WO2020024709A1

WO2020024709A1 - Method and apparatus for classifying and acquiring cache pages, and electronic device

Info

Publication number: WO2020024709A1
Application number: PCT/CN2019/091521
Authority: WO
Inventors: 马静; 茅晓锋; 方凯
Original assignee: 阿里巴巴集团控股有限公司
Priority date: 2018-08-01
Filing date: 2019-06-17
Publication date: 2020-02-06
Also published as: CN109218395A; TW202008187A; CN109218395B; TWI743487B

Abstract

The embodiments of the present description provide a method and apparatus for classifying cache pages, and an electronic device. The method comprises: a cache server sending a request message for a page cache to a source server; receiving a response message returned by the source server, and acquiring a classification field in a message header of the response message, wherein the classification field is a customized field written by the source server into a header field in the message header of the response message; and classifying and caching message content of the response message according to the classification field.

Description

Classification and acquisition method and device of cached page, and electronic equipment

Technical field

The embodiments of the present specification relate to the field of Internet technologies, and in particular, to a method and device for classifying and acquiring cached pages, and an electronic device.

Background technique

In order to provide Internet access speed and reduce the time for users to access pages, a cache server for caching pages is proposed. When the user accesses the target page, the user first accesses the cache server through the CDN. When the cache server has the target page cached, the cached target page is returned directly to the client.

Generally, in order to improve query efficiency, the cache server can classify cached pages in advance. In the related art, the cache server may perform classification based on a fixed number of fields for classification. However, because these fields are fixed and have a fixed meaning, that is, the cached pages can only be classified according to a limited dimension.

There is a need to provide a more flexible and efficient classification scheme for cached pages.

Summary of the invention

A method, an apparatus, and an electronic device for classifying a cache page, and a method, an apparatus, and an electronic device for acquiring a cache page provided in the embodiments of the present specification:

According to a first aspect of the embodiments of the present specification, a method for classifying a cache page is provided. The method includes:

The cache server sends a page cache request message to the source server;

Receive a response message returned by the source server, and obtain a classification field in a message header of the response message; wherein the classification field is a header written by the source server in a message header of the response message Custom fields under fields;

Classify and buffer the message content of the response message according to the classification field.

According to a second aspect of the embodiments of the present specification, a method for acquiring a cached page is provided. The method includes:

The client intercepts the request message of the page acquisition initiated by the user;

Write the user's marking information into the header of the request message; the marking information includes a classification field and a field value;

Forward the processed request message to a cache server; so that the cache server queries the page content of the corresponding category according to the classification field and field value;

Accept the page content returned by the cache server.

According to a third aspect of the embodiments of the present specification, a device for classifying a cache page is provided, and the device includes:

A sending unit, the cache server sends a page cache request message to the source server;

The obtaining unit receives a response message returned by the source server, and obtains a classification field in a message header of the response message, where the classification field is written by the source server in a message header of the response message Enter the custom field under the header field;

The classification unit buffers the content of the response message according to the classification field.

According to a fourth aspect of the embodiments of the present specification, an apparatus for acquiring a cached page is provided. The apparatus includes:

Interception unit, the client intercepts the request message of the page acquisition initiated by the user;

A writing unit that writes the user's marking information into a header of the request message; the marking information includes a classification field and a field value;

A forwarding unit, which forwards the processed request message to a cache server; so that the cache server queries the page content of the corresponding category according to the classification field and the field value;

The receiving unit accepts the page content returned by the cache server.

According to a fifth aspect of the embodiments of the present specification, an electronic device is provided, including:

processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured as any one of the above-mentioned cache page classification methods.

According to a sixth aspect of the embodiments of the present specification, an electronic device is provided, including:

processor;

Memory for storing processor-executable instructions;

The processor is configured as any one of the foregoing methods for acquiring a cached page.

