CN110968356B - Method and device for acquiring configuration information - Google Patents

Abstract

The application provides a method and a device for acquiring configuration information, which are applied to CDN equipment and comprise the following steps: receiving request information sent by a client, wherein the request information comprises domain name information corresponding to the client; and acquiring configuration information corresponding to the domain name information from the shared memory of the CDN equipment according to the domain name information, so that reloading operation is avoided, and the performance of the CDN equipment is stable.

Description

Methods and devices for obtaining configuration information

Technical field

The present invention relates to the field of network technology, and in particular, to methods and devices for obtaining configuration information.

Background technique

Add or modify the conf file of the server block in the configuration file of nginx (content distribution network CDN device), and then nginx will perform a reload operation so that nginx can complete the loading of the new configuration without interrupting the service. Among them, in the server The port, IP or domain name that needs to be monitored can be configured on the block. The conf file is the configuration file.

When nginx performs a reloading operation, it may cause QPS (Query PerSecond, query rate per second) to decrease when the traffic is large, causing some requests to time out, thus affecting the stability of the CDN service; in addition, reloading The loading operation will close the long link between nginx and the client, causing the request information sent by the client to be rejected, which may affect the stability of the CDN service.

Therefore, no effective solution has yet been proposed for the problem in related technologies that nginx performs a reload operation when the nginx configuration file is added or modified, resulting in poor stability of the CDN service.

Contents of the invention

In view of this, the purpose of the present invention is to provide a method and device for obtaining configuration information, which stores the first specified file in the shared memory. When the client sends the request information, the corresponding configuration information is obtained from the shared memory, thereby avoiding The reloading operation makes the CDN device performance stable.

In a first aspect, embodiments of the present invention provide a method for obtaining configuration information, which is applied to a content distribution network CDN device. The method includes: receiving request information sent by a client, wherein the request information includes information related to the client. Corresponding domain name information;

Obtain configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information.

Further, the shared memory stores a first designated file, where the corresponding relationship between the domain name and the configuration information is stored in the first designated file.

Further, the method also includes:

Monitor whether the second specified file in the specified directory of the CDN device is updated; wherein the second specified file stores the corresponding relationship;

When an update of the second designated file is detected, the difference file received from the configuration file delivery system is synchronized to the first designated file in the shared memory. Further, obtaining the configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information includes at least one of the following:

In the case that the first specified file has not been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the unupdated file from the shared memory is retrieved from the shared memory according to the domain name information. Obtain the configuration information corresponding to the domain name information from the first specified file;

In the case that the first specified file has been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the updated file from the shared memory according to the domain name information Obtain the configuration information corresponding to the domain name information from the first specified file.

Further, the monitoring of whether the second specified file in the specified directory of the CDN device is updated includes:

Monitor whether the time attribute of the second designated file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second designated file has been updated, and when it is monitored that the time attribute has not changed, it is determined that the second designated file has been updated. In the event of a change, it is determined that the second specified file has not been updated.

Further, the domain name information includes first domain name information and second domain name information, the first domain name information is subordinate to the second domain name information, and the domain name information is obtained from the shared memory of the CDN device according to the domain name information. Configuration information corresponding to the domain name information includes:

Search the shared memory for configuration information corresponding to the first domain name information according to the first domain name information;

If the configuration information is not found, the configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information.

In the second aspect, embodiments of the present invention provide a device for obtaining configuration information, which is applied to content distribution network CDN equipment. The device includes:

A receiving unit configured to receive request information sent by the client, where the request information includes domain name information corresponding to the client;

An acquisition unit configured to acquire configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information.

Further, the shared memory stores a first designated file, where the corresponding relationship between the domain name and the configuration information is stored in the first designated file.

Further, the device also includes:

A monitoring unit configured to monitor whether the second designated file in the designated directory of the CDN device is updated; wherein the second designated file stores the corresponding relationship;

A synchronization unit, configured to synchronize the difference file received from the configuration file delivery system to the first specified file in the shared memory when it is detected that the second specified file is updated.

Further, the acquisition unit includes at least one of the following:

In the case that the first specified file has not been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the unupdated file from the shared memory is retrieved from the shared memory according to the domain name information. Obtain the configuration information corresponding to the domain name information from the first specified file;

In the case that the first specified file has been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the updated file from the shared memory according to the domain name information Obtain the configuration information corresponding to the domain name information from the first specified file.

Further, the monitoring unit includes:

Monitor whether the time attribute of the second designated file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second designated file has been updated, and when it is monitored that the time attribute has not changed, it is determined that the second designated file has been updated. In the event of a change, it is determined that the second specified file has not been updated.

Further, the domain name information includes first domain name information and second domain name information. The first domain name information is subordinate to the second domain name information. The acquisition unit also includes:

Search the shared memory for configuration information corresponding to the first domain name information according to the first domain name information;

If the configuration file is not found, configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information.

In a third aspect, embodiments of the present invention provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program Steps to implement the above method of obtaining configuration information.

In a fourth aspect, embodiments of the present invention provide a computer storage medium on which a computer program is stored. When the computer runs the computer program, it performs the steps of the above method for obtaining configuration information.

Embodiments of the present invention provide methods and devices for obtaining configuration information, which are applied to content distribution network CDN equipment, including: receiving request information sent by a client, where the request information includes domain name information corresponding to the client; Obtain the configuration information corresponding to the domain name information from the shared memory of the CDN device. This avoids the reloading operation and ensures stable performance of the CDN device.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description, claims and appended drawings.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings.

Description of the drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting any creative effort.

Figure 1 is a flow chart of a method for obtaining configuration information provided by Embodiment 1 of the present invention;

Figure 2 is a flow chart of step S102 in the method for obtaining configuration information provided in Embodiment 1 of the present invention;

Figure 3 is a schematic diagram of a device for obtaining configuration information provided in Embodiment 2 of the present invention;

FIG. 4 is a schematic diagram of an electronic device provided by Embodiment 3 of the present invention.

icon:

30-processor; 31-memory; 32-bus; 33-communication interface; 10-receiving unit; 20-acquisition unit.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

In order to facilitate understanding of this embodiment, the embodiment of the present invention is introduced in detail below.

Example 1:

Figure 1 is a flow chart of a method for dynamically loading configuration files provided by Embodiment 1 of the present invention.

Referring to Figure 1, applied to CDN (Content Delivery Network, content distribution network) equipment, nginx can be considered as a CDN equipment. In this embodiment, the native nginx configuration function (conf file) is corresponding to the Lua script. into different functional configurations, that is, the configuration function of nginx is Lua-ified. The method includes the following steps:

Step S101: Receive request information sent by the client, where the request information includes domain name information corresponding to the client;

Step S102: Obtain configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information.

It should be noted that the above configuration information can include multiple functions, that is, it can be composed of multiple functions. One configuration information can correspond to a domain name, that is, the complete configuration information corresponding to a domain name can be configured by multiple functions as required. combination, but not limited to this. . In addition, the above configuration information can be the configuration information obtained after conf configuration information has been transformed into Lua. For example, the conf configuration information of nginx includes location. The conf file is divided into http, server and location, with a total of 3 layers. http is the first layer. , server is the second layer, location is the third layer, and there is an inclusive relationship between each layer. The server layer is for the configuration of the entire domain name, and the location layer is for the configuration of certain paths of books under this domain name; among them, The Lua configuration corresponding to location is uri (regular expression); where location means path.

The configuration information of nginx supports listening port (listen 80), and the corresponding Lua configuration is port: 80. Among them, port is the function name, 80 is the port number, and listen 80 means listening to port 80. The original configuration of nginx cannot support dynamic loading. After configuring with Lua, the configuration with the same function that supports dynamic loading is implemented.

In this embodiment, when the client sends request information to the CDN device, the CDN device searches the shared memory according to the domain name information in the request information and obtains the configuration information corresponding to the domain name information. Each time the client sends request information to the CDN device, it obtains the corresponding configuration information from the shared memory, thus avoiding the reloading operation and making the performance of the CDN device stable.

Further, the shared memory stores a first designated file, wherein the first designated file stores a corresponding relationship between the domain name and the configuration information.

