WO2022143065A1

WO2022143065A1 - Database probing method and apparatus

Info

Publication number: WO2022143065A1
Application number: PCT/CN2021/136568
Authority: WO
Inventors: 王鹏; 董俊峰; 强群力; 刘超千; 赵彤; 周欢; 陈瑛绮; 余星; 韦鹏程; 孟令银; 朱绍辉; 陈飞; 姚文龙
Original assignee: 网联清算有限公司
Priority date: 2020-12-28
Filing date: 2021-12-08
Publication date: 2022-07-07
Also published as: CN114691640A

Abstract

A database probing method and apparatus. The method comprises: acquiring a probing request of a current application server (201); according to the probing request, sending a probing modification instruction to a preset probing table of a target database, so that the target database updates a target historical probing record according to the probing modification instruction (202); and according to the update status of the target historical probing record in the target database, determining the state of the target database (203), wherein the target database is a database corresponding to the current application server, and the target historical probing record is a historical probing record corresponding to the current application server in the preset probing table. By means of presetting a probing table in the target database, and determining whether a write operation can be performed on the probing table, it is determined whether the target database is in a normal state, and reasonable detection is performed on the availability of the target database, thereby improving the accuracy of a database probing result.

Description

Database detection method and device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Chinese patent application filed on December 28, 2020 with the application number 202011596870.1 and the invention titled "A method and device for database detection activation", the entire contents of which are incorporated herein by reference middle.

technical field

The invention relates to the field of databases, in particular to a method and device for detecting activation of a database.

Background technique

With the development of network technology, databases have been widely used in various industries. Among them, in the process of data transmission between the application server and the database, in order to ensure that the business data can be completely stored in the database, before data transmission, the database corresponding to the application server needs to be probed to determine the database. availability.

In the prior art, the database detection result is usually determined according to the feedback of the database to the query instruction. However, in the case of failure of the primary database in the database, the execution result of the query command can still be fed back based on the standby database, resulting in lower accuracy of the database probing result.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is to overcome the defect of low accuracy of the database detection results in the prior art, thereby providing a database detection method and device.

A first aspect of the present application provides a database detection method, which is applied to a database detection device, and the method includes:

Get the probe request of the current application server;

Send a detection activity modification instruction to a preset detection activity table of the target database according to the detection activity request, so that the target database updates the target historical detection activity record according to the detection activity modification instruction;

Determine the state of the target database according to the update of the target historical detection record by the target database;

The target database is a database corresponding to the current application server, and the target historical detection record is a historical detection record corresponding to the current application server in a preset detection table.

Optionally, determining the status of the target database according to the update of the target historical detection record by the target database, including:

Judging whether the historical detection record of the target is successfully updated;

In the case that the historical detection record of the target is successfully updated, it is determined that the target database is in a normal state.

Optionally, the method further includes:

In the case that the update of the historical detection record of the target fails, it is determined that the target database is in an abnormal state.

Optionally, the target historical detection record includes: the historical sending time corresponding to the historical detection and modification instruction;

Then, before determining the state of the target database according to the update situation of the target historical detection record of the target database, the method further includes:

Determine whether the historical sending time is changed to the sending time corresponding to the detection and modification instruction;

In the case that the historical sending time is changed to the sending time corresponding to the probing modification instruction, it is determined that the target historical probing record is updated successfully.

Optionally, the method further includes:

In the case that the historical sending time is not changed, it is determined that the update of the historical detection record of the target has failed.

Optionally, before obtaining the detection request of the current application server, the method further includes:

Obtain the number of transaction failures between the current application server and the target database;

Judging whether the number of transaction failures is greater than a preset number of failures threshold;

In the case that the number of transaction failures is greater than the preset failure number threshold, after a preset time interval, determine whether the target database is offline;

The acquisition of the active detection request of the current application server is specifically:

In the case that the target database is not offline, the probe request is obtained.

A second aspect of the present application provides a database detection method, which is applied to a target database, and the method includes:

Obtain the detection and modification instructions corresponding to the current application server;

According to the detection activity modification instruction, update the target historical detection activity record to obtain the updated target historical detection activity record;

Wherein, the target historical detection record is the historical detection record corresponding to the current application server in the preset detection table.

