CN114513487A - Method and device for accelerating domain name resolution, electronic equipment and computer readable storage medium - Google Patents
Method and device for accelerating domain name resolution, electronic equipment and computer readable storage medium Download PDFInfo
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Abstract
A method, a device, an electronic device and a computer-readable storage medium for accelerating domain name resolution are provided, wherein the method comprises the following steps: a user terminal sends domain name resolution requests to a domain name server and a domain name scheduling service respectively; judging whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name is successful within preset time; if yes, randomly selecting a first IP address from the IP list corresponding to the domain name returned from the user terminal and using the first IP address to access the resource corresponding to the domain name; if not, accessing the resources corresponding to the domain name by using the BGP server address preset on the user terminal. The method and the device can realize domain name resolution with controllable time overhead and controllable resolution result; the client request can be processed through the uniform load of a plurality of servers at the server side, so that the overload fault of a single machine is avoided; the user side can access the service node with the minimum delay and the optimal network, and the service loading time of the client is reduced.
Description
Technical Field
The invention belongs to the technical field of internet services, and particularly relates to a method and a device for accelerating domain name resolution, electronic equipment and a computer-readable storage medium.
Background
In the internet world, a domain name is a symbolic alias given by an international agency to a collection of computers (servers) on a network that is easy for a user to remember, and this group of computers may be located in one or more geographical locations and often can provide similar services, while a particular or partial downtime of a computer in the group does not affect other computers to continue to provide services to the user in the identity of the domain name.
The process of accessing domain name to obtain service by various terminals (or computers, hereinafter referred to as terminals) of a user accessing the internet is as follows: (1) aiming at a domain name to be accessed, a terminal sends a domain name query message to a domain name server and waits for the response of the domain name server;
(2) if the terminal successfully obtains the response message of the domain name server within the preset time, the terminal analyzes the message content, if the message content analysis has an effective IP Address (Internet Address, usually one or more than one IP Address) of the domain name, the terminal initiates network connection to the server represented by the IP Address based on the obtained IP Address, and the terminal sends a service request and obtains the response message of the server to be displayed to the user in various user-friendly modes;
(3) if the terminal does not receive the response message of the domain name server within the preset time or the response message does not resolve to the effective IP address, the terminal displays prompting messages such as access failure (retry later and the like) and the like to the user.
The domain name resolution generally uses a standard DNS query packet (UDP port53), but due to unreliable UDP packet transmission process, congestion of a domain name server or delayed response, a domain name resolution process fails, and a user finally fails to access a desired service.
With the rapid development of the internet, the network bandwidth and the server resources are abundant, the probability of the problems can be reduced by means of repeated retry, waiting time extension and the like, and the situation of domain name resolution failure cannot be completely avoided. The pursuit of real-time property in the live broadcast field forces the domain name resolution process to be completed in real time, but the above method based on more time-consuming and repeated retries is not suitable for the live broadcast field.
Disclosure of Invention
In view of the above, the present invention provides a method, apparatus, electronic device and computer-readable storage medium for accelerating domain name resolution that overcomes or at least partially solves the above problems.
In order to solve the technical problem, the invention provides a method for accelerating domain name resolution, which comprises the following steps:
a user terminal sends domain name resolution requests to a domain name server and a domain name scheduling service respectively;
judging whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name is successful within preset time;
if yes, randomly selecting a first IP address from the IP list corresponding to the domain name returned from the user terminal and using the first IP address to access the resource corresponding to the domain name;
if not, accessing the resources corresponding to the domain name by using the BGP server address preset on the user terminal;
judging whether the domain name scheduling service successfully resolves the domain name within preset time;
if yes, caching the IP list corresponding to the domain name to obtain a domain name cache IP list corresponding to the domain name;
judging whether the domain name cache IP table corresponding to the domain name is obtained or not;
and if so, accessing the resource corresponding to the domain name by using the second IP address in the domain name cache IP table.
Preferably, before sending the domain name resolution request to the domain name server and the domain name scheduling service respectively, the method further comprises the steps of:
presetting a message format for domain name resolution service between the user terminal and the domain name server;
constructing a domain name scheduling database through the domain name scheduling service;
presetting a domain name scheduling and analyzing module on the user terminal;
and presetting a BGP server address on the user terminal.
