WO2018090703A1

WO2018090703A1 - Data storage and deletion method and apparatus

Info

Publication number: WO2018090703A1
Application number: PCT/CN2017/101547
Authority: WO
Inventors: 黄华东; 夏伟强; 王伟; 林起芊
Original assignee: 杭州海康威视数字技术股份有限公司
Priority date: 2016-11-15
Filing date: 2017-09-13
Publication date: 2018-05-24
Also published as: CN108073355B; CN108073355A

Abstract

A data storage and deletion method and apparatus, the data deletion method comprising: acquiring a data deletion instruction sent by a client, the data deletion instruction carrying first identification information of data to be deleted (S101); searching for a first correspondence relationship comprising the first identification information in a stored correspondence relationship (S102); determining whether the first identification information corresponds to target data content after the first correspondence relationship comprising the first identification information is found (S103); if yes, configuring the first identification information to be in a deleted state and notifying the client that the data to be deleted has been deleted (S104); and if no, deleting the first correspondence relationship comprising the first identification information, and notifying the client that the data to be deleted has been deleted (S105). While acquiring a probe request for data to be stored having the same data content as target data content of stored data, the method and apparatus do not repeatedly store the data content, but rather store the correspondence relationship between the data to be stored and the corresponding stored data, thereby saving local storage space, and saving the time spent in deleting data.

Description

Data storage and deletion method and device

The present application claims priority to Chinese Patent Application No. 201611032369.6, entitled "A Data Storage and Deletion Method and Apparatus", filed on November 15, 2016, the entire contents of in.

Technical field

The present application relates to the field of data storage technologies, and in particular, to a data storage and deletion method and apparatus.

Background technique

In order to avoid data loss, users are increasingly inclined to store data in the network side to avoid data loss or loss when the user's client is faulty or lost. For example, the data is stored in an object storage system, which is a simple storage system, which is particularly suitable for scenarios where data is stored for a long time and rarely modified. In addition, the object storage system also has elastic expansion properties. Therefore, the object storage system is more and more widely used in the fields of security monitoring and network disk. The object storage system can conveniently store data in various formats, such as pictures, video data, text documents and the like.

In the related art, when each user uploads data, the client where the user is located sends a detection request containing data to the data storage end, and the data storage terminal determines whether the local storage and the data are stored according to the verification information. When the data storage end determines that the target data is stored, the data storage end directly copies the data content corresponding to the target data, and stores a copy of the data content for the user who should upload the data. Further, the client is notified that the data storage of the client is successful; when the data storage terminal determines that the target data is not stored, the client is notified to upload the data. Subsequently, when the data storage end obtains a request for deleting the stored data corresponding to the client where the user is located, the related art needs to delete the data content of the stored data.

It can be seen that in the related art, the data storage end stores data multiple times, that is, N users upload the same data, and the data storage end stores the data N times, which causes waste of the storage space of the data storage end, and when the data storage end is used. When the stored data is deleted and the amount of data of the data content corresponding to the stored data is large, it takes a long time to delete the stored data.

Summary of the invention

The purpose of the embodiment of the present application is to provide a data storage and deletion method and device to save storage space on the data storage end. Further, when the data storage end deletes the stored data, the time taken to delete the stored data is reduced. The specific technical solutions are as follows:

In one aspect, the embodiment of the present application provides a data deletion method, where the method includes:

Obtaining a data deletion instruction sent by the client, where the data deletion instruction carries the first identification information of the data to be deleted;

Searching, in the stored correspondence, a first correspondence that includes the first identifier information, where the correspondence relationship is a correspondence between the identifier information of the data to be stored and the identifier information of the corresponding stored data, where the corresponding relationship is The stored data is data in which the corresponding data content is stored locally and is the same as the data content of the data to be stored, and the data to be stored is data in which the corresponding data content is to be stored locally;

After finding the first correspondence that includes the first identifier information, determining whether the first identifier information corresponds to the target data content;

If yes, the first identifier information is set to the deleted state, and the client is notified that the to-be-deleted data has been deleted;

If no, the first correspondence corresponding to the first identifier information is deleted, and the client is notified that the data to be deleted has been deleted.

Optionally, the step of setting the first identifier information to a deleted state includes:

Setting a deletion task corresponding to the target data content of the first identification information, and setting the first identification information to a deleted state;

The method further includes: checking the stored correspondence, and determining whether the first correspondence corresponding to the first identifier information still exists in the correspondence relationship;

When it is determined that there is no existence, the target data content is deleted in response to the deletion task.

Optionally, the method further includes:

When it is determined that the first identification information does not correspond to the target data content, according to the first corresponding Determining, by the first identifier information, second identifier information, where the second identifier information corresponds to the target data content;

Determining whether the second identification information has been set to a deleted state;

When it is determined that the second identifier information is not set to the deleted state, performing the step of deleting the first correspondence relationship that includes the first identifier information;

When it is determined that the second identifier information has been set to the deleted state, determining whether the second relationship corresponding to the second identifier information is included in the correspondence relationship other than the first correspondence relationship;

When it is determined that the second correspondence is included in the correspondence, the step of deleting the first correspