relation of the passive buffer memory domain name server ip address corresponding with it, namely, the inquiry of the domain name request of main frame is only received at dns server, and after returning the corresponding relation of this domain name server ip address corresponding with it, the corresponding relation of the server ip address that this domain name of cache mechanism ability buffer memory is corresponding with it, can not predict the inquiry of the domain name request of main frame, and can not the above-mentioned corresponding relation of buffered in advance.In addition, in the related, after TTL, also need to safeguard by again inquiring about DNS server protocol (Internet Protocol the is called for short IP) address list that domain name is corresponding with it, therefore, the analyzing efficiency of DNS is not high.
For can not the problem of corresponding relation of the buffered in advance domain name server ip address corresponding with it in correlation technique, at present effective solution be not yet proposed.
Summary of the invention
The main purpose of the embodiment of the present invention is to provide a kind of method for caching and processing for domain name mapping and device, can not the problem of corresponding relation of the buffered in advance domain name server ip address corresponding with it to solve in correlation technique.
To achieve these goals, according to an aspect of the embodiment of the present invention, a kind of method for caching and processing for domain name mapping is provided.The method comprises: obtain the domain name that inquiry of the domain name request is asked; Generate the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name; And the IP address pointed to of the above-mentioned domain name of buffer memory and the corresponding relation of above-mentioned domain name.
Further, after the domain name that acquisition inquiry of the domain name request is asked, above-mentioned method for caching and processing also comprises: the request number of times of adding up above-mentioned domain name; And judge whether the request number of times of above-mentioned domain name is greater than predetermined threshold value, wherein, if judge that the request number of times of above-mentioned domain name is greater than above-mentioned predetermined threshold value, then generate the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name, if judge that the request number of times of above-mentioned domain name is not more than above-mentioned predetermined threshold value, then do not generate the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name.
Further, the domain name that acquisition inquiry of the domain name request is asked comprises: the log information that the local domain name server monitoring operator exports; And resolve above-mentioned log information, extract the domain name of above-mentioned request, wherein, extract domain name according to the sequencing of the time of the domain name of request, or, extract domain name according to the size order of the request number of times of the domain name of request.
Further, after statistically stating the request number of times of domain name and the domain name of the above-mentioned request of extraction, above-mentioned method for caching and processing also comprises: the curve chart that the request frequency obtaining each above-mentioned domain name changes with corresponding domain name; Domain name request number of times above-mentioned in above-mentioned curve chart being greater than above-mentioned predetermined threshold value generates domain name list, wherein, IP address that above-mentioned domain name points to is generated and the corresponding relation of above-mentioned domain name comprises: the corresponding relation generating each domain name in the IP address and above-mentioned domain name list that above-mentioned domain name points to.
Further, after the IP address of buffer memory above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name, above-mentioned method for caching and processing also comprises: whether the corresponding relation of the IP address and above-mentioned domain name of detecting the sensing of above-mentioned domain name changes; If detect that the corresponding relation of the IP address that above-mentioned domain name is pointed to and above-mentioned domain name changes, then upgrade the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name; And the corresponding relation of the IP address pointed to of the above-mentioned domain name after buffer update and above-mentioned domain name.
Further, while the corresponding relation of the IP address and above-mentioned domain name that generate the sensing of above-mentioned domain name, above-mentioned method for caching and processing also comprises: the buffer memory entry-into-force time of recording above-mentioned corresponding relation; And the buffer memory entry-into-force time of having recorded is changed according to user's request.
Further, the corresponding relation of the IP address that above-mentioned domain name is pointed to and above-mentioned domain name is the corresponding relation without the need to the buffered in advance according to request, after the IP address of buffer memory above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name, above-mentioned method for caching and processing also comprises: the inquiry of the domain name request receiving user's input; Judge whether the corresponding relation of the IP address that the domain name that the inquiry of the domain name request that above-mentioned user inputs asks is pointed to and this domain name satisfies the demand the corresponding relation of according to request buffer memory; If so, the corresponding relation of above-mentioned needs buffer memory according to request is then used to reply the inquiry of the domain name request that above-mentioned user inputs; And if not, then use the above-mentioned corresponding relation without the need to the buffered in advance according to request to reply the inquiry of the domain name request that above-mentioned user inputs.
To achieve these goals, according to the another aspect of the embodiment of the present invention, provide a kind of buffer processing device for domain name mapping.This device comprises: the first acquiring unit, for obtaining the domain name that inquiry of the domain name request is asked; First generation unit, for generating the IP address and the corresponding relation of above-mentioned domain name that above-mentioned domain name points to; And buffer unit, the IP address pointed to for the above-mentioned domain name of buffer memory and the corresponding relation of above-mentioned domain name.