Preferably, the presetting of the message format for the domain name resolution service between the user terminal and the domain name server includes the steps of:
presetting the message type of a domain name query service initiated by the user terminal to the domain name server;
presetting the message type of a domain name response service returned to the user terminal by the domain name server;
presetting the message type of a retry-later service returned to the user terminal by the domain name server;
presetting the message type of the analysis error service returned to the user terminal by the domain name server;
and presetting the maximum validity period of the domain name scheduling result returned to the user terminal by the domain name server.
Preferably, the constructing a domain name scheduling database by the domain name scheduling service includes the steps of:
the domain name scheduling service periodically counts the load of each server;
the domain name scheduling service periodically counts the service type with the strongest bearing capacity of each server;
the domain name scheduling service periodically counts operators where the servers are located;
the domain name scheduling service periodically counts the geographic position of each server;
and forming the domain name scheduling database according to the load, the service type, the operator and the geographic position corresponding to each server.
Preferably, the resolving the domain name by the domain name scheduling service includes the steps of:
acquiring a domain name scheduling and analyzing module preset on the user terminal;
acquiring a preset message format used for domain name resolution service between the user terminal and the domain name server;
the domain name scheduling and resolving module sends the domain name resolving request to the domain name scheduling service in a preset message format;
the domain name scheduling analysis module provides a domain name scheduling API interface with the maximum validity period of a domain name scheduling result to the domain name scheduling service;
judging whether the domain name scheduling service successfully receives the IP list corresponding to the domain name;
and if so, the domain name scheduling service returns the IP list to the user terminal through the domain name scheduling API interface.
Preferably, the step of returning the IP list to the user terminal by the domain name scheduling service through the domain name scheduling API interface includes the steps of:
the domain name scheduling service receives the domain name resolution request sent by the user terminal;
the domain name scheduling service analyzes the domain name scheduling service according to a preset message format to obtain a response field;
the domain name scheduling service searches an IP set of L servers which are qualified for the service type corresponding to the service type field from a domain name scheduling database according to the service type field to obtain an alternative IP set L;
the domain name scheduling service retrieves the operator and the geographic information of the user terminal from an IP database according to the IP of the user terminal, and selects an IP set of M servers which are positioned in the same operator as the IP of the user terminal from the alternative IP set L to obtain an alternative IP set M;
the domain name scheduling service selects an IP set of N servers which are positioned in the same province as the user terminal from the alternative IP set M to obtain an alternative IP set N;
judging whether the alternative IP set N is not empty;
if yes, returning the alternative IP set N to the user terminal in the preset message format;
if not, judging whether the alternative IP set M is not empty;
if yes, returning the alternative IP set M to the user terminal in the preset message format;
if not, judging whether the alternative IP set L is not empty;
if yes, returning the alternative IP set L to the user terminal in the preset message format;
if not, the domain name scheduling service returns a message for analyzing the error service type to the user terminal.
Preferably, the step of the domain name scheduling service returning the IP list to the user terminal through the domain name scheduling API interface further includes the steps of:
judging whether to access the domain name and the IP list corresponding to the domain name before the maximum effective period of the domain name scheduling result is reached;
if yes, calling the domain name scheduling and analyzing module to analyze the domain name to obtain a new IP list, and replacing the expired IP list with the new IP list;
and if not, deleting the domain name and the IP list corresponding to the domain name.
