CN106612339A - Domain name updating method, system and main DNS (Domain Name System) server - Google Patents
Domain name updating method, system and main DNS (Domain Name System) server Download PDFInfo
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- CN106612339A CN106612339A CN201510705580.9A CN201510705580A CN106612339A CN 106612339 A CN106612339 A CN 106612339A CN 201510705580 A CN201510705580 A CN 201510705580A CN 106612339 A CN106612339 A CN 106612339A
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- dns server
- domain name
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- caching record
- primary dns
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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
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/58—Caching of addresses or names
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a domain name updating method, a system and a main DNS (Domain Name System) server. The method comprises steps: the main DNS server sends a domain name query request to an authoritative DNS server; the main DNS server receives a domain name query result sent by the authoritative DNS server, and a locally-saved domain name buffer record is updated according to the domain name query result; and the main DNS server synchronizes the updated domain name buffer record to each slave DNS server to enable each slave DNS server to update the locally-saved domain name buffer record. Through arranging the main DNS server and the slave DNS servers, the main DNS server is in charge of domain name updating, the updated domain name buffer record is synchronized to each slave DNS server, the request times from the DNS service node to the authoritative DNS node can be reduced, the resource consumption and extranet flow can be reduced, and the system updating efficiency is improved.
Description
Technical field
The present invention relates to computer network field, especially a kind of domain name update method, system and
Main DNS (Domain Name System, domain name analysis system) server.
Background technology
DNS systems are a rings important in network, and user needs the domain name mapping by DNS,
Corresponding IP (Internet protocol) addresses could be obtained and website is conducted interviews.Therefore,
Domain name caching record in dns server needs rapidly to carry out response to user's request.
Every domain name caching record of dns server storage all has effective time (TTL, time to
live).For the analysis request that user side sends, in effective time, dns server can
Directly to return analysis result to user side according to local domain name caching record.
At present, because some popular domain name access amounts are very big, part dns server 12 is adopted
The technology for actively updating, i.e., actively to authoritative DNS service before effective time will expire
Device 14 is initiated inquiry of the domain name and updates caching.But, it is separate unit DNS that these update operation
The behavior of server 12, as shown in Figure 1.With the increase of capacity expansion and number of servers,
It is likely to occur in the short time and more news is repeatedly asked to same domain name, it is impossible to effectively improves whole
The renewal efficiency of individual DNS service node, and increased the pressure of server and network.
The content of the invention
An embodiment of the present invention technical problem to be solved is：How DNS service node is improved
Renewal efficiency.
A kind of one side according to embodiments of the present invention, there is provided domain name update method, including：
Primary dns server to Authoritative DNS server sends domain name inquiry request；Primary dns server
The inquiry of the domain name result that Authoritative DNS server sends is received, and is updated according to inquiry of the domain name result
The local domain name caching record for preserving；The domain name caching record synchronization that primary dns server will update
To each from dns server, so that each updates the local domain name for preserving from dns server
Caching record.
In one embodiment, primary dns server sends domain name and looks into Authoritative DNS server
Asking request includes：Primary dns server delays according to the effective time of domain name caching record in domain name
Deposit to record expired forward direction Authoritative DNS server and send the corresponding domain name of domain name caching record and look into
Ask request.
In one embodiment, primary dns server sends domain name and looks into Authoritative DNS server
Asking request includes：Primary dns server is when the effective time of domain name caching record is less than preset value
Actively send the corresponding inquiry of the domain name request of domain name caching record to Authoritative DNS server.
In one embodiment, method also includes：Primary dns server is regularly to standby main DNS
Server sends existence message, so that standby primary dns server fails to receive in Preset Time
Primary dns server is converted to during the existence message that primary dns server sends.
In one embodiment, method also includes：According to the ability information of dns server, from
A dns server is elected in each dns server in domain name node as main DNS
Server.
A kind of second aspect according to embodiments of the present invention, there is provided primary dns server, including：
Request module, for sending domain name inquiry request to Authoritative DNS server；Receiver module, uses
In the inquiry of the domain name result for receiving Authoritative DNS server transmission；Update module, for according to domain
Name Query Result updates the local domain name caching record for preserving；Synchronized transmission module, for will more
New domain name caching record is synchronized to each from dns server, so that each is from DNS service
Device updates the local domain name caching record for preserving.
In one embodiment, request module is used for the effective time according to domain name caching record,
Domain name caching record correspondence is sent in the expired forward direction Authoritative DNS server of domain name caching record
Inquiry of the domain name request.
In one embodiment, request module is used to be less than in the effective time of domain name caching record
Actively to the corresponding inquiry of the domain name of Authoritative DNS server transmission domain name caching record during preset value
Request.
In one embodiment, server also include existence message sending module, for timing to
Standby primary dns server sends existence message, so that standby primary dns server is when default
It is interior to fail to be converted to primary dns server when receiving the existence message of primary dns server transmission.
A kind of 3rd aspect according to embodiments of the present invention, there is provided domain name more new system, including：
Aforementioned any one primary dns server and from dns server, is used to connect from dns server
The domain name caching record of the renewal that primary dns server sends is received, and updates the local domain name for preserving
Caching record.
In one embodiment, system also includes standby primary dns server, for receiving master
The existence message that dns server timing sends, fails to receive main DNS clothes in Preset Time
Primary dns server is converted to during the existence message that business device sends.
The present invention passes through to arrange primary dns server and from dns server, by primary dns server
Responsible domain name updates, and the domain name caching record of renewal is synchronized to into each from dns server,
DNS service node is reduced to the request number of times of authoritative DNS nodes, resource consumption is reduced
With outer net flow, the renewal efficiency of system is improve.
By referring to the drawings to the detailed description of exemplary embodiment of the invention, the present invention
Further feature and its advantage will be made apparent from.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it is clear that
Ground, drawings in the following description are only some embodiments of the present invention, for the common skill in this area
For art personnel, on the premise of not paying creative work, can be with according to these accompanying drawings acquisitions
Other accompanying drawings.
Fig. 1 illustrates the schematic diagram of domain name update method in prior art.
Fig. 2 illustrates the flow chart of one embodiment of domain name update method of the present invention.
Fig. 3 illustrates the flow chart of another embodiment of domain name update method of the present invention.
Fig. 4 illustrates that standby primary dns server of the invention becomes the reality of primary dns server method
Apply the flow chart of example.
Fig. 5 illustrates the structure chart of one embodiment of domain name of the present invention more new system.
Fig. 6 illustrates the structure chart of one embodiment of primary dns server of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only that a present invention part is real
Apply example, rather than the embodiment of whole.Below to the description reality of at least one exemplary embodiment
It is merely illustrative on border, never as to the present invention and its application or any restriction for using.
Based on the embodiment in the present invention, those of ordinary skill in the art are not before creative work is made
The every other embodiment for being obtained is put, the scope of protection of the invention is belonged to.
In order to reduce DNS service node to the request number of times of authoritative DNS nodes, the present invention sets
Primary dns server is put and from dns server, only from primary dns server to authoritative DNS
Server initiates domain name inquiry request, then Query Result is synchronized to into each from DNS service
Device.The domain name update method of one embodiment of the invention is described below with reference to Fig. 2.
Fig. 2 is the flow chart of one embodiment of domain name update method of the present invention.As shown in Fig. 2
The method of the embodiment includes：
Step S202, primary dns server to Authoritative DNS server sends domain name inquiry request.
Wherein, Authoritative DNS server can for ICP (Internet Content Provider, because
Te Wang content suppliers) authoritative server.
Step S204, primary dns server receives the inquiry of the domain name that Authoritative DNS server sends
As a result, and according to inquiry of the domain name result update the local domain name caching record for preserving.
Step S206, primary dns server by the domain name caching record of renewal be synchronized to each from
Dns server, so that each updates the local domain name caching record for preserving from dns server.
By arranging primary dns server and from dns server, by primary dns server domain being responsible for
Name updates, and the domain name caching record of renewal is synchronized to into each from dns server, reduces
DNS service node reduces resource consumption and outer net to the request number of times of authoritative DNS nodes
Flow, improves the renewal efficiency of system.