Further, above-mentioned buffer processing device also comprises: statistic unit, for after obtaining the domain name that inquiry of the domain name request asks, adds up the request number of times of above-mentioned domain name; And first judging unit, for judging whether the request number of times of above-mentioned domain name is greater than predetermined threshold value, wherein, above-mentioned first generation unit is used for when judging that the request number of times of above-mentioned domain name is greater than above-mentioned predetermined threshold value, generate the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name, when judging that the request number of times of above-mentioned domain name is not more than above-mentioned predetermined threshold value, do not generate the IP address of above-mentioned domain name sensing and the corresponding relation of above-mentioned domain name.
Further, above-mentioned first acquiring unit comprises: monitor module, the log information that the local domain name server for monitoring operator exports; And extraction module, for resolving above-mentioned log information, extract the domain name of above-mentioned request, wherein, the sequencing that said extracted module is used for the time of the domain name according to request extracts domain name, or, extract domain name according to the size order of the request number of times of the domain name of request.
By the present invention, adopt the domain name obtaining inquiry of the domain name request and ask; Generate the IP address of domain name sensing and the corresponding relation of domain name; And the IP address pointed to of buffer memory domain name and the corresponding relation of domain name, solving in correlation technique can not the problem of corresponding relation of the buffered in advance domain name server ip address corresponding with it, and then reaches the effect of corresponding relation of the buffered in advance domain name server ip address corresponding with it.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the buffer processing device for domain name mapping according to a first embodiment of the present invention;
Fig. 2 is the schematic diagram of the buffer processing device for domain name mapping according to a second embodiment of the present invention;
Fig. 3 is the schematic diagram of the buffer processing device for domain name mapping according to a third embodiment of the present invention;
Fig. 4 is the flow chart of the method for caching and processing for domain name mapping according to a first embodiment of the present invention; And
Fig. 5 is the flow chart of the method for caching and processing for domain name mapping according to a second embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein such as can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to embodiments of the invention, provide a kind of buffer processing device for domain name mapping, this buffer processing device being used for domain name mapping is for the corresponding relation of the buffered in advance domain name server ip address corresponding with it.
Fig. 1 is the schematic diagram of the buffer processing device for domain name mapping according to a first embodiment of the present invention.As shown in Figure 1, this device comprises: the first acquiring unit 10, first generation unit 20 and buffer unit 30.
The domain name that first acquiring unit 10 is asked for obtaining inquiry of the domain name request.In embodiments of the present invention, main frame sends domain name inquiry request to server, and the domain name that dns server sends to server for resolving main frame, first acquiring unit 10 directly can obtain the domain name that main frame sends, also can obtain the domain name of resolving through dns server, the domain name herein related to can comprise one or more.It should be noted that, in embodiments of the present invention, first acquiring unit 10 can obtain the domain name that inquiry of the domain name request is asked from the domain name list pre-set, wherein, the domain name of this place request can be stored in the domain name list pre-set according to the time sequencing of request, also can be stored in the domain name list pre-set according to the size order of the frequency of request, and main frame just same domain name repeatedly can send domain name inquiry request to server.Alternatively, the domain name that first acquiring unit 10 can use the low peak period of the Internet acquisition inquiry of the domain name request to ask 3:00 AM user, like this, not only can improve the efficiency obtaining the domain name that inquiry of the domain name request is asked, and the burden of the Internet can be alleviated, obtain domain name that inquiry of the domain name request asks in the time period of avoiding being on duty and cause the Internet to block up.
First generation unit 20 is for the IP address that generates domain name and point to and the corresponding relation of this domain name.Wherein, the domain name that the first generation unit 20 can be asked in inquiry of the domain name request, after the parsing of DNS, generates the IP address of domain name sensing and the corresponding relation of this domain name.It should be noted that, DNS is the abbreviation of domain name system or domain name service, it is a kernel service of internet, it is as a distributed data base that domain name and IP address can be mapped mutually, user can be made to access the Internet more easily, and do not spend the IP string remembeing directly to be read by machine.In addition, DNS is made up of resolver and name server.Name server refers to the domain name and corresponding IP address of preserving All hosts in this network, and has server domain name being converted to IP address function.
The corresponding relation of the IP address that the domain name that buffer unit 30 generates for buffer memory first generation unit 20 is pointed to and this domain name.In embodiments of the present invention, buffer unit 30, when the corresponding relation of the IP address that buffer memory domain name is pointed to and this domain name, can carry out buffer memory according to the genesis sequence of corresponding relation, also can carry out buffer memory according to the request frequency of domain name or request number of times.