The invention also provides a device for accelerating domain name resolution, which comprises:
the domain name resolution request sending module is used for sending domain name resolution requests to a domain name server and a domain name scheduling service respectively by the user terminal;
the judging module is used for judging whether any one of the domain name server analysis domain name and the domain name scheduling service analysis domain name is successful within preset time, judging whether the domain name scheduling service successfully analyzes the domain name within preset time, and judging whether the domain name cache IP table corresponding to the domain name is obtained;
the execution module is used for executing preset operation according to the judgment result of the judgment module;
when the judging module judges whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds within a preset time, the executing module randomly selects a first IP address from an IP list corresponding to the domain name returned by the user terminal and uses the first IP address to access the resource corresponding to the domain name; when the judging module judges whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds in a preset time, the executing module accesses the resource corresponding to the domain name by using a BGP server address preset on the user terminal; when the judging module judges whether the domain name scheduling service successfully resolves the domain name within the preset time, the executing module caches the IP list corresponding to the domain name to obtain a domain name cache IP table corresponding to the domain name; and when the judging module judges whether the result of obtaining the domain name cache IP table corresponding to the domain name is yes, the executing module uses a second IP address in the domain name cache IP table to access the resource corresponding to the domain name.
The present invention also provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of accelerating domain name resolution as described in any one of the above.
The present invention also provides a computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, is capable of implementing the method for accelerating domain name resolution as set forth in any one of the above.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
the method, the device, the electronic equipment and the computer readable storage medium for accelerating domain name resolution can realize domain name resolution with controllable time overhead and controllable resolution result; the client request can be processed through the uniform load of a plurality of servers at the server side, so that the overload fault of a single machine is avoided; the user side can access the service node with the minimum delay and the best network, the service loading time of the client is reduced, the jamming is eliminated, and the user experience is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for accelerating domain name resolution according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an apparatus for accelerating domain name resolution according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an electronic device provided by an embodiment of the invention;
fig. 4 is a schematic diagram of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that these specific embodiments and examples are for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
As shown in fig. 1, in the embodiment of the present application, the present invention provides a method for accelerating domain name resolution, where the method includes the steps of:
s1: a user terminal sends domain name resolution requests to a domain name server and a domain name scheduling service respectively;
s2: judging whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name is successful within preset time;
s3: if yes, randomly selecting a first IP address from the IP list corresponding to the domain name returned from the user terminal and using the first IP address to access the resource corresponding to the domain name;
s4: if not, accessing the resources corresponding to the domain name by using the BGP server address preset on the user terminal;
s5: judging whether the domain name scheduling service successfully resolves the domain name within preset time;
s6: if yes, caching the IP list corresponding to the domain name to obtain a domain name cache IP list corresponding to the domain name;
s7: judging whether the domain name cache IP table corresponding to the domain name is obtained or not;
s8: and if so, accessing the resource corresponding to the domain name by using the second IP address in the domain name cache IP table.
A method for accelerating domain name resolution provided by the present application is described in detail below with specific embodiments.
When a live application program on a user terminal needs to perform domain name resolution, the live application program sends domain name resolution requests to a domain name server and a domain name scheduling service respectively through the user terminal, and the user terminal periodically judges whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name is successful within preset time (such as 500 ms); if any one of the domain name server and the domain name scheduling service resolving domain name is successful within the preset time, the live broadcast application program randomly selects a first IP address from an IP list corresponding to the domain name returned by the user terminal and uses the first IP address to access the resource corresponding to the domain name, so that the live broadcast application resource can be obtained; and if the domain name server and the domain name scheduling service do not successfully resolve the domain name within the preset time, the live broadcast application program accesses the resource corresponding to the domain name by using the BGP server address preset on the user terminal, so that the live broadcast application resource can be obtained.
In the method for accelerating domain name resolution, a domain name resolution process uses three levels of reinforcement logics of a domain name server, a domain name scheduling service and a BGP server address built in a user terminal, so that the rapid completion and success of the domain name resolution process on the user terminal are ensured; when the live broadcast application program does not obtain the IP address returned by the domain name server and the IP address returned by the domain name scheduling service through the user terminal, the live broadcast application program can obtain the expected live broadcast application resource by accessing the BGP server address preset on the user terminal, the failure of accessing the live broadcast application due to the abnormity of the domain name resolution process can be avoided, and the controllability of the time overhead and the resolution result of the domain name resolution can be realized.
In the embodiment of the application, after a live application program sends domain name resolution requests to a domain name server and a domain name scheduling service through a user terminal respectively, if the domain name scheduling service successfully resolves the domain name within preset time, the domain name scheduling service returns the IP list corresponding to the domain name to the user terminal, and the user terminal caches the IP list and names the IP list as a domain name cache IP table.