Here, the first specified file is obtained by reading the second specified file from the directory, or is obtained from the second specified file and the difference file. The second specified file may be a table file in json format, which is a Lua-enabled file; the above-mentioned first specified file may also be a table file in json format, but is not limited to this.

Further, the method also includes the following steps:

Step S201: Monitor whether the second designated file in the designated directory of the CDN device is updated; wherein, the second designated file stores a corresponding relationship;

Step S202: When it is detected that the second designated file is updated, the difference file received from the configuration file delivery system is synchronized to the first designated file in the shared memory.

It should be noted that the above configuration file delivery system delivers the differential files to the specified directory of the CDN device. When it is detected that the second specified file has been updated, the CDN device can directly synchronize the differential files in the specified directory. to the shared memory of the CDN device, without synchronizing the entire second specified file to the shared memory, thus further saving update time. Further, step S102 includes at least one of the following:

When the first designated file has not been updated and the configuration information corresponding to the requested information includes part or all of the content of the difference file, obtain the configuration corresponding to the domain name information from the first designated file that has not been updated in the shared memory based on the domain name information. information;

When the first designated file has been updated and the configuration information corresponding to the requested information includes part or all of the content of the difference file, obtain the configuration corresponding to the domain name information from the updated first designated file in the shared memory based on the domain name information. information.

Specifically, when the first specified file in the shared memory has not been updated, if the client sends request information, and the configuration information corresponding to the request information includes part or all of the content of the difference file, then the domain name information has never been updated. Obtain the configuration information corresponding to the domain name information from the first specified file.

After the update of the first specified file in the shared memory is completed, if the client sends request information again, and the configuration information corresponding to the request information includes part or all of the contents of the difference file, the updated first file will be updated based on the domain name information. Obtain the configuration information corresponding to the domain name information from the specified file.

In one embodiment of the present application, the above configuration file delivery system not only delivers the difference file to the designated directory of the CDN device, but also delivers the latest complete configuration file (such as the latest second designated file). When the above-mentioned CDN device receives the latest complete configuration file, it will directly overwrite the second specified file previously stored in the specified directory. At this time, the time attribute of the updated second specified file will change. Therefore, the CDN device will check the second specified file in each cycle to determine the latest modification time of the second specified file. If the latest modification time has not changed, it means that the second specified file has not been updated; if the latest modification time If a change occurs, it means that the second specified file has been updated.

Therefore, the above step S201 may include:

Monitor whether the time attribute of the second specified file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second specified file has been updated; when it is detected that the time attribute has not changed, it is determined that the second specified file has been updated. 2. The specified file has not been updated.

It should be noted that the above time attribute may be modification date or modification time, but is not limited to this.

Further, the domain name information includes first domain name information and second domain name information. The first domain name information is subordinate to the second domain name information. Referring to Figure 2, step S102 also includes the following steps:

Step S301, search the configuration information corresponding to the first domain name information from the shared memory according to the first domain name information;

Step S302: If the configuration file is not found, the configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information.

Here, the first domain name information may also be precise domain name information, and the second domain name information may be generic domain name information, but is not limited to this.

Specifically, when updating the memory, the corresponding configuration information can be searched through the first domain name information and the second domain name information. First, the search is performed through the first domain name information. If the corresponding configuration information is not found through the first domain name information, then the corresponding configuration information is searched through the first domain name information. The second domain name information is searched, which can make the search of configuration information more diverse and improve the search efficiency.

Embodiments of the present invention provide a method for obtaining configuration information, which is applied to a content distribution network CDN device, including: receiving request information sent by a client, where the request information includes domain name information corresponding to the client; and obtaining the configuration information from the CDN device according to the domain name information. Obtain the configuration information corresponding to the domain name information from the shared memory, thereby avoiding the reloading operation and making the performance of the CDN device stable.

Example 2:

Figure 3 is a schematic diagram of a device for dynamically loading configuration files provided in Embodiment 2 of the present invention.

Referring to FIG. 3 , applied to content distribution network CDN equipment, the device includes a receiving unit 10 and an acquisition unit 20 .

The receiving unit 10 is configured to receive request information sent by the client, where the request information includes domain name information corresponding to the client;

The obtaining unit 20 is configured to obtain configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information.