By the present invention, adopt the domain name of the request of acquisition; Generate the IP address of domain name sensing and the corresponding relation of domain name; And the IP address pointed to of buffer memory domain name and the corresponding relation of domain name, solving in correlation technique can not the problem of corresponding relation of the buffered in advance domain name server ip address corresponding with it, and then reaches the effect of corresponding relation of the buffered in advance domain name server ip address corresponding with it.
Fig. 2 is the schematic diagram of the buffer processing device for domain name mapping according to a second embodiment of the present invention.
As shown in Figure 2, this embodiment can as preferred implementation embodiment illustrated in fig. 1, the buffer processing device of this embodiment, except the first acquiring unit 10, first generation unit 20 of comprising the first embodiment and buffer unit 30, also comprises: statistic unit 40 and the first judging unit 50.
The effect of the first acquiring unit 10 and identical in the first embodiment, do not repeat them here.
Statistic unit 40 for after obtaining the domain name that inquiry of the domain name request asks, the request number of times of statistics domain name.Particularly, in the invention process, statistic unit 40 can comprise one or more counter, and the corresponding domain name of each counter, like this, after the domain name that acquisition inquiry of the domain name request is asked, can judge whether counter corresponding to domain name has been triggered and has started counting, if judge that counter corresponding to domain name has been triggered and has started counting, then the counting of counter increases by 1, judge that counter corresponding to domain name is not triggered else if, then flip-flop number makes it start counting.Statistic unit 40 also can be preset Hash table, the keyword of this preset Hash table is domain name, cryptographic Hash is the request number of times of domain name, wherein, the keyword that different domain names is corresponding different, like this, after the domain name that acquisition inquiry of the domain name request is asked, can judge whether domain name exists in this preset Hash table, if judge that domain name exists in this preset Hash table, then cryptographic Hash increases by 1, judges that domain name does not exist in this preset Hash table else if, then increases the keyword of this domain name and correspondence thereof at this preset Hash table.
First judging unit 50 is for judging whether the request number of times of domain name is greater than predetermined threshold value, wherein, first generation unit is used for when judging that the request number of times of domain name is greater than predetermined threshold value, generate the IP address of domain name sensing and the corresponding relation of domain name, when judging that the request number of times of domain name is not more than predetermined threshold value, do not generate the IP address of domain name sensing and the corresponding relation of domain name.In the invention process, predetermined threshold value can be arranged according to user's request.Request number of times is more, and the Potential feasibility of user to the access of this domain name is larger, otherwise request number of times is fewer, and the Potential feasibility of user to the access of this domain name is less.Like this, can only to the larger domain name of the Potential feasibility of access with and the corresponding relation of corresponding server ip address carry out buffer memory, saved memory space, improve buffer efficiency.
In addition, the effect of buffer unit 30 and identical in the first embodiment, do not repeat them here.
Fig. 3 is the schematic diagram of the buffer processing device for domain name mapping according to a third embodiment of the present invention.
As shown in Figure 3, this embodiment can as preferred implementation embodiment illustrated in fig. 2, the buffer processing device of this embodiment comprises the first acquiring unit 10, first generation unit 20 of the second embodiment, buffer unit 30, statistic unit 40 and judging unit 50, wherein, the first acquiring unit 10 comprises monitoring module 101 and extraction module 102.
First generation unit 20, buffer unit 30, statistic unit 40 are identical with unit corresponding in the second embodiment with the effect of judging unit 50, do not repeat them here.
Monitor the log information that module 101 exports for the local domain name server monitoring operator.It should be noted that, because any netizen user must pass through ISP (Internet Service Provider, be called for short ISP) accessing Internet, like this, netizen user needs to visit through ISP the application that domain name provides, dns resolution is then the basic part of the Internet, netizen user accesses the Internet, all need the process through dns resolution, the resolution server that ISP is supplied to user is LDNS server, and visit domain name by ISP and DNS resolves domain name time can output journal information, like this, monitor module 101 and may be used for monitoring the log information of the local domain name server output of operator to obtain the access situation to each domain name, wherein, access situation comprises the access times and access time etc. of domain name.
Extraction module 102, for resolving log information, extracts the domain name of request, and wherein, the sequencing that extraction module is used for the time of the domain name according to request extracts domain name, or, extract domain name according to the size order of the request number of times of the domain name of request.Particularly, extraction module 102 can monitor the log information of operator's output to extract the domain name of netizen user's request by resolving monitoring module 101.