In the embodiment of the application, the user terminal periodically judges whether the live broadcast application program obtains the domain name cache IP table corresponding to the domain name, if so, the live broadcast application program accesses the resource corresponding to the domain name through the second IP address in the domain name cache IP table, so that the live broadcast application resource can be obtained.
In the embodiment of the application, the result of domain name resolution is cached through the domain name cache IP table positioned in the user terminal, so that the repeated use of the result of one-time resolution of a live broadcast application program can be ensured, the domain name resolution frequency and the resource overhead can be reduced, in addition, the request quantity of domain name scheduling service can be obviously reduced, and the server pressure is reduced.
In this embodiment of the present application, before sending the domain name resolution request to the domain name server and the domain name scheduling service respectively in step S1, the method further includes the steps of:
presetting a message format for domain name resolution service between the user terminal and the domain name server;
constructing a domain name scheduling database through the domain name scheduling service;
presetting a domain name scheduling and analyzing module on the user terminal;
and presetting a BGP server address on the user terminal.
In the embodiment of the present application, before performing the operation in step S1, the following preparation or server work needs to be completed in advance, specifically, the method includes: presetting a message format for domain name resolution service between the user terminal and the domain name server, wherein the message format can be used for standardizing messages of domain name resolution service such as domain name query, domain name response and the like between the user terminal and the domain name server; a domain name scheduling database is constructed through the domain name scheduling service, and the domain name scheduling database is used for the user terminal to select IP in the domain name scheduling database; presetting a domain name scheduling and analyzing module on the user terminal, wherein the domain name scheduling and analyzing module is used for realizing reliable connection between the user terminal and a domain name scheduling service; and presetting a BGP server address on the user terminal, wherein the BGP server address is used for performing domain name resolution when the domain name server fails to resolve the domain name and the domain name scheduling service fails to resolve the domain name.
In this embodiment of the present application, the presetting of the message format for the domain name resolution service between the user terminal and the domain name server includes the steps of:
presetting the message type of a domain name query service initiated by the user terminal to the domain name server;
presetting the message type of a domain name response service returned to the user terminal by the domain name server;
presetting the message type of a retry-later service returned to the user terminal by the domain name server;
presetting the message type of the analysis error service returned to the user terminal by the domain name server;
and presetting the maximum validity period of the domain name scheduling result returned to the user terminal by the domain name server.
In this embodiment of the present application, a format of a message used for a domain name resolution service between the user terminal and the domain name server may be a json format, and is defined as follows:
in the embodiment of the present application, the format defined as similar to the above has many advantages for the domain name resolution service: the service type _ service field has strong expandability; based on the service type _ service field, the IP address of the server with the highest service bearing capacity can be returned in a targeted manner; the age field returned by the domain name server sets the maximum validity period of the domain name scheduling result, so that the domain name scheduling result is prevented from being used after being expired.
In an embodiment of the present application, the constructing a domain name scheduling database by the domain name scheduling service includes:
the domain name scheduling service periodically counts the load of each server;
the domain name scheduling service periodically counts the service type with the strongest bearing capacity of each server;
the domain name scheduling service periodically counts operators where the servers are located;
the domain name scheduling service periodically counts the geographic position of each server;
and forming the domain name scheduling database according to the load, the service type, the operator and the geographic position corresponding to each server.
In this embodiment of the present application, the domain name scheduling database at least includes: the load of each server, the service type with the strongest bearing capacity of each server, the operator where each server is located and the geographical position where each server is located, and the domain name scheduling service periodically counts the load, the service type, the operator and the geographical position, so that the domain name scheduling database is formed and a data basis is provided for the subsequent domain name scheduling service to return to an IP list.