Optionally, updating the target historical detection record according to the detection modification instruction, including:

obtaining the sending time of the detection and modification instruction;

Update the historical sending time in the target historical detection record to the sending time of the detection and modification instruction;

The historical sending time is the sending time of the historical detection and modification instruction.

A third aspect of the present application provides a database detection device, comprising: an acquisition module, a detection module and a determination module;

The obtaining module is used to obtain the active detection request of the current application server;

The detection module is configured to send a detection modification instruction to a preset detection table of the target database according to the detection request, so that the target database can perform the detection and activation record of the target according to the detection modification instruction. renew;

The determining module is configured to determine the state of the target database according to the update status of the target historical detection record of the target database;

Optionally, the determining module is specifically used for:

Optionally, the determining module is further used for:

Then the determining module is also used for:

Optionally, the determining module is further used for:

In the case that the historical transmission time is not changed, it is determined that the update of the historical detection record of the target has failed.

Optionally, the obtaining module is further used for:

The acquisition module is specifically used for:

A fourth aspect of the present application provides an electronic device, including: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes the computer-implemented instructions stored in the memory to cause the at least one processor to perform the methods described above in the first aspect and various possible designs of the first aspect, or the second aspect and Various possible designs of the second aspect described the method.

A fifth aspect of the present application provides a storage medium containing computer-executable instructions, when executed by a computer processor, the computer-executable instructions are used to perform the above first aspect and various possible designs of the first aspect. The method described, or the method described in the second aspect and various possible designs of the second aspect.

The technical solution of the present application has the following advantages:

The database detection method and device provided by the present application obtain the detection request of the current application server; send detection modification instructions to the preset detection table of the target database according to the detection request, so that the target database can be modified according to the detection request. The detection modification instruction is used to update the target historical detection record; the state of the target database is determined according to the update of the target historical detection record by the target database; wherein, the target database is the current The database corresponding to the application server, where the target historical detection record is the historical detection record corresponding to the current application server in the preset detection table. The database detection method provided by the above scheme, by presetting a detection table in the target database, and judging whether a write operation can be performed on the detection table, that is, judging whether a write operation can be performed on the target database, and then determine whether the target database is In the normal state, the availability of the target database is reasonably detected, which improves the accuracy of the database detection results.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

1 is a schematic structural diagram of a database activation system based on an embodiment of the application;

2 is a schematic structural diagram of another database activation system based on an embodiment of the application;

3 is a schematic flowchart of a database detection method according to an embodiment of the present application;

4 is a schematic flowchart of another database detection method provided in an embodiment of the present application;

5 is a schematic flowchart of yet another database detection method provided by an embodiment of the present application;

6 is a schematic structural diagram of a database activation device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

specific embodiment

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the prior art, the database is usually probed based on a database query instruction (for example, a select query statement). If the database can normally feed back the instruction execution result, it is determined that the database is normal and data interaction with the application server can be performed. If the database cannot feed back the instruction execution result, it is determined that the database is abnormal, and the application server is switched to another standby database for data interaction. However, at present, in order to ensure the consistency of the data in the main database and the standby database, the semi-synchronous standby database is usually used as the standby database, so when the main database is probed, the data manipulation language function of the main database may appear (Data Manipulation Language, DML for short) is blocked, but the execution result of the query command can still be fed back. For example, there is a network outage between the main and standby databases, but due to the semi-synchronization principle, even if the DML is blocked, the main database can still feed back the execution result of the query command. That is to say, the existing database detection technology only detects the readable state of the database, so that the availability of the database cannot be reasonably detected.

In view of the above problems, the database detection method and device provided by the embodiments of the present application obtain the detection request of the current application server; Update the target historical detection record according to the detection modification instruction; determine the status of the target database according to the update of the target database to the target historical detection record; wherein, the target database is the database corresponding to the current application server, and the target historical detection The record is the historical probe record corresponding to the current application server in the preset probe table. The database detection method provided by the above scheme, by presetting a detection table in the target database, and judging whether a write operation can be performed on the detection table, that is, judging whether a write operation can be performed on the target database, and then determine whether the target database is In the normal state, the availability of the target database is reasonably detected, which improves the accuracy of the database detection results.

The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the structure of the database detection system on which this application is based is explained:

The database activation method and device provided by the embodiments of the present application are suitable for performing activation detection processing on a target database, so as to detect the availability of the target database. As shown in FIG. 1 , it is a schematic structural diagram of a database activation system based on an embodiment of the application, which mainly includes multiple databases and multiple application servers. When the target database corresponding to the current application server in FIG. 1 fails, The current application server will switch the transaction to other databases (eg database 1, database 2, database n, etc.). In the process of data transaction with other databases, the current application server can use the database activation device to probe the target database, and then determine whether the transaction can be switched back.

Wherein, as shown in FIG. 2 , it is a schematic structural diagram of another database activation system based on the embodiment of the application, which mainly includes a target database, a database activation device for detecting activation of the target database, and a database activation device for sending detection The current application server for live requests. Specifically, after receiving the detection request sent by the current application server, the database detection device sends a detection modification instruction to the target database to modify the detection table in the target database accordingly. Update the status to determine whether the status of the target database is normal. When it is determined that the target database is in a normal state, the database detection device sends a corresponding detection result to the current application server, and the current application server determines to perform transaction switchback according to the detection result, and performs data transaction based on the target database.

The embodiments of the present application provide a database detection method, which is used to solve the defect of low accuracy of database detection results in the prior art. The execution body of the embodiment of the present application is a database activation device, and the database activation device is deployed on electronic devices, such as servers, desktop computers, notebook computers, tablet computers, and other electronic devices that can be used to detect activation of databases.

As shown in FIG. 3 , a schematic flowchart of a database detection method provided in an embodiment of the present application, the method includes:

Step 201, obtaining a detection request of the current application server;

It should be noted that, in the case where the database activation method provided in the embodiment of the present application is applied to a semi-synchronous database, the target database is used to control the main database under the semi-synchronous configuration to wait for the standby database to return an Acknowledgement (ACK for short) report. The parameter of the time of the text: rpl_semi_sync_master_timeout, the initial value is 10000, and the unit is milliseconds. In order to ensure the data consistency of the active and standby databases, it is necessary to adjust this parameter to an infinite value to prevent the active database from switching to the asynchronous standby database due to the timeout of waiting time.

Specifically, in one embodiment, in order to reduce unnecessary database probing processing, the load of the target database is reduced. You can obtain the number of transaction failures between the current application server and the target database; determine whether the number of transaction failures is greater than the preset number of failures threshold; if the number of transaction failures is greater than the preset number of failures threshold, after a preset time interval, determine whether Whether the target database is offline; if the target database is not offline, obtain a probe request.

Exemplarily, if the preset number of failures threshold is 20 and the preset time interval is 20 seconds, then when the number of transaction failures between the current application server and the target database reaches 20, the current application server sends new transaction data. Store it in another database. After 20 seconds, determine whether the target database has been offline. If it has not been offline within 20 seconds, it can be preliminarily determined that the fault of the target database has been repaired. Among them, in order to further determine whether the fault of the target database has been completely eliminated to ensure the availability of the target database, the detection request of the current application server is obtained, and the detection of the target database is performed to detect the availability of the target database.

It needs to be explained that the offline processing of the current database can be realized based on the business automatic isolation program deployed in the main database and the standby database. The business automatic isolation program is a set of independent scripts used to control the mutual judgment of the main and standby databases. Check whether the port of the other party is normal. If it is determined that the port of the other party is in an abnormal state, perform database offline processing. In order to avoid the application server sending transaction data to the database in the case of abnormality, resulting in the failure of a large number of data transactions.

Step 202, sending a detection and activation modification instruction to a preset detection activation table of the target database according to the detection activation request, so that the target database updates the target historical detection activation record according to the detection activation modification instruction;

The preset detection table is used to store historical detection records corresponding to each application server connected to the target database, and the detection modification instruction is used to update the target historical detection records corresponding to the current application server in the preset detection table.

It should be noted that, in order to ensure the security of the transaction data in the target database and prevent the transaction data in the target database from being damaged due to the detection operation, the above-mentioned preset detection table can be established in the target database.

Exemplarily, the embodiments of the present application provide an exemplary detection table structure:

Among them, since a target database can provide data transaction services for multiple application servers, if a corresponding preset detection table is established for each application server, it will occupy a large amount of storage resources of the target database. To store pressure, it is possible to establish a preset detection table shared by all application servers. However, in extreme scenarios, such as multiple application servers sending active detection requests at the same time, lock waiting may occur, which will also affect the performance of the target database. Therefore, in order to ensure the performance of the target database and avoid the existence of hot-spot rows, each application server can be used to perform detection in a way that each application server corresponds to a row, that is, the preset detection table can be managed by branch. For example, the above-mentioned "clientip" corresponds to the IP list of the application server on the line, and is marked in the preset detection table in a combined manner. In order to ensure that the identifiers of each application server are not duplicated and to avoid the failure of database detection, the IP address of the application server can be used as a marker. For example, the "clientip" field value of 192.168.1.1 corresponding to the target database is 19216811. The IP addresses of the application servers in the same local area network are different.

Step 203: Determine the status of the target database according to the update status of the target historical detection record of the target database.

Specifically, after the target database receives the detection modification instruction and executes the detection modification instruction, under the condition that the state of the target database is the normal state, the target historical detection record corresponding to the current application server Updates are made by modifying the instructions.

On the basis of the above-mentioned embodiment, in order to further improve the accuracy of the detection result of the target database and determine the availability of the target database, as shown in FIG. An implementable manner, on the basis of the above-mentioned embodiment, in one embodiment, according to the update situation of the target historical detection activity record of the target database, to determine the status of the database, including:

Step 2031, judging whether the target history detection record is updated successfully;

Step 2032, in the case that the target historical detection record is successfully updated, determine that the target database is in a normal state.

Correspondingly, in an embodiment, in the case that the update of the historical detection record of the target fails, it is determined that the target database is in an abnormal state.

It should be noted that the target historical detection record may include the historical sending time corresponding to the historical detection modification instruction.

Exemplarily, an update instruction (for example, an update update statement) may be used to update the historical detection record in the target database, so as to determine whether the target database is currently in a blocking state. Wherein, when the target database is in a blocked state, the DML of the target database is blocked, so that the historical detection record of the target cannot be updated. Therefore, it can be determined that the target database is abnormal, that is, the target database is in an abnormal state. On the contrary, it can be determined that the target database is in a normal state and can be used for data transactions, and the current application server can perform a switchback of transaction data.

Specifically, in one embodiment, in order to avoid repetition of the execution results of the detection modification instruction, that is, the updated target historical detection record is the same as the original target historical detection record, it is impossible to determine whether the target historical detection record is updated. If it is successful, it will affect the accuracy of the detection results.

Therefore, in view of the above problems, it is possible to determine whether the historical sending time is changed to the sending time corresponding to the detection and activation modification instruction; if the historical sending time is changed to the sending time corresponding to the detection and activation modification instruction, it is determined that the historical detection and activation record of the target has been successfully updated. . Correspondingly, if the historical sending time is not changed, it is determined that the update of the historical detection activity record of the target fails.

Among them, the historical sending time is the time when the detection and modification instructions are sent before the current time, that is, the historical sending time of the historical detection and modification instructions. The detection results of the detection modification instructions are distinguished.

Exemplarily, the initial value of "update_time" in the preset detection table is the time when the preset detection table is successfully established to the database, which can be used to record the historical sending time. The detection modification instruction can be: update is_online set update_time=now() where clientip=`current application server IP address`, which is used to modify "update_time" in the preset detection table to the current time. If it is determined that the "update_time" in the preset detection table corresponding to the current application server has been modified to the corresponding detection command sending time, it is determined that the historical detection record of the target has been updated successfully; otherwise, it is determined that the historical detection record of the target has been updated. fail.