Alternatively, in embodiments of the present invention, above-mentioned buffer processing device can also comprise: second acquisition unit and the second generation unit.Second acquisition unit is used for after the request number of times of statistics domain name and the domain name of extraction request, the curve chart that the request frequency obtaining each domain name changes with corresponding domain name, and the second generation unit is used for domain name generation domain name list request number of times in curve chart being greater than predetermined threshold value.Wherein, generation unit can also be used for generating the corresponding relation of each domain name in the IP address and domain name list that domain name points to.Like this, the corresponding relation by only generating each domain name in domain name list reaches the effect of saving memory space and improving formation efficiency.In addition, the domain name list of generation can store domain name according to the time sequencing of domain name access, also can according to the size of the number of times of domain name request according to ascending or descending sequential storage domain name.
Alternatively, above-mentioned buffer processing device can also comprise: detecting unit and updating block.Wherein, after detecting unit is used for the corresponding relation of IP address and the domain name pointed in buffer memory domain name, whether the corresponding relation of the IP address and domain name of detecting domain name sensing changes; Updating block is used for when detecting that the corresponding relation of IP address that domain name is pointed to and domain name changes, upgrade the IP address of domain name sensing and the corresponding relation of domain name, accordingly, the corresponding relation of the IP address that the domain name after aforesaid buffer unit can also be used for buffer update is pointed to and domain name.Also namely, after detecting unit detects that IP address corresponding to domain name changes and updating block upgrades the corresponding relation of domain name in buffer unit and IP, the corresponding relation of the IP address that buffer unit also points to for the domain name after buffer update and domain name.Particularly, buffer unit refers to the domain name analysis system such as DNS, receives and the corresponding relation of buffer memory domain name and IP, and have received the buffer memory entry-into-force time for certain domain name.
During enforcement, need the time message queue pre-setting multiple grade, wherein, these time message queues are that the length of buffer memory entry-into-force time of the corresponding relation of IP address and this domain name pointed to according to domain name carries out grade classification, and the time message queue of different brackets correspond to different time spans, above-mentioned different time message queue can take time value as cycle, periodically nslookup.Particularly, can according to the length of the buffer memory entry-into-force time got, and the time message queue that the buffer memory entry-into-force time of the corresponding domain name got being put into the time span corresponding relation more corresponding than this domain name is short, and then whether the corresponding relation of the IP address and this domain name of detecting domain name sensing changes, and/or whether the IP address detecting domain name sensing changes, when change occurs arbitrarily, need again obtain the buffer memory entry-into-force time and record it, if and the buffer memory entry-into-force time self changes, the buffer memory entry-into-force time after according to change is then needed to be that domain name selects the time message queue of suitable grade to reappose.
Alternatively, while the corresponding relation of the IP address and domain name that generate domain name sensing, above-mentioned buffer processing device can also comprise: record cell.Record cell, for recording the buffer memory entry-into-force time of corresponding relation, particularly, obtains the buffer memory entry-into-force time from the response sending request domain name; And the buffer memory entry-into-force time of having recorded is changed according to user's request.Like this, intellectuality amendment can be carried out to the buffer memory entry-into-force time.
During enforcement, record cell can revise the buffer memory entry-into-force time dynamically.Wherein, while renewal domain name and corresponding relation thereof, whether the currency that record cell can compare the buffer memory entry-into-force time is identical with its history value, and record the currency number of times identical from history value and both different number of times, such as, suppose that the initial value of identical number of times and different number of times is 0.If currency is identical with history value, then both identical record number of times are increased by 1, if currency and history value are not identical, then both different record number of times are reduced 1.Wherein, when both identical record number of times are greater than 10, the increase buffer memory entry-into-force time is to 1.5 times of its history value; When both different record number of times are less than-10, the minimizing buffer memory entry-into-force time is to 0.5 times of its history value.Wherein, the minimum of buffer memory entry-into-force time can be set to 1 second, after each change, the value resetting the currency of the buffer memory entry-into-force time number of times identical with its history value is 0, and the value of the currency resetting the buffer memory entry-into-force time number of times different from its history value is 0.Like this, the impact of domain name mapping result inertia replacing on efficiency can be reduced, accelerate domain name and frequently change the real-time response brought.