The embodiments of the present specification provide a classification and retrieval scheme for cached pages. On the one hand, a custom classification field is provided for users to use; thus, when the cache server performs classification caching, it can be based on more classification basis and more flexible. The classification effect achieved is better. On the other hand, through the cooperation of multiple parties such as the client, cache server, and source server, the same classification rules can be used to achieve the classification of cached pages and the acquisition of cached pages; including the client's user information based on classification rules in advance. After intercepting a user request, the tag information is written into the message header; and the same classification rule is written in the response message returned by the source server to the cache server, so that the cache server performs cache classification based on the same classification rule.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of a method for classifying and acquiring a cache page provided by an embodiment of the present specification; FIG.

FIG. 2 is a flowchart of a method for classifying a cache page according to an embodiment of the present specification; FIG.

3 is a flowchart of a method for acquiring a cached page provided by an embodiment of the present specification;

4 is a hardware structural diagram of a device for classifying a cache page provided by an embodiment of the present specification;

5 is a schematic block diagram of a device for classifying a cache page according to an embodiment of the present specification;

FIG. 6 is a hardware structural diagram of an apparatus for acquiring a cache page provided by an embodiment of the present specification; FIG.

FIG. 7 is a module schematic diagram of an apparatus for acquiring a cached page provided by an embodiment of the present specification.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Rather, they are merely examples of devices and methods consistent with certain aspects of the specification, as detailed in the appended claims.

The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the specification. As used in this specification and the appended claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "at ..." or "when ..." or "in response to a determination".

In order to solve the above problem, this specification provides a classification and acquisition scheme for cached pages. The following can be introduced with reference to the example shown in FIG. 1. The method can include the following steps:

Step 101: The cache server sends a classification rule to the client, where the classification rule is a classification field used by the cache server to classify the cached page.

The classification rules here can be specifically obtained according to subsequent steps 203-207.

The issuing action in this description is only to explain that the classification rule is provided by the cache server to the client. In some embodiments, the conversion can be performed according to different semantics, for example, it can be a push, that is, the cache server pushes the classification rule to the client; and the other can be that the client actively obtains the classification rule from the cache server, and then the cache The server sends classification rules to the client and so on.

Step 103: The client receives a classification rule issued by the cache server, where the classification rule is a classification field used by the cache server when classifying a cache page.

In an embodiment, the classification field is a custom field written by the source server under a header field written in a response packet.

Step 105: The client marks the current user in advance according to the classification rule to obtain the user's marking information.

The current user may refer to a user currently using a client. The client in this specification may refer to an application client on the software, such as an electronic wallet APP, an instant messaging APP, and the like. Generally, a user needs to log in to an account when using the client, so when the user logs in, the client can mark the currently logged in user.

Specifically, the client may determine the specific value of the classification field according to the user information; and use the classification field and the specific value as the marking information.

In an embodiment, the classification field includes a percentage uniquely identified by the user;

Determining, by the client, specific values of the classification fields according to user data; and using the classification fields and specific values as marking information

Calculating the score ratio according to the unique identifier of the user;

The percentage is used as the value of the classification field.

As an example, suppose the classification field is userID-level (representing the percentage of user ID). According to the user ID, the percentage range of the user is 3%, that is, the user ID is in the top 3% of the total user group. Then, the marking information can be userID-level: 3.

Step 107: The client intercepts a page acquisition request initiated by a user, writes the user's marking information into a header of the request, and initiates a page to the cache server according to the processed request message. Get request.

As mentioned earlier, in order to provide Internet access speed and reduce the time for users to access pages, a cache server for caching pages is proposed. Specifically, the CDN (Content Delivery Network) is used to avoid as much as possible bottlenecks and links on the Internet that may affect data transmission speed and stability, and make content transmission faster and more stable. Generally, a cache server can be placed at each node of the network to form a layer of intelligent virtual network based on the existing Internet. The cache server may cache page content. The CDN system can redirect the user's request to the cache server closest to the user based on comprehensive information such as network traffic and the connection, load status of each node, and the response time to the user. Crowded conditions improve the response speed of users accessing the website.