Further, the shared memory stores a first designated file, wherein the first designated file stores a corresponding relationship between the domain name and the configuration information.

Furthermore, the device also includes:

A monitoring unit (not shown), configured to monitor whether the second specified file in the specified directory of the CDN device is updated; wherein the second specified file stores a corresponding relationship;

A synchronization unit (not shown), configured to synchronize the difference file received from the configuration file delivery system to the first specified file in the shared memory when an update of the second specified file is detected.

Further, the acquisition unit 20 includes at least one of the following:

When the first designated file has not been updated and the configuration information corresponding to the requested information includes part or all of the content of the difference file, obtain the configuration corresponding to the domain name information from the first designated file that has not been updated in the shared memory according to the domain name information. information;

When the first designated file has been updated and the configuration information corresponding to the requested information includes part or all of the content of the difference file, obtain the configuration corresponding to the domain name information from the updated first designated file in the shared memory based on the domain name information. information.

Further, the monitoring unit (not shown) includes:

Monitor whether the time attribute of the second specified file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second specified file has been updated; when it is detected that the time attribute has not changed, it is determined that the second specified file has been updated. 2. The specified file has not been updated.

Further, the domain name information includes first domain name information and second domain name information. The first domain name information is subordinate to the second domain name information. The acquisition unit 20 also includes:

Search the configuration information corresponding to the first domain name information from the shared memory according to the first domain name information;

If the configuration file is not found, the configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information.

Embodiments of the present invention provide a device for obtaining configuration information, which is applied to a content distribution network CDN device, including: receiving request information sent by a client, where the request information includes domain name information corresponding to the client; and obtaining the configuration information from the CDN device according to the domain name information. Obtain the configuration information corresponding to the domain name information from the shared memory, thereby avoiding the reloading operation and making the performance of the CDN device stable.

Embodiment three:

FIG. 4 is a schematic diagram of an electronic device provided by Embodiment 3 of the present invention.

Referring to Figure 4, the electronic device includes: a processor 30, a memory 31, a bus 32 and a communication interface 33. The processor 30, the communication interface 33 and the memory 31 are connected through the bus 32; the processor 30 is used to execute the program stored in the memory 31. Execution modules, such as computer programs. The processor implements the steps of the method as described in the method embodiment when executing the extreme program.

The memory 31 may include high-speed random access memory (RAM), or may also include non-volatile memory (non-volatile memory), such as at least one disk memory. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 33 (which can be wired or wireless), and the Internet, wide area network, local network, metropolitan area network, etc. can be used.

The bus 32 may be an ISA bus, a PCI bus, an EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one bidirectional arrow is used in Figure 4, but it does not mean that there is only one bus or one type of bus.

The memory 31 is used to store the program, and the processor 30 executes the program after receiving the execution instruction. The method executed by the device for stream process definition disclosed in any of the embodiments of the present invention can be applied to the processor 30, Or implemented by the processor 30.

The processor 30 may be an integrated circuit chip with signal processing capabilities. During the implementation process, each step of the above method can be completed by instructions in the form of hardware integrated logic circuits or software in the processor 30 . The above-mentioned processor 30 can be a general-purpose processor, including a Central Processing Unit (CPU for short), a Network Processor (NP for short), etc.; it can also be a Digital Signal Processing (DSP for short) , Application Specific Integrated Circuit (ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components. Each method, step and logical block diagram disclosed in the embodiment of the present invention can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory 31. The processor 30 reads the information in the memory 31 and completes the steps of the above method in combination with its hardware.

In another embodiment of the present invention, a computer storage medium is also provided, on which a computer program is stored. When the computer runs the computer program, it executes the steps of the above method embodiment.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems and devices described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In addition, in the description of the embodiments of the present invention, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code. .