Alternatively, the corresponding relation of the IP address that domain name is pointed to and domain name is the corresponding relation without the need to the buffered in advance according to request, wherein, corresponding relation without the need to the buffered in advance according to request is that do not need just can the corresponding relation of buffered in advance according to the inquiry of the domain name request that receives, and DNS needs could the corresponding relation of buffer memory when receiving user input fields name inquiry request to need the corresponding relation of the buffer memory according to request to refer to.Like this, above-mentioned buffer processing device can also comprise: receiving element, the second judging unit and response unit.Receiving element receives the inquiry of the domain name request of user's input after being used for the corresponding relation of IP address and the domain name pointed in buffer memory domain name; Whether the corresponding relation of the IP address that the second judging unit points to for the domain name that the inquiry of the domain name request judging user and input is asked and this domain name satisfies the demand the corresponding relation of according to request buffer memory; Response unit is used for when being judged as YES, and uses and needs the corresponding relation of the buffer memory according to request to reply the inquiry of the domain name request that user inputs; And when being judged as NO, use the corresponding relation without the need to the buffered in advance according to request to reply the inquiry of the domain name request that user inputs.In other words, response unit is when replying the inquiry of the domain name request of user, be according to DNS self buffer memory to need when receiving user input fields name inquiry request could the corresponding relation of buffer memory time, the corresponding relation of preferential use DNS self buffer memory carries out inquiry of the domain name, when the corresponding corresponding relation of the non-buffer memory of DNS self, use and do not need just the corresponding relation of buffered in advance to carry out inquiry of the domain name according to the inquiry of the domain name request that receives.When client sends inquiry of the domain name request, the service regeulations that the domain name analysis system such as DNS are resolved are the buffer memorys preferentially using domain name system self, if the cache lookup of domain name system is less than the caching record of this domain name, then use the buffer memory of this buffer unit, the buffer memory entry-into-force time of acknowledged client end is the above-mentioned buffer memory entry-into-force time received, after acknowledged client end, domain name analysis system needs to continue operation below, as recursion resolution etc.When domain name analysis system also can not find buffer memory at buffer unit, then can continue operation below, as recursion resolution etc., carry out acknowledged client end.
According to embodiments of the invention, provide a kind of method for caching and processing for domain name mapping, this method for caching and processing is used for the corresponding relation of the buffered in advance domain name server ip address corresponding with it.This method for caching and processing for domain name mapping may operate in computer-processing equipment.It should be noted that, the method for caching and processing for domain name mapping that the embodiment of the present invention provides can be performed by the buffer processing device for domain name mapping of the embodiment of the present invention, and the buffer processing device for domain name mapping of the embodiment of the present invention also may be used for the method for caching and processing for domain name mapping performing the embodiment of the present invention.
Fig. 4 is the flow chart of the buffer processing device for domain name mapping according to a first embodiment of the present invention.
As shown in Figure 4, the method comprises following step S101 to step S103:
Step S101, obtains the domain name that inquiry of the domain name request is asked.
In embodiments of the present invention, main frame sends domain name inquiry request to server, and the domain name that dns server sends to server for resolving main frame, directly can obtain the domain name that main frame sends, also can obtain the domain name of resolving through dns server, the domain name herein related to can comprise one or more.It should be noted that, in embodiments of the present invention, the domain name that inquiry of the domain name request is asked can be obtained from the domain name list pre-set, wherein, the domain name of this place request can be stored in the domain name list pre-set according to the time sequencing of request, also can be stored in the domain name list pre-set according to the size order of the frequency of request, and main frame just same domain name repeatedly can send domain name inquiry request to server.Alternatively, the domain name that the low peak period of the Internet acquisition inquiry of the domain name request can be used to ask 3:00 AM user, like this, not only can improve the efficiency obtaining the domain name that inquiry of the domain name request is asked, and the burden of the Internet can be alleviated, obtain domain name that inquiry of the domain name request asks in the time period of avoiding being on duty and cause the Internet to block up.
Step S102, generates the IP address of domain name sensing and the corresponding relation of this domain name.
Wherein, the domain name can asked in inquiry of the domain name request, after the parsing of DNS, generates the IP address of domain name sensing and the corresponding relation of this domain name.It should be noted that, DNS is the abbreviation of domain name system or domain name service, it is a kernel service of internet, it is as a distributed data base that domain name and IP address can be mapped mutually, user can be made to access the Internet more easily, and do not spend the IP string remembeing directly to be read by machine.In addition, DNS is made up of resolver and name server.Name server refers to the domain name and corresponding IP address of preserving All hosts in this network, and has server domain name being converted to IP address function.
Step S103, the corresponding relation of the IP address that buffer memory domain name is pointed to and domain name.
In embodiments of the present invention, buffer unit 30, when the corresponding relation of the IP address that buffer memory domain name is pointed to and this domain name, can carry out buffer memory according to the genesis sequence of corresponding relation, also can carry out buffer memory according to the request frequency of domain name or request number of times.
By the present invention, adopt the domain name obtaining inquiry of the domain name request and ask; Generate the IP address of domain name sensing and the corresponding relation of domain name; And the IP address pointed to of buffer memory domain name and the corresponding relation of domain name, solving in correlation technique can not the problem of corresponding relation of the buffered in advance domain name server ip address corresponding with it, and then reaches the effect of corresponding relation of the buffered in advance domain name server ip address corresponding with it.