In this specification, similarly, the DNS (Domain Name System) of the CDN system can parse the page acquisition request, find an optimal cache server, and forward the page acquisition request to the optimal cache server. Generally, the optimal may refer to a cache server closest to the user.

It is worth mentioning that, in practical applications, multiple domain names can point to a server IP at the same time. In order to distinguish, you can configure aliases for the domain names, such as CNAME canonical names. For example, there is a computer named "r0WSPFSx58." (A record), which provides both WWW and MAIL services. In order to facilitate user access to the service, two CNAMEs can be set for the computer: WWW and MAIL. In this way, during access, the CDN system can query the corresponding CDN accelerated domain name according to the CNAME; further, it can resolve the page acquisition request according to the DNS of the CDN system, and find the optimal cache server to the optimal The cache server forwards the page fetch request.

In an embodiment, the writing the user's marking information into a header of the request specifically includes:

Write the user's marking information as a Vary field into the request message header.

The Vary field is usually the header information of an HTTP request / response message. In general, for a request, the Vary field can decide whether to allow the response to be retrieved by selecting the historical response from the cache, or to request a new response from the origin server. In the prior art, there are only a few fixed Vary fields.

In this specification, after adding the classification field to the message header in the form of a Vary field, the original Vary is allowed to obtain the page content from the cache page of the cache server, and a custom classification field is also provided for users to use; thus the cache server classifies When caching, it can be based on more classification basis, more flexible, and better classification effect.

Step 201: The cache server queries the content of the corresponding category from the locally cached page according to the classification field and the field value in the page acquisition request sent by the client.

There may be two cases in the querying the page content of the corresponding category from the locally cached page.

First, if it can be queried, it will directly return the queried page content to the client.

Second, if the query is not available, it indicates that the page content required by the client is not cached; then step 203 is performed.

Step 203: When the page content of the corresponding category cannot be queried, the cache server sends a page cache request message to the source server.

The source server may mean that a client needs to query a target page. Generally, the page acquisition request sent by the client also carries the page address; according to the page address, it can be routed to the source server.

After receiving the page cache request sent by the cache server, the source server obtains the corresponding page content based on the page address; adds a classification field to the header of the response message; and is used by the cache server to perform the page content according to the classification field. Classification; further, a response message containing the content of the page may be returned to the cache server.

Step 205: The cache server receives a response message returned by the source server, and obtains a classification field in a packet header of the response message; wherein the classification field is the response of the source server in the response message. The header is written into the custom field under the header field.

Step 207: The cache server caches the content of the response message according to the classification field.

Specifically, the step 207 may include:

Buffering the page content corresponding to the message content of the response message;

Calculating the value of the classification field under the page content according to the page content;

Classify the cached page into a corresponding category according to the value of the classification field.

It is worth mentioning that the cache server may send the classification field to the client as a classification rule, that is, the foregoing step 101.

Step 209: The cache server returns the message content of the response message to the client.

In the embodiment described above, when the target server does not exist in the cache server, the cache server can obtain the target page from the source server and classify and cache the target page. In this way, when a request to access the target page is encountered again, only the Steps 107 and 201 are repeated. Because the classified target page already exists in the cache page at this time, the page content of the corresponding category can be queried according to the classification field and field value in the page acquisition request. Repeat steps 203, 205, and 207 for queries not found in the cached page.

In the foregoing manner, on the one hand, a custom classification field is provided for users to use; thus, when the cache server performs classification caching, it can be based on more classification basis, more flexible, and achieve better classification results. On the other hand, through the cooperation of multiple parties such as the client, cache server, and source server, the same classification rules can be used to achieve the classification of cached pages and the acquisition of cached pages; including the client's user information based on classification rules in advance. After intercepting a user request, the tag information is written into the message header; and the same classification rule is written in the response message returned by the source server to the cache server, so that the cache server performs cache classification based on the same classification rule.