In this embodiment of the present application, the resolution of the domain name by the domain name scheduling service in step S2 includes the steps of:
acquiring a domain name scheduling and analyzing module preset on the user terminal;
acquiring a preset message format used for domain name resolution service between the user terminal and the domain name server;
the domain name scheduling and resolving module sends the domain name resolving request to the domain name scheduling service in a preset message format;
the domain name scheduling analysis module provides a domain name scheduling API interface with the maximum validity period of a domain name scheduling result to the domain name scheduling service;
judging whether the domain name scheduling service successfully receives the IP list corresponding to the domain name;
and if so, the domain name scheduling service returns the IP list to the user terminal through the domain name scheduling API interface.
In the embodiment of the application, the completion of domain name resolution between the live application program on the user terminal and the domain name scheduling service is completed through a domain name scheduling resolution module configured on the user terminal. Specifically, the live application program sends the domain name resolution request to the domain name scheduling service in a preset message format (such as json format) through the domain name scheduling resolution module, at this time, the domain name scheduling resolution module provides the domain name scheduling API interface with the maximum validity period of the domain name scheduling result to the domain name scheduling service, and the domain name scheduling service sends the IP list corresponding to the domain name to the user terminal through the domain name scheduling API interface.
In this embodiment of the present application, the step of the domain name scheduling service returning the IP list to the user terminal through the domain name scheduling API interface includes:
the domain name scheduling service receives the domain name resolution request sent by the user terminal;
the domain name scheduling service analyzes the message format according to the preset message format to obtain a response field;
the domain name scheduling service searches an IP set of L servers which are qualified for the service type corresponding to the service type field from a domain name scheduling database according to the service type field to obtain an alternative IP set L;
the domain name scheduling service retrieves the operator and the geographic information of the user terminal from an IP database according to the IP of the user terminal, and selects an IP set of M servers which are positioned in the same operator as the IP of the user terminal from the alternative IP set L to obtain an alternative IP set M;
the domain name scheduling service selects an IP set of N servers which are positioned in the same province as the user terminal from the alternative IP set M to obtain an alternative IP set N;
judging whether the alternative IP set N is not empty;
if yes, returning the alternative IP set N to the user terminal in the preset message format;
if not, judging whether the alternative IP set M is not empty;
if yes, returning the alternative IP set M to the user terminal in the preset message format;
if not, judging whether the alternative IP set L is not empty;
if yes, returning the alternative IP set L to the user terminal in the preset message format;
if not, the domain name scheduling service returns a message for analyzing the error service type to the user terminal.
In the embodiment of the application, the domain name scheduling service selects a proper IP list from a domain name scheduling database through the domain name scheduling API interface, and returns the IP list to the user terminal. Specifically, the domain name scheduling service retrieves an IP set of L servers which is qualified for the service type corresponding to the service type field from a domain name scheduling database according to the service type field to obtain an alternative IP set L, retrieves the operator and the geographic information of the user terminal from the IP database according to the IP of the user terminal, and selects an IP set of M servers which are located in the same operator as the IP of the user terminal from the alternative IP set L to obtain an alternative IP set M; then, selecting an IP set of N servers which are positioned in the same province as the user terminal from the alternative IP set M to obtain an alternative IP set N; and then returning the optimal IP set to the user terminal in a preset message format according to the mode that the priority is 'alternative IP set N' ≧ alternative IP set M '≧ alternative IP set L'. Specifically, firstly, judging whether the alternative IP set N is non-empty; if the alternative IP set N is a non-empty set, returning the alternative IP set N to the user terminal in the preset message format; if the alternative IP set N is an empty set, judging whether the alternative IP set M is not empty; if the alternative IP set M is a non-empty set, returning the alternative IP set M to the user terminal in the preset message format; if the alternative IP set M is an empty set, judging whether the alternative IP set L is not empty; if the alternative IP set L is a non-empty set, returning the alternative IP set L to the user terminal in the preset message format; and if the alternative IP set L is an empty set, the domain name scheduling service returns a message for analyzing the error service type to the user terminal.
In the embodiment of the application, the domain name scheduling service is realized based on a reliable connection mode, the software and the hardware of the server are controllable and reliable, and the resolution result returned by aiming at the domain name is controllable and predictable, so that the IP address of the server with strong bearing capacity can be returned; the risk that the local domain name server of the user side is polluted and hijacked can be greatly avoided; the domain name scheduling service can collect a server IP set with the strongest service bearing capacity aiming at each service in any multiple types of services to form an alternative service IP set; the service domain name scheduling can generate a plurality of alternative service IP sets L, M, N from the alternative service IP set for the user request, and select the non-empty IP set with the highest priority to return to the user terminal.