Fig. 5 is the flow chart of the buffer processing device for domain name mapping according to a second embodiment of the present invention.
As shown in Figure 5, the method comprises following step S201 to step S205, and this embodiment can as preferred implementation embodiment illustrated in fig. 4.
Step S201 is identical with the step S101 in previous embodiment, does not repeat them here.
Step S202, the request number of times of statistics domain name.
Particularly, in the invention process, one or more counter can be comprised, and the corresponding domain name of each counter, like this, after the domain name that acquisition inquiry of the domain name request is asked, can judge whether counter corresponding to domain name has been triggered and has started counting, if judge that counter corresponding to domain name has been triggered and has started counting, then the counting of counter increases by 1, judge that counter corresponding to domain name is not triggered else if, then flip-flop number makes it start counting.Also can be preset Hash table, the keyword of this preset Hash table is domain name, cryptographic Hash is the request number of times of domain name, wherein, the keyword that different domain names is corresponding different, like this, after the domain name that acquisition inquiry of the domain name request is asked, can judge whether domain name exists in this preset Hash table, if judge that domain name exists in this preset Hash table, then cryptographic Hash increases by 1, judges that domain name does not exist in this preset Hash table else if, then increases the keyword of this domain name and correspondence thereof at this preset Hash table.
Step S203, judges whether the request number of times of domain name is greater than predetermined threshold value.
Step S204, if judge that the request number of times of domain name is greater than predetermined threshold value, then generates the IP address of domain name sensing and the corresponding relation of domain name.
If judge that the request number of times of domain name is not more than predetermined threshold value, then do not generate the IP address of domain name sensing and the corresponding relation of domain name.In the invention process, predetermined threshold value can be arranged according to user's request.Request number of times is more, and the Potential feasibility of user to the access of this domain name is larger, otherwise request number of times is fewer, and the Potential feasibility of user to the access of this domain name is less.Like this, can only to the larger domain name of the Potential feasibility of access with and the corresponding relation of corresponding server ip address carry out buffer memory, saved memory space, improve buffer efficiency.
Step S205 is identical with the step S103 in previous embodiment, does not repeat them here.
Alternatively, the domain name that acquisition inquiry of the domain name request is asked can comprise:
S2, the log information that the local domain name server monitoring operator exports; And
S4, resolves log information, extracts the domain name of request, wherein, extracts domain name according to the sequencing of the time of the domain name of request, or, extract domain name according to the size order of the request number of times of the domain name of request.
It should be noted that, because any netizen user must pass through ISP (Internet ServiceProvider, be called for short ISP) accessing Internet, like this, netizen user needs to visit through ISP the application that domain name provides, dns resolution is then the basic part of the Internet, netizen user accesses the Internet, all need the process through dns resolution, the resolution server that ISP is supplied to user is LDNS server, and visit domain name by ISP and DNS resolves domain name time can output journal information, like this, monitor module and may be used for monitoring the log information of the local domain name server output of operator to obtain the access situation to each domain name, wherein, access situation comprises the access times and access time etc. of domain name.
Extraction module extracts domain name according to the sequencing of the time of the domain name of request, or, extract domain name according to the size order of the request number of times of the domain name of request.Particularly, extraction module can monitor the log information of operator's output to extract the domain name of netizen user's request by resolving monitoring module.
Alternatively, after the request number of times of statistics domain name and the domain name of extraction request, above-mentioned method for caching and processing can also comprise:
S6, the curve chart that the request frequency obtaining each domain name changes with corresponding domain name;
S8, domain name request number of times in curve chart being greater than predetermined threshold value generates domain name list, and wherein, the corresponding relation of the IP address and domain name that generate domain name sensing can comprise:
S12, generates the corresponding relation of each domain name in the IP address and domain name list that domain name points to.
Like this, the corresponding relation by only generating each domain name in domain name list reaches the effect of saving memory space and improving formation efficiency.In addition, the domain name list of generation can store domain name according to the time sequencing of domain name access, also can according to the size of the number of times of domain name request according to ascending or descending sequential storage domain name.
Alternatively, after the IP address of buffer memory domain name sensing and the corresponding relation of domain name, above-mentioned method for caching and processing can also comprise:
S14, whether the corresponding relation of the IP address and domain name of detecting domain name sensing changes;
S16, if detect that the corresponding relation of the IP address that domain name is pointed to and domain name changes, then upgrades the IP address of domain name sensing and the corresponding relation of domain name; And
S18, the corresponding relation of the IP address that the domain name after buffer update is pointed to and domain name.