Based on FIG. 1, a cache server classification method shown in FIG. 2 is described below with the cache server as an execution subject. The method may include the following steps:

Step 310: The cache server sends a page cache request message to the source server.

Step 320: Receive a response packet returned by the source server, and obtain a classification field in a packet header of the response packet; wherein the classification field is written by the source server in a packet header of the response packet Enter the custom field under the header field;

Step 330: Classify and cache the message content of the response message according to the classification field.

In an embodiment, the performing a class buffer in the response message according to the classification field specifically includes:

Calculating a field value of the classification field under the page content according to the page content;

Classify the cached page into a corresponding category according to the field value of the classification field.

In an embodiment, the method further includes:

The classification field is sent to the client as a classification rule.

In an embodiment, the header field includes a Vary field;

The custom field written in the header of the response packet under the header field specifically includes:

Write a custom field under the Vary field in the header of the response message.

In one embodiment, the custom field is a user information field.

In an embodiment, the user information field includes a percentage uniquely identified by the user;

The calculating the value of the classification field under the page content according to the page content specifically includes:

Calculating, according to the unique identifier of the user, a percentage of the unique identifier of the user in the total user group;

The percentage is used as the field value of the classification field.

Based on FIG. 1, the following describes a method for obtaining a cached page shown in FIG. 3 with a client as an execution subject. The method may include the following steps:

Step 410: The client intercepts a request message for page acquisition initiated by the user;

Step 420: Write the marking information of the user into a header of the request message; the marking information includes a classification field and a field value;

Step 430: Forward the processed request message to a cache server, so that the cache server queries the page content of the corresponding category according to the classification field and the field value;

Step 440: Accept the page content returned by the cache server.

In an embodiment, in the pre-processing stage, the method further includes:

Receiving, by the client, a classification rule issued by a cache server, where the classification rule is a classification field used by the cache server to classify cache pages;

Mark the user according to the classification rule to obtain the user's marking information.

In an embodiment, the classification field in the marking information includes a percentage uniquely identified by the user;

The method of marking the user according to the classification rule to obtain the marking information of the user specifically includes:

Use the percentage as the field value in the marking information.

In an embodiment, the writing the user's marking information into a header of the request message specifically includes:

And writing the user's marking information into a header of the request message in the form of a Vary field.

It is worth mentioning that when the cache server cannot query the corresponding page content, the foregoing steps 310-330 are performed, and the content of the response message is returned to the client.

Corresponding to the foregoing embodiment of a method for classifying a cache page, this specification also provides an embodiment of a device for classifying a cache page. The device embodiments may be implemented by software, or may be implemented by hardware or a combination of software and hardware. Taking software implementation as an example, as a device in a logical sense, it is formed by reading the corresponding computer business program instructions in the non-volatile memory into the memory through the processor of the device in which it is located. In terms of hardware, as shown in FIG. 4, it is a hardware structure diagram of the device where the classification device of the cache page of this specification is located, except for the processor, network interface, memory, and non-volatile memory shown in FIG. 4. In the embodiment, the device where the device is located usually includes actual functions according to the classification of the cache page, and may also include other hardware, which will not be described again.

Please refer to FIG. 5, which is a block diagram of a device for classifying a cache page according to an embodiment of the specification. The device corresponds to the embodiment shown in FIG. 2.

A sending unit 510, the cache server sends a page cache request message to the source server;

The obtaining unit 520 receives a response packet returned by the source server, and obtains a classification field in a packet header of the response packet; wherein the classification field is a packet header of the response packet of the source server Write a custom field under the header field;

The classification unit 530 performs classification buffering on the message content of the response message according to the classification field.

In an embodiment, the classification unit 530 specifically includes:

A cache subunit, which caches the page content corresponding to the message content of the response message;

A calculation subunit, calculating a field value of the classification field under the page content according to the page content;

The classification subunit classifies the cached page into a corresponding category according to a field value of the classification field.

In an embodiment, the apparatus further includes:

The issuing unit sends the classification field to the client as a classification rule.

In an embodiment, the header field includes a Vary field;

In one embodiment, the custom field is a user information field.

The calculation subunit specifically includes:

The percentage is used as the field value of the classification field.

Corresponding to the foregoing embodiment of the method for acquiring a cached page, this specification also provides an embodiment of an apparatus for acquiring a cached page. The device embodiments may be implemented by software, or may be implemented by hardware or a combination of software and hardware. Taking software implementation as an example, as a device in a logical sense, it is formed by reading the corresponding computer business program instructions in the non-volatile memory into the memory through the processor of the device in which it is located. In terms of hardware, as shown in FIG. 6, it is a hardware structure diagram of the device where the obtaining device of the cache page of this specification is located, except for the processor, network interface, memory, and non-volatile memory shown in FIG. 6. In the embodiment, the device where the device is located usually acquires actual functions according to the cached page, and may also include other hardware, which will not be described again.

Please refer to FIG. 7, which is a block diagram of an apparatus for acquiring a cache page according to an embodiment of the present specification. The apparatus corresponds to the embodiment shown in FIG. 3. The apparatus includes:

The intercepting unit 610, the client intercepts a request message for page acquisition initiated by a user;

The writing unit 620 writes the marking information of the user into a header of the request message; the marking information includes a classification field and a field value;

A forwarding unit 630, which forwards the processed request message to a cache server; so that the cache server queries the page content of the corresponding category according to the classification field and the field value;

The receiving unit 640 accepts the page content returned by the cache server.

In an embodiment, in the pre-processing stage, the apparatus further includes:

A receiving subunit, receiving a classification rule issued by a cache server, where the classification rule is a classification field used by the cache server when classifying a cache page;

The marking subunit marks the user according to the classification rule to obtain the user's marking information.

The marking subunit specifically includes:

Use the percentage as the field value in the marking information.

In an embodiment, the writing unit 620 specifically includes:

The system, device, module, or unit described in the foregoing embodiments may be specifically implemented by a computer chip or entity, or a product with a certain function. A typical implementation device is a computer, and the specific form of the computer may be a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email sending and receiving device, and a game control Desk, tablet computer, wearable device, or a combination of any of these devices.

For details about the implementation process of the functions and functions of the units in the foregoing device, see the implementation process of the corresponding steps in the foregoing method for details, and details are not described herein again.

As for the device embodiment, since it basically corresponds to the method embodiment, the relevant part may refer to the description of the method embodiment. The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, may be located One place, or it can be distributed across multiple network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution in this specification. Those of ordinary skill in the art can understand and implement without creative efforts.

The above Figure 5 describes the internal functional modules and structure of the data aggregation device. The substantial execution body may be an electronic device, including:

processor;

Memory for storing processor-executable instructions;

The processor is configured to:

The cache server sends a page cache request message to the source server;

Optionally, the classifying and buffering the message of the response message according to the classification field specifically includes:

Optional, also includes:

The classification field is sent to the client as a classification rule.

Optionally, the header field includes a Vary field;

Optionally, the custom field is a user information field.

Optionally, the user information field includes a percentage uniquely identified by the user;

The percentage is used as the field value of the classification field.

The above Figure 7 describes the internal functional modules and structure of the data aggregation device. The substantial execution body can be an electronic device, including:

processor;

Memory for storing processor-executable instructions;

The processor is configured to:

Accept the page content returned by the cache server.

Optionally, during the preprocessing phase, it also includes:

Receiving a classification rule issued by a cache server, where the classification rule is a classification field used by the cache server when classifying cache pages;

Optionally, the classification field in the marking information includes a percentage uniquely identified by the user;

Use the percentage as the field value in the marking information.

Optionally, the writing the user's marking information into a header of the request message specifically includes:

In the above embodiment of the electronic device, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, CPU for short), or other general-purpose processors, digital signal processors (English: Digital Signal Processor) , Referred to as DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as ASIC), etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the foregoing memory may be a read-only memory (English: read-only memory (abbreviation: ROM)), a random access memory (English : Random access memory (abbreviation: RAM), flash memory, hard disk or solid state hard disk. The steps of the method disclosed in combination with the embodiments of the present invention may be directly implemented by a hardware processor, or may be performed by a combination of hardware and software modules in the processor.

Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiment of the electronic device, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant parts, refer to the description of the method embodiment.

Those skilled in the art will readily contemplate other embodiments of the present specification after considering the specification and practicing the invention disclosed herein. This description is intended to cover any variations, uses, or adaptations of this specification. These modifications, uses, or adaptations follow the general principles of this specification and include the common general knowledge or conventional technical means in the technical field not disclosed in this specification. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It should be understood that this description is not limited to the precise structure that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of this description is limited only by the following claims.

Claims

A method for classifying cached pages, the method includes:

The cache server sends a page cache request message to the source server;

Receive a response message returned by the source server, and obtain a classification field in a message header of the response message; wherein the classification field is a header written by the source server in a message header of the response message Custom fields under fields;

Classify and buffer the message content of the response message according to the classification field.
The method according to claim 1, wherein the classifying and buffering the message of the response message according to the classification field comprises:

Buffering the page content corresponding to the message content of the response message;

Calculating a field value of the classification field under the page content according to the page content;

Classify the cached page into a corresponding category according to the field value of the classification field.
The method according to claim 1, further comprising:

The classification field is sent to the client as a classification rule.
The method according to claim 1, wherein the header field comprises a Vary field;

The custom field written in the header of the response packet under the header field specifically includes:

Write a custom field under the Vary field in the header of the response message.
The method according to claim 1 or 2, wherein the custom field is a user information field.
The method according to claim 5, wherein the user information field comprises a percentage uniquely identified by the user;

The calculating the value of the classification field under the page content according to the page content specifically includes:

Calculating, according to the unique identifier of the user, a percentage of the unique identifier of the user in the total user group;

The percentage is used as the field value of the classification field.
A method for acquiring a cached page, the method includes:

The client intercepts the request message of the page acquisition initiated by the user;

Write the user's marking information into the header of the request message; the marking information includes a classification field and a field value;

Forward the processed request message to a cache server; so that the cache server queries the page content of the corresponding category according to the classification field and field value;

Accept the page content returned by the cache server.
The method according to claim 7, further comprising:

Receiving a classification rule issued by a cache server, where the classification rule is a classification field used by the cache server to classify cache pages;

Mark the user according to the classification rule to obtain the user's marking information.
The method according to claim 8, wherein the classification field in the marking information comprises a percentage uniquely identified by the user;

The method of marking the user according to the classification rule to obtain the marking information of the user specifically includes:

Calculating, according to the unique identifier of the user, a percentage of the unique identifier of the user in the total user group;

Use the percentage as the field value in the marking information.
The method according to claim 7, wherein the writing the user's marking information into a header of the request message specifically comprises:

And writing the user's marking information into a header of the request message in the form of a Vary field.
A device for classifying cache pages, the device includes:

A sending unit, the cache server sends a page cache request message to the source server;

The obtaining unit receives a response message returned by the source server, and obtains a classification field in a message header of the response message, where the classification field is written by the source server in a message header of the response message Enter the custom field under the header field;

The classification unit buffers the content of the response message according to the classification field.
An apparatus for acquiring a cached page, the apparatus includes:

Interception unit, the client intercepts the request message of the page acquisition initiated by the user;

A writing unit that writes the user's marking information into a header of the request message; the marking information includes a classification field and a field value;

A forwarding unit, which forwards the processed request message to a cache server; so that the cache server queries the page content of the corresponding category according to the classification field and the field value;

The receiving unit accepts the page content returned by the cache server.
An electronic device includes:

processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured as the method according to any one of claims 1-6.
An electronic device includes:

processor;

Memory for storing processor-executable instructions;

Wherein, the processor is configured as the method according to any one of claims 7-10.