In a database detection method provided by an embodiment of the present application, a detection request of a current application server is obtained; a detection modification instruction is sent to a preset detection table of a target database according to the detection request, so that the target database can be modified according to the detection activation instruction , update the target historical detection record; determine the state of the target database according to the update of the target database to the target historical detection record; wherein, the target database is the database corresponding to the current application server, and the target historical detection record is the current application server The corresponding historical exploration records in the preset exploration table. The database detection method provided by the above scheme, by presetting a detection table in the target database, and judging whether a write operation can be performed on the detection table, that is, judging whether a write operation can be performed on the target database, and then determine whether the target database is In the normal state, the availability of the target database is reasonably detected, which improves the accuracy of the database detection results. In addition, the historical sending time in the target historical detection record and the current sending time of the detection modification instruction are used as the basis for judging whether it is updated, so as to avoid repetition and further improve the accuracy of the database detection result.

The embodiment of the present application provides a database detection method, which is used to solve the defect of low accuracy of database detection results in the prior art. The execution body of the embodiment of the present application is the target database provided by the above embodiment.

As shown in FIG. 5, it is a schematic flowchart of still another database detection method provided by the embodiment of the present application, and the method includes:

Step 401, obtaining a detection and modification instruction corresponding to the current application server;

Step 402 , according to the detection modification instruction, update the historical detection record of the target to obtain the updated historical detection record of the target.

The target historical detection record is the historical detection record corresponding to the current application server in the preset detection table.

Specifically, in one embodiment, updating the target historical detection activity record according to the detection activity modification instruction includes:

Step 4021, obtaining the sending time of the detection and modification instruction;

Step 4022: Update the historical sending time in the historical detection record of the target to the sending time of the detection modification instruction.

The database activation method provided by the embodiment of the present application corresponds to the database activation method performed by the database activation device provided in the above-mentioned embodiment, and the implementation manner and principle are the same, and are not described again.

The embodiments of the present application provide a database detection device, which is used to solve the defect of low accuracy of database detection results in the prior art. As shown in FIG. 6 , which is a schematic structural diagram of a database detection device provided in an embodiment of the present application, the device 50 includes an acquisition module 501 , a detection module 502 , and a determination module 503 .

Wherein, the acquiring module is used to acquire the detection request of the current application server; the detection module is used to send the detection modification instruction to the preset detection table of the target database according to the detection request, so that the target database can modify the instruction according to the detection activation , to update the target historical detection record; the determining module is used to determine the status of the target database according to the update of the target database to the target historical detection record; wherein, the target database is the database corresponding to the current application server, and the target historical detection The record is the historical probe record corresponding to the current application server in the preset probe table.

Specifically, in an embodiment, the determining module is specifically used for:

Determine whether the target's historical detection record is successfully updated;

Specifically, in an embodiment, the determining module is further configured to:

In the case that the update of the target historical detection record fails, it is determined that the target database is in an abnormal state.

Specifically, in one embodiment, the target historical detection record includes: the historical sending time corresponding to the historical detection modification instruction;

then determines the module, and is also used to:

Determine whether the historical sending time has been changed to the sending time corresponding to the activation modification instruction;

If the historical sending time is changed to the sending time corresponding to the probing modification instruction, it is determined that the target historical probing record is updated successfully.

In the case that the historical sending time has not changed, it is determined that the update of the historical detection activity record of the target fails.

Specifically, in one embodiment, the acquisition module is further used for:

Get the number of transaction failures between the current application server and the target database;

Determine whether the number of transaction failures is greater than the preset number of failures threshold;

In the case that the number of transaction failures is greater than the preset number of failures threshold, after a preset time interval, determine whether the target database is offline;

Then get the module, specifically for:

Obtain a probe request when the target database is not offline.

The database activation device provided in the embodiment of the present application is used to execute the database activation method provided in the above-mentioned embodiment, and the implementation manner is the same as the principle, which will not be repeated.

The embodiments of the present application further provide an electronic device for executing the methods provided by the foregoing embodiments.

As shown in FIG. 7 , it is a schematic structural diagram of an electronic device provided in an embodiment of the present application. The electronic device 60 includes: at least one processor 61 and a memory 62;

Wherein, the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the instructions of the method according to any one of the preceding embodiments.

An electronic device provided by an embodiment of the present application is used to execute the database activation method provided by the above-mentioned embodiment, and the implementation manner is the same as the principle, which will not be repeated.

Embodiments of the present application provide a storage medium containing computer-executable instructions, where the storage medium stores computer-executed instructions, and when the processor executes the computer-executed instructions, the method provided in any of the above embodiments is implemented.