Also namely, after detecting unit detects that IP address corresponding to domain name changes and updating block upgrades the corresponding relation of domain name in buffer unit and IP, the corresponding relation of the IP address that buffer unit also points to for the domain name after buffer update and domain name.Particularly, buffer unit refers to the domain name analysis system such as DNS, receives and the corresponding relation of buffer memory domain name and IP, and have received the buffer memory entry-into-force time for certain domain name.
During enforcement, need the time message queue pre-setting multiple grade, wherein, these time message queues are that the length of buffer memory entry-into-force time of the corresponding relation of IP address and this domain name pointed to according to domain name carries out grade classification, and the time message queue of different brackets correspond to different time spans, above-mentioned different time message queue can take time value as cycle, periodically nslookup.Particularly, can according to the length of the buffer memory entry-into-force time got, and the time message queue that the buffer memory entry-into-force time of the corresponding domain name got being put into the time span corresponding relation more corresponding than this domain name is short, and then whether the corresponding relation of the IP address and this domain name of detecting domain name sensing changes, and/or whether the IP address detecting domain name sensing changes, when change occurs arbitrarily, need again obtain the buffer memory entry-into-force time and record it, if and the buffer memory entry-into-force time self changes, the buffer memory entry-into-force time after according to change is then needed to be that domain name selects the time message queue of suitable grade to reappose.
Alternatively, while the corresponding relation of the IP address and domain name that generate domain name sensing, above-mentioned method for caching and processing can also comprise:
S20, the buffer memory entry-into-force time of record corresponding relation; And
S22, changes the buffer memory entry-into-force time of having recorded according to user's request.
Like this, intellectuality amendment can be carried out to the buffer memory entry-into-force time.During enforcement, record cell can revise the buffer memory entry-into-force time dynamically.Wherein, while renewal domain name and corresponding relation thereof, whether the currency that record cell can compare the buffer memory entry-into-force time is identical with its history value, and record the currency number of times identical from history value and both different number of times, such as, suppose that the initial value of identical number of times and different number of times is 0.If currency is identical with history value, then both identical record number of times are increased by 1, if currency and history value are not identical, then both different record number of times are reduced 1.Wherein, when both identical record number of times are greater than 10, the increase buffer memory entry-into-force time is to 1.5 times of its history value; When both different record number of times are less than-10, the minimizing buffer memory entry-into-force time is to 0.5 times of its history value.Wherein, the minimum of buffer memory entry-into-force time can be set to 1 second, after each change, the value resetting the currency of the buffer memory entry-into-force time number of times identical with its history value is 0, and the value of the currency resetting the buffer memory entry-into-force time number of times different from its history value is 0.Like this, the impact of domain name mapping result inertia replacing on efficiency can be reduced, accelerate domain name and frequently change the real-time response brought.
Alternatively, the corresponding relation of the IP address that domain name is pointed to and domain name is the corresponding relation without the need to the buffered in advance according to request, and after the IP address of buffer memory domain name sensing and the corresponding relation of domain name, above-mentioned method for caching and processing can also comprise:
S24, receives the inquiry of the domain name request of user's input;
S26, judges whether the corresponding relation of the IP address that the domain name that the inquiry of the domain name request that user inputs asks is pointed to and this domain name satisfies the demand the corresponding relation of according to request buffer memory;
S28, if so, then uses and needs the corresponding relation of the buffer memory according to request to reply the inquiry of the domain name request that user inputs; And
S30, if not, then uses the corresponding relation without the need to the buffered in advance according to request to reply the inquiry of the domain name request that user inputs.
In other words, response unit is when replying the inquiry of the domain name request of user, be according to DNS self buffer memory to need when receiving user input fields name inquiry request could the corresponding relation of buffer memory time, the corresponding relation of preferential use DNS self buffer memory carries out inquiry of the domain name, when the corresponding corresponding relation of the non-buffer memory of DNS self, use and do not need just the corresponding relation of buffered in advance to carry out inquiry of the domain name according to the inquiry of the domain name request that receives.When client sends inquiry of the domain name request, the service regeulations that the domain name analysis system such as DNS are resolved are the buffer memorys preferentially using domain name system self, if the cache lookup of domain name system is less than the caching record of this domain name, then use the buffer memory of this buffer unit, the buffer memory entry-into-force time of acknowledged client end is the above-mentioned buffer memory entry-into-force time received, after acknowledged client end, domain name analysis system needs to continue operation below, as recursion resolution etc.When domain name analysis system also can not find buffer memory at buffer unit, then can continue operation below, as recursion resolution etc., carry out acknowledged client end.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
In several embodiments that the application provides, should be understood that, disclosed device, the mode by other realizes.Such as, device embodiment described above is only schematic, the such as division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. for a method for caching and processing for domain name mapping, it is characterized in that, comprising:
Obtain the domain name that inquiry of the domain name request is asked;
Generate the IP address of domain name sensing and the corresponding relation of domain name; And
The corresponding relation of the IP address that buffer memory domain name points to and domain name.