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations of the invention. Furthermore, the terms “first”, “second” and “third” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that the above-mentioned embodiments are only specific implementations of the present invention and are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although refer to the foregoing The embodiments illustrate the present invention in detail. Those of ordinary skill in the art should understand that any person familiar with the technical field can still modify the technical solutions recorded in the foregoing embodiments within the technical scope disclosed by the present invention. It may be easy to think of changes, or equivalent substitutions of some of the technical features; and these modifications, changes or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and they should all be included in the present invention. within the scope of protection. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (12)

1. A method for obtaining configuration information, characterized in that it is applied to content distribution network CDN equipment, and the method includes: Receive request information sent by the client, wherein the request information includes domain name information corresponding to the client; Obtain configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information; The domain name information includes first domain name information and second domain name information. The first domain name information is subordinate to the second domain name information. The domain name information is obtained from the shared memory of the CDN device according to the domain name information. Configuration information corresponding to domain name information, including: Search the shared memory for configuration information corresponding to the first domain name information according to the first domain name information; If the configuration information corresponding to the first domain name information is not found, the configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information. 2. The method of claim 1, wherein the shared memory stores a first designated file, wherein the first designated file stores a corresponding relationship between domain names and configuration information. 3. The method according to claim 2, characterized in that, the method further comprises: Monitor whether the second specified file in the specified directory of the CDN device is updated; wherein the second specified file stores the corresponding relationship; When it is detected that the second designated file is updated, the difference file received from the configuration file delivery system is synchronized to the first designated file in the shared memory. 4. The method according to claim 3, wherein the obtaining the configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information includes at least one of the following: In the case that the first specified file has not been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the unupdated file from the shared memory is retrieved from the shared memory according to the domain name information. Obtain the configuration information corresponding to the domain name information from the first specified file; In the case that the first specified file has been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the updated file from the shared memory according to the domain name information Obtain the configuration information corresponding to the domain name information from the first specified file. 5. The method according to claim 3, wherein monitoring whether the second specified file in the specified directory of the CDN device is updated includes: Monitor whether the time attribute of the second designated file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second designated file has been updated, and when it is monitored that the time attribute has not changed, it is determined that the second designated file has been updated. In the event of a change, it is determined that the second specified file has not been updated. 6. A device for obtaining configuration information, characterized in that it is applied to content distribution network CDN equipment, and the device includes: A receiving unit configured to receive request information sent by the client, where the request information includes domain name information corresponding to the client; An acquisition unit configured to acquire configuration information corresponding to the domain name information from the shared memory of the CDN device according to the domain name information; The domain name information includes first domain name information and second domain name information. The first domain name information is subordinate to the second domain name information. The acquisition unit also includes: Search the configuration information corresponding to the first domain name information from the shared memory according to the first domain name information; If the configuration information is not found, the configuration information corresponding to the second domain name information is obtained from the shared memory according to the second domain name information. 7. The device according to claim 6, wherein the shared memory stores a first designated file, wherein the first designated file stores a corresponding relationship between the domain name and the configuration information. 8. The device according to claim 7, characterized in that the device further comprises: A monitoring unit configured to monitor whether the second designated file in the designated directory of the CDN device is updated; wherein the second designated file stores the corresponding relationship; A synchronization unit, configured to synchronize the difference file received from the configuration file delivery system to the first specified file in the shared memory when it is detected that the second specified file is updated. 9. The device according to claim 8, characterized in that the acquisition unit includes at least one of the following: In the case that the first specified file has not been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the unupdated file from the shared memory is retrieved from the shared memory according to the domain name information. Obtain the configuration information corresponding to the domain name information from the first specified file; In the case that the first specified file has been updated and the configuration information corresponding to the request information includes part or all of the content of the difference file, the updated file from the shared memory according to the domain name information Obtain the configuration information corresponding to the domain name information from the first specified file. 10. The device according to claim 8, characterized in that the monitoring unit includes: Monitor whether the time attribute of the second designated file has changed; wherein, when it is detected that the time attribute has changed, it is determined that the second designated file has been updated, and when it is monitored that the time attribute has not changed, it is determined that the second designated file has been updated. In the event of a change, it is determined that the second specified file has not been updated. 11. An electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that when the processor executes the computer program, the above claims are realized The method described in any one of 1 to 5. 12. A computer storage medium, characterized in that a computer program is stored thereon, and when the computer runs the computer program, the steps of the method described in any one of claims 1 to 5 are performed.