The storage medium containing the computer-executable instructions of the embodiments of the present application can be used to store the computer-executable instructions of the database detection method provided in the foregoing embodiments.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims

A database detection method, applied to a database detection device, wherein the method comprises:

Get the probe request of the current application server;

Send a detection activity modification instruction to a preset detection activity table of the target database according to the detection activity request, so that the target database updates the target historical detection activity record according to the detection activity modification instruction;

Determine the state of the target database according to the update of the target historical detection record by the target database;

The target database is a database corresponding to the current application server, and the target historical detection record is a historical detection record corresponding to the current application server in a preset detection table.
The database detection method according to claim 1, wherein the determining the status of the target database according to the update of the target historical detection record by the target database comprises:

Judging whether the historical detection record of the target is successfully updated;

In the case that the historical detection record of the target is successfully updated, determine that the target database is in a normal state;

In the case that the update of the historical detection record of the target fails, it is determined that the target database is in an abnormal state.
The database detection method according to claim 2, wherein the target historical detection record includes: the historical sending time corresponding to the historical detection modification instruction;

Before determining the state of the target database according to the update status of the target historical detection record of the target database, the method further includes:

Determine whether the historical sending time is changed to the sending time corresponding to the detection and modification instruction;

In the case where the historical sending time is changed to the sending time corresponding to the probing modification instruction, it is determined that the target historical probing record is updated successfully;

In the case that the historical sending time is not changed, it is determined that the update of the historical detection record of the target has failed.
The database detection method according to claim 1, wherein, before acquiring the detection request of the current application server, the method further comprises:

Obtain the number of transaction failures between the current application server and the target database;

Judging whether the number of transaction failures is greater than a preset number of failures threshold;

In the case that the number of transaction failures is greater than the preset number of failures threshold, after a preset time interval, determine whether the target database is offline;

The acquisition of the active detection request of the current application server is specifically:

In the case that the target database is not offline, the probe request is obtained.
The database detection method according to claim 1, wherein after determining the state of the target database according to the update of the target historical detection record by the target database, the method further comprises:

When it is determined that the state of the target database is a normal state, a corresponding detection result is sent to the current application server, so that the current application server performs transaction switchback according to the detection result.
A database detection method, applied to a target database, wherein the method comprises:

Obtain the detection modification instruction corresponding to the current application server sent by the database detection device;

According to the detection activity modification instruction, update the target historical detection activity record to obtain the updated target historical detection activity record;

sending the updated target historical detection record to the database detection device, so that the database detection device determines the state of the target database according to the updated target historical detection record;

The target historical detection record is the historical detection record corresponding to the current application server in the preset detection table.
The database detection method according to claim 6, wherein the updating the target historical detection record according to the detection modification instruction comprises:

obtaining the sending time of the detection and modification instruction;

Update the historical sending time in the target historical detection record to the sending time of the detection and modification instruction;

The historical sending time is the sending time of the historical detection and modification instruction.
A database detection device, wherein the device comprises: an acquisition module, a detection module and a determination module;

The obtaining module is used to obtain the active detection request of the current application server;

The detection module is configured to send a detection modification instruction to a preset detection table of the target database according to the detection request, so that the target database can perform the detection and activation record of the target according to the detection modification instruction. renew;

The determining module is configured to determine the state of the target database according to the update status of the target historical detection record of the target database;

Wherein, the target database is the database corresponding to the current application server, and the target historical detection record is the historical detection record corresponding to the current application server in the preset detection table.
A database detection system, wherein the system includes a database detection device, a target database and a current application server, the database detection device is used to execute the method according to any one of claims 1-5, the The target database is used to perform the method of claim 6 or 7.
An electronic device, wherein the electronic device includes: at least one processor and a memory;

the memory stores computer-executable instructions;

The at least one processor executes computer-implemented instructions stored in the memory to cause the at least one processor to perform the method of any one of claims 1-5, or the method of claim 6 or 7.
A storage medium containing computer-executable instructions, wherein the computer-executable instructions, when executed by a computer processor, are used to perform the method of any one of claims 1-5, or the method of claim 6 or 7. method described.