Part domain name is more popular, and request number of times is more, it is therefore necessary to which Jing often updates popular domain
The analysis result of name, makes the long-term caching record with popular domain name in dns server, to subtract
Waiting time of few user when domain name mapping is asked.Therefore, it can take and make main DNS service
The method that device carries out active renewal before domain name caching record is expired.For example, step S202 is concrete
Can be：Primary dns server is remembered according to the effective time of domain name caching record in domain name caching
The expired forward direction Authoritative DNS server of record sends the corresponding inquiry of the domain name of domain name caching record please
Ask.By in this way, it can be ensured that domain name caching record remains at effective time
It is interior, improve the efficiency and reliability of user's inquiry.
On the basis of primary dns server carries out active renewal in effective time, Ke Yijin
One step sets the time that request is sent to DNS authority server.For example, step S202 is also
Can be：Primary dns server master when the effective time of domain name caching record is less than preset value
Trend Authoritative DNS server sends the corresponding inquiry of the domain name request of domain name caching record.Below
Being described in setting time with reference to Fig. 3 carries out domain name update method.
Fig. 3 is the flow chart of another embodiment of domain name update method of the present invention.As shown in figure 3,
The method of the embodiment includes：
Step S300, setting triggering primary dns server actively carries out the Preset Time of domain name renewal.
Step S302, primary dns server monitors the effective time of domain name caching record.
Step S304, when active between less than Preset Time when, primary dns server is to authoritative DNS
Server sends the inquiry request of domain name.
Step S306, Authoritative DNS server inquires the corresponding IP address of domain name, and should
Inquiry of the domain name result is sent to primary dns server.
Step S308, primary dns server receives the inquiry of the domain name that Authoritative DNS server sends
As a result, and according to inquiry of the domain name result update local domain name caching record, i.e. will locally protect
The corresponding IP address of domain name deposited is updated.
Step S310, primary dns server by the domain name caching record of renewal send to each from
Dns server.
Step S312, each is from dns server by the corresponding IP ground of local domain name for preserving
Location is updated.
Specifically, by taking the inquiry of the domain name of www.189.cn as an example, preset primary dns server and send out
The Preset Time for sending request is 5 minutes.First, primary dns server monitors www.189.cn's
The effective time of domain name caching record, when active between less than 5 minutes when, primary dns server to
Authoritative DNS server sends the inquiry request of www.189.cn；Then, primary dns server connects
Receive the inquiry of the domain name result that Authoritative DNS server sends, and the www.189.cn that will locally preserve
The corresponding IP address of domain name be updated to the 180.97.214.205 inquired from Authoritative DNS server；
Finally, primary dns server sends the domain name caching record of renewal to each from dns server,
Each updates the corresponding IP address of domain name of the local www.189.cn for preserving from dns server
For 180.97.214.205.
By, ensureing to preserve newest domain in dns server all the time in this way
Name information, can be adjusted flexibly the time point for carrying out caching record renewal, to adapt to different demands again.
In the synchronizing process of above-mentioned each embodiment, specifically, for example, can adopt with lower section
Method：Primary dns server is cached the domain name for updating by the sending module in data syn-chronization program
Record is sent to each from dns server, from dns server by data syn-chronization program
Receiver module receive the domain name caching record for updating, and update home domain name data base.Pass through
Corresponding receiving and dispatching mechanism in data syn-chronization program, can be readily achieved primary dns server and from
Synchronizing process between dns server.
Additionally, primary dns server can be automatically generated by way of election.For example, according to
The ability information of dns server, elects in each dns server from domain name node
One dns server is used as primary dns server.Ability information can be dns server
The information such as hardware configuration, computation rate, memory space.Due to primary dns server and from DNS
Server is required to provide the user domain name resolution service, additionally, primary dns server is also needed to
The work that domain name updates and domain name is synchronous is carried out, be therefore, it can the stronger DNS of integration capability
Server is many using needs to adapt to as primary dns server.