In this embodiment of the present application, the step of the domain name scheduling service returning the IP list to the user terminal through the domain name scheduling API interface further includes:
judging whether to access the domain name and the IP list corresponding to the domain name before the maximum effective period of the domain name scheduling result is reached;
if yes, calling the domain name scheduling and analyzing module to analyze the domain name to obtain a new IP list, and replacing the expired IP list with the new IP list;
and if not, deleting the domain name and the IP list corresponding to the domain name.
In this embodiment of the present application, when the domain name scheduling service successfully resolves the domain name within a preset time, the IP list corresponding to the domain name is cached to obtain a domain name cache IP table corresponding to the domain name, and it is determined whether to access the domain name and its corresponding domain name cache IP table before the maximum validity period of the domain name scheduling result is reached. If the domain name cache IP table is accessed, calling the domain name scheduling and analyzing module to analyze the domain name to obtain a new IP list, and replacing the expired IP list with the new IP list; and if the domain name cache IP table is not accessed, deleting the domain name and the IP list corresponding to the domain name.
In the embodiment of the application, the mechanism periodically carries out dynamic aging and refreshing on the domain name in the domain name cache IP table and the corresponding IP list, so that the accessed IP is ensured to be recently obtained, and the older IP can be automatically removed;
as shown in fig. 2, in the embodiment of the present application, the present invention further provides a device for accelerating domain name resolution, where the device includes:
a domain name resolution request sending module 10, configured to send a domain name resolution request to a domain name server and a domain name scheduling service, respectively, by a user terminal;
a determining module 20, configured to determine whether any one of the domain name server and the domain name scheduling service resolves the domain name successfully within a preset time, determine whether the domain name scheduling service resolves the domain name successfully within the preset time, and determine whether the domain name cache IP table corresponding to the domain name is obtained;
an executing module 30, configured to execute a preset operation according to the determination result of the determining module 20:
when the determining module 20 determines whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds within a preset time, the executing module 30 randomly selects a first IP address from an IP list corresponding to the domain name returned by the user terminal and uses the first IP address to access a resource corresponding to the domain name; when the determining module 20 determines whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds or not within a preset time, the executing module 30 accesses the resource corresponding to the domain name by using a BGP server address preset on the user terminal; when the determining module 20 determines whether the domain name scheduling service successfully resolves the domain name within a preset time, the executing module 30 caches the IP list corresponding to the domain name to obtain a domain name cache IP table corresponding to the domain name; when the determining module 20 determines whether the result of obtaining the domain name cache IP table corresponding to the domain name is yes, the executing module 30 uses the second IP address in the domain name cache IP table to access the resource corresponding to the domain name.
The device for accelerating domain name resolution provided by the application can execute the method for accelerating domain name resolution.
Referring now to fig. 3, a schematic diagram of an electronic device 100 suitable for implementing an embodiment of the present disclosure is shown, where the electronic device 100 is capable of implementing the method for accelerating domain name resolution as described in any of the above. The electronic devices in the embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., car navigation terminals), and the like, and fixed terminals such as digital TVs, desktop computers, and the like. The electronic device shown in fig. 3 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 3, the electronic device 100 may include a processing means (e.g., a central processing unit, a graphic processor, etc.) 101 that may perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)102 or a program loaded from a storage means 108 into a Random Access Memory (RAM) 103. In the RAM 103, various programs and data necessary for the operation of the electronic apparatus 100 are also stored. The processing device 101, the ROM102, and the RAM 103 are connected to each other via a bus 104. An input/output (I/O) interface 105 is also connected to bus 104.
Generally, the following systems may be connected to the I/O interface 105: input devices 106 including, for example, a touch screen, touch pad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; an output device 107 including, for example, a Liquid Crystal Display (LCD), a speaker, a vibrator, and the like; storage devices 108 including, for example, magnetic tape, hard disk, etc.; and a communication device 1010. The communication means 1010 may allow the electronic device 100 to communicate with other devices wirelessly or by wire to exchange data. While the figures illustrate an electronic device 100 having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.
In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication means 1010, or installed from the storage means 108, or installed from the ROM 102. The computer program, when executed by the processing device 101, performs the above-described functions defined in the methods of the embodiments of the present disclosure.
Reference is now made to fig. 4, which shows a schematic structural diagram of a computer-readable storage medium suitable for implementing an embodiment of the present disclosure, the computer-readable storage medium storing a computer program which, when executed by a processor, is capable of implementing the method of accelerating domain name resolution as described in any of the above.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor device, system, or apparatus, or a combination of any of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution apparatus, system, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution apparatus, system, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The computer readable medium may be embodied in the electronic device; or may exist separately without being assembled into the electronic device.
The computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising the at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects the internet protocol addresses from the at least two internet protocol addresses and returns the internet protocol addresses; receiving an internet protocol address returned by the node evaluation equipment; wherein the obtained internet protocol address indicates an edge node in the content distribution network.
Alternatively, the computer readable medium carries one or more programs which, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from the at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, including conventional procedural programming languages, such as the "C" programming language, or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of a unit does not in some cases constitute a limitation of the unit itself, for example, the first retrieving unit may also be described as a "unit for retrieving at least two internet protocol addresses".
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
The method, the device, the electronic equipment and the computer readable storage medium for accelerating domain name resolution can realize domain name resolution with controllable time overhead and controllable resolution result; the client request can be processed through the uniform load of a plurality of servers at the server side, so that the overload fault of a single machine is avoided; the user side can access the service node with the minimum delay and the best network, the service loading time of the client is reduced, the jamming is eliminated, and the user experience is improved.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "first" and "second" in this application are to be understood as terms.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for accelerating domain name resolution, the method comprising the steps of:
a user terminal sends domain name resolution requests to a domain name server and a domain name scheduling service respectively;
judging whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name is successful within preset time;
if yes, randomly selecting a first IP address from the IP list corresponding to the domain name returned from the user terminal and using the first IP address to access the resource corresponding to the domain name;
if not, accessing the resources corresponding to the domain name by using the BGP server address preset on the user terminal;
judging whether the domain name scheduling service successfully resolves the domain name within preset time;
if yes, caching the IP list corresponding to the domain name to obtain a domain name cache IP list corresponding to the domain name;
judging whether the domain name cache IP table corresponding to the domain name is obtained or not;
and if so, accessing the resource corresponding to the domain name by using the second IP address in the domain name cache IP table.
2. The method for accelerating domain name resolution according to claim 1, further comprising, before sending the domain name resolution request to the domain name server and the domain name scheduling service, respectively:
presetting a message format for domain name resolution service between the user terminal and the domain name server;
constructing a domain name scheduling database through the domain name scheduling service;
presetting a domain name scheduling and analyzing module on the user terminal;
and presetting a BGP server address on the user terminal.
3. The method for accelerating domain name resolution according to claim 2, wherein the presetting of the message format for domain name resolution service between the user terminal and the domain name server comprises the steps of:
presetting the message type of a domain name query service initiated by the user terminal to the domain name server;
presetting the message type of a domain name response service returned to the user terminal by the domain name server;
presetting the message type of a later retry service returned to the user terminal by the domain name server;
presetting the message type of the analysis error service returned to the user terminal by the domain name server;
and presetting the maximum validity period of the domain name scheduling result returned to the user terminal by the domain name server.
4. The method for accelerating domain name resolution according to claim 2, wherein said building a domain name scheduling database by said domain name scheduling service comprises the steps of:
the domain name scheduling service periodically counts the load of each server;
the domain name scheduling service periodically counts the service type with the strongest bearing capacity of each server;
the domain name scheduling service periodically counts operators where the servers are located;
the domain name scheduling service periodically counts the geographic position of each server;
and forming the domain name scheduling database according to the load, the service type, the operator and the geographic position corresponding to each server.
5. The method for accelerating domain name resolution according to claim 1, wherein the domain name scheduling service resolving the domain name comprises the steps of:
acquiring a domain name scheduling and analyzing module preset on the user terminal;
acquiring a preset message format used for domain name resolution service between the user terminal and the domain name server;
the domain name scheduling and resolving module sends the domain name resolving request to the domain name scheduling service in a preset message format;
the domain name scheduling analysis module provides a domain name scheduling API interface with the maximum validity period of a domain name scheduling result to the domain name scheduling service;
judging whether the domain name scheduling service successfully receives the IP list corresponding to the domain name;
and if so, the domain name scheduling service returns the IP list to the user terminal through the domain name scheduling API interface.
6. The method for accelerating domain name resolution according to claim 5, wherein the step of the domain name scheduling service returning the IP list to the user terminal through the domain name scheduling API interface comprises the steps of:
the domain name scheduling service receives the domain name resolution request sent by the user terminal;
the domain name scheduling service analyzes the domain name scheduling service according to a preset message format to obtain a response field;
the domain name scheduling service searches an IP set of L servers which are qualified for the service type corresponding to the service type field from a domain name scheduling database according to the service type field to obtain an alternative IP set L;
the domain name scheduling service retrieves the operator and the geographic information of the user terminal from an IP database according to the IP of the user terminal, and selects an IP set of M servers which are positioned in the same operator as the IP of the user terminal from the alternative IP set L to obtain an alternative IP set M;
the domain name scheduling service selects an IP set of N servers which are positioned in the same province as the user terminal from the alternative IP set M to obtain an alternative IP set N;
judging whether the alternative IP set N is not empty;
if yes, returning the alternative IP set N to the user terminal in the preset message format;
if not, judging whether the alternative IP set M is not empty;
if yes, returning the alternative IP set M to the user terminal in the preset message format;
if not, judging whether the alternative IP set L is not empty;
if yes, returning the alternative IP set L to the user terminal in the preset message format;
if not, the domain name scheduling service returns a message for analyzing the error service type to the user terminal.
7. The method of claim 5, wherein the step of the domain name scheduling service returning the IP list to the user terminal through the domain name scheduling API interface further comprises the steps of:
judging whether to access the domain name and the IP list corresponding to the domain name before the maximum effective period of the domain name scheduling result is reached;
if yes, calling the domain name scheduling and analyzing module to analyze the domain name to obtain a new IP list, and replacing the expired IP list with the new IP list;
and if not, deleting the domain name and the IP list corresponding to the domain name.
8. An apparatus for accelerating domain name resolution, the apparatus comprising:
the domain name resolution request sending module is used for sending domain name resolution requests to a domain name server and a domain name scheduling service respectively by the user terminal;
the judging module is used for judging whether any one of the domain name server analysis domain name and the domain name scheduling service analysis domain name is successful within preset time, judging whether the domain name scheduling service successfully analyzes the domain name within preset time, and judging whether the domain name cache IP table corresponding to the domain name is obtained;
the execution module is used for executing preset operation according to the judgment result of the judgment module;
when the judging module judges whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds within a preset time, the executing module randomly selects a first IP address from an IP list corresponding to the domain name returned by the user terminal and uses the first IP address to access the resource corresponding to the domain name; when the judging module judges whether any one of the domain name server resolution domain name and the domain name scheduling service resolution domain name succeeds in a preset time, the executing module accesses the resource corresponding to the domain name by using a BGP server address preset on the user terminal; when the judging module judges whether the domain name scheduling service successfully resolves the domain name within the preset time, the executing module caches the IP list corresponding to the domain name to obtain a domain name cache IP table corresponding to the domain name; and when the judging module judges whether the result of obtaining the domain name cache IP table corresponding to the domain name is yes, the executing module uses a second IP address in the domain name cache IP table to access the resource corresponding to the domain name.
9. An electronic device, characterized in that the electronic device comprises:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a method of accelerating domain name resolution as claimed in any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, is able to carry out a method of accelerating domain name resolution according to any one of claims 1 to 7.
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