2. method for caching and processing according to claim 1, is characterized in that, after the domain name that acquisition inquiry of the domain name request is asked, described method for caching and processing also comprises:
The request number of times of statistics domain name; And
Judge whether the request number of times of domain name is greater than predetermined threshold value,
Wherein, if judge that the request number of times of domain name is greater than described predetermined threshold value, then generate the IP address of domain name sensing and the corresponding relation of domain name, if judge that the request number of times of domain name is not more than described predetermined threshold value, then do not generate the IP address of domain name sensing and the corresponding relation of domain name.
3. method for caching and processing according to claim 2, is characterized in that, the domain name that acquisition inquiry of the domain name request is asked comprises:
The log information that the local domain name server monitoring operator exports; And
Resolve described log information, extract the domain name of described request,
Wherein, extract domain name according to the sequencing of the time of the domain name of request, or, extract domain name according to the size order of the request number of times of the domain name of request.
4. method for caching and processing according to claim 3, is characterized in that,
After the request number of times of statistics domain name and the domain name of extraction described request, described method for caching and processing also comprises: the curve chart that the request frequency obtaining each domain name changes with corresponding domain name; Domain name request number of times described in described curve chart being greater than described predetermined threshold value generates domain name list,
Wherein, IP address that domain name points to is generated and the corresponding relation of domain name comprises: the corresponding relation generating each domain name in the IP address and domain name list that domain name points to.
5. method for caching and processing according to claim 1, is characterized in that, after the IP address of buffer memory domain name sensing and the corresponding relation of domain name, described method for caching and processing also comprises:
Whether the corresponding relation of the IP address and domain name of detecting domain name sensing changes;
If detect that the corresponding relation of the IP address that domain name points to and domain name changes, then upgrade the IP address of domain name sensing and the corresponding relation of domain name; And
The corresponding relation of the IP address that the domain name after buffer update points to and domain name.
6. method for caching and processing according to claim 1, is characterized in that, while the corresponding relation of the IP address and domain name that generate domain name sensing, described method for caching and processing also comprises:
Record the buffer memory entry-into-force time of described corresponding relation; And
The buffer memory entry-into-force time of having recorded is changed according to user's request.
7. method for caching and processing according to claim 1, it is characterized in that, the corresponding relation of the IP address that domain name points to and domain name is the corresponding relation without the need to the buffered in advance according to request, after the IP address of buffer memory domain name sensing and the corresponding relation of domain name, described method for caching and processing also comprises:
Receive the inquiry of the domain name request of user's input;
Judge whether the corresponding relation of the IP address that the domain name that the inquiry of the domain name request that described user inputs asks is pointed to and this domain name satisfies the demand the corresponding relation of according to request buffer memory;
If so, the corresponding relation of described needs buffer memory according to request is then used to reply the inquiry of the domain name request that described user inputs; And
If not, then without the need to the corresponding relation of the buffered in advance according to request, the inquiry of the domain name request that described user inputs is replied described in use.
8. for a buffer processing device for domain name mapping, it is characterized in that, comprising:
First acquiring unit, for obtaining the domain name that inquiry of the domain name request is asked;
First generation unit, for generating the IP address and the corresponding relation of domain name that domain name points to; And
Buffer unit, the IP address pointed to for buffer memory domain name and the corresponding relation of domain name.
9. buffer processing device according to claim 8, is characterized in that, described buffer processing device also comprises:
Statistic unit, for after obtaining the domain name that inquiry of the domain name request asks, the request number of times of statistics domain name; And
First judging unit, for judging whether the request number of times of domain name is greater than predetermined threshold value,
Wherein, described first generation unit is used for when judging that the request number of times of domain name is greater than described predetermined threshold value, generate the IP address of domain name sensing and the corresponding relation of domain name, when judging that the request number of times of domain name is not more than described predetermined threshold value, do not generate the IP address of domain name sensing and the corresponding relation of domain name.
10. buffer processing device according to claim 9, is characterized in that, described first acquiring unit comprises:
Monitor module, the log information that the local domain name server for monitoring operator exports; And
Extraction module, for resolving described log information, extracts the domain name of described request, and wherein, the sequencing that described extraction module is used for the time of the domain name according to request extracts domain name, or, extract domain name according to the size order of the request number of times of the domain name of request.
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Application publication date: 20150923 |