In order to improve reliability when system is used, a standby main DNS service can be set
Device, when primary dns server breaks down, standby primary dns server DNS into based on
Server.It is for instance possible to use whether following methods detection primary dns server breaks down：
Primary dns server timing to standby primary dns server sends existence message, standby main DNS
If server can in time receive existence message in Preset Time, primary dns server is illustrated
In normal work, if standby primary dns server fails to receive main DNS in Preset Time
During the existence message that server sends, illustrate primary dns server may failure, now,
Standby primary dns server is converted to primary dns server.By in this way, can be with
When primary dns server breaks down, system can also maintain normal operating.Join below
Examine Fig. 4 and describe the method that standby primary dns server becomes primary dns server.
Fig. 4 is the embodiment that standby primary dns server of the invention becomes primary dns server method
Flow chart.As shown in figure 4, the method for the embodiment includes：
Step S402, arranges existence message and sends the time.
Wherein, the transmission time can be periodic, i.e., send out after one section of regular time
Deliver newspaper text, or timing, i.e., send message in some specific time points.
Step S404, primary dns server sends the time to standby according to the existence message for arranging
Primary dns server sends existence message.
Existence message is monitored and received to step S406, standby primary dns server.
Step S408, when standby primary dns server does not receive existence within the time for arranging
Message, then standby primary dns server becomes new primary dns server, and performs main DNS
The function of server, for example, execution step S204～S206.
Wherein, standby primary dns server can send change message to from dns server,
The information such as device address of standby primary dns server can be included in message, so as to from DNS
Server learns that primary dns server has been carried out changing.It is obvious also possible to not to from DNS
Server notified, direct execution step S204～S206, as long as can from dns server
Synchronization message to receiving is responded and updated, you can maintain remaining in operation for system.
By the reliability in this way, improving system, going out primary dns server
After existing failure, whole system still can be with normal work.
Wherein, standby primary dns server can be one from dns server, also may be used
Think other dns servers.The ability of alternative DNS server should also be as relatively by force, so as to
After it becomes primary dns server, corresponding work can be born.
The domain name more new system of one embodiment of the invention is described below with reference to Fig. 5.
Fig. 5 is the structure chart of one embodiment of domain name of the present invention more new system.As shown in figure 5,
The system includes：Primary dns server 52 and from dns server 54, from dns server
54 are used to receive the domain name caching record of the renewal that primary dns server 52 sends, and update this
The domain name caching record that ground is preserved.
System can also include standby primary dns server, determine for receiving primary dns server
When the existence message that sends, the existence for receiving primary dns server transmission is failed in Preset Time
Primary dns server is converted to during message.
The primary dns server of one embodiment of the invention is described below with reference to Fig. 6.
Fig. 6 is the structure chart of one embodiment of primary dns server of the present invention.As shown in fig. 6,
Primary dns server includes：Request module 622, for Authoritative DNS server sending domain
Name inquiry request；Receiver module 624, the domain name for receiving Authoritative DNS server transmission is looked into
Ask result；Update module 626, for updating the local domain name for preserving according to inquiry of the domain name result
Caching record；Synchronized transmission module 628, for the domain name caching record of renewal to be synchronized to respectively
It is individual from dns server, so that each updates the local domain name caching for preserving from dns server
Record.
Wherein, request module 622 is used for the effective time according to domain name caching record, in domain name
The expired forward direction Authoritative DNS server of caching record sends the corresponding domain name of domain name caching record
Inquiry request.
Request module 622 can be also used for being less than preset value in the effective time of domain name caching record
When actively send the corresponding inquiry of the domain name request of domain name caching record to Authoritative DNS server.
Server can also include existence message sending module, for timing to standby main DNS
Server sends existence message, so that standby primary dns server fails to receive in Preset Time
Primary dns server is converted to during the existence message that primary dns server sends.
Additionally, the method according to the invention is also implemented as a kind of computer program, should
Computer program includes computer-readable medium, is stored with the computer-readable medium
The computer program of the above-mentioned functions limited in for performing the method for the present invention.Art technology
Personnel will also understand is that, the various illustrative logical blocks with reference to described by disclosure herein, mould
Block, circuit and algorithm steps may be implemented as the group of electronic hardware, computer software or both
Close.
Presently preferred embodiments of the present invention is the foregoing is only, it is all at this not to limit the present invention
Within the spirit and principle of invention, any modification, equivalent substitution and improvements made etc. all should be wrapped
It is contained within protection scope of the present invention.
Claims (11)
1. a kind of domain name update method, including：
Primary dns server to Authoritative DNS server sends domain name inquiry request；
Primary dns server receives the inquiry of the domain name result that Authoritative DNS server sends, and root
The local domain name caching record for preserving is updated according to inquiry of the domain name result；
The domain name caching record of renewal is synchronized to each from dns server by primary dns server,
So that each updates the local domain name caching record for preserving from dns server.
2. method according to claim 1, it is characterised in that primary dns server to
Authoritative DNS server sends domain name inquiry request to be included：
Primary dns server according to the effective time of domain name caching record, in domain name caching record mistake
The forward direction Authoritative DNS server of phase sends the corresponding inquiry of the domain name request of domain name caching record.
3. method according to claim 1, it is characterised in that primary dns server to
Authoritative DNS server sends domain name inquiry request to be included：
Primary dns server when the effective time of domain name caching record is less than preset value actively to
Authoritative DNS server sends the corresponding inquiry of the domain name request of domain name caching record.
4. method according to claim 1, it is characterised in that also include：
Primary dns server timing to standby primary dns server sends existence message, so as to standby
Fail the existence report for receiving primary dns server transmission in Preset Time with primary dns server
Primary dns server is converted to when literary.
5. method according to claim 1, it is characterised in that also include：
According to the ability information of dns server, each dns server from domain name node
In elect a dns server as primary dns server.
6. a kind of primary dns server, including：
Request module, for sending domain name inquiry request to Authoritative DNS server；
Receiver module, for receiving the inquiry of the domain name result of Authoritative DNS server transmission；
Update module, for updating the local domain name caching record for preserving according to inquiry of the domain name result；
Synchronized transmission module, for the domain name caching record of renewal to be synchronized to into each from DNS
Server, so that each updates the local domain name caching record for preserving from dns server.
7. server according to claim 6, it is characterised in that the request module
For according to the effective time of domain name caching record, in the forward direction authority that domain name caching record is expired
Dns server sends the corresponding inquiry of the domain name request of domain name caching record.
8. server according to claim 6, it is characterised in that the request module
For the active when the effective time of domain name caching record is less than preset value to authoritative DNS service
Device sends the corresponding inquiry of the domain name request of domain name caching record.
9. server according to claim 6, it is characterised in that also including existence report
Literary sending module, sends existence message, so as to standby for timing to standby primary dns server
Primary dns server fails the existence message for receiving primary dns server transmission in Preset Time
When be converted to primary dns server.
10. a kind of domain name more new system, including：
Primary dns server any one of claim 6-9,
With from dns server, for receiving the domain name of the renewal of primary dns server transmission
Caching record, and update the local domain name caching record for preserving.
11. systems according to claim 10, it is characterised in that also including standby master
Dns server, for receiving the existence message that primary dns server timing sends, default
DNS service based on conversion when failing to receive the existence message of primary dns server transmission in the time
Device.
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| CN109347805A (en) * | 2018-09-19 | 2019-02-15 | 杭州安恒信息技术股份有限公司 | It is a kind of based on DNS without echo SQL injection detection method |
| CN109547585A (en) * | 2019-01-14 | 2019-03-29 | 中国雄安集团数字城市科技有限公司 | A method of based on being switched fast for edge calculations cloud |
| CN110324347A (en) * | 2019-07-08 | 2019-10-11 | 秒针信息技术有限公司 | A kind of information integrating method, device and electronic equipment |
| CN110417935A (en) * | 2019-09-05 | 2019-11-05 | 上海地面通信息网络股份有限公司 | A kind of reverse domain name analysis method based on IPv6 technology |
| CN111182059A (en) * | 2019-12-30 | 2020-05-19 | 互联网域名系统北京市工程研究中心有限公司 | Query analysis method for domain name cache updating |
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| CN113301173A (en) * | 2020-06-09 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Domain name updating system and method, message forwarding method and server |
| CN115250265A (en) * | 2022-08-15 | 2022-10-28 | 中国联合网络通信集团有限公司 | Domain name system DNS data synchronization method and device and domain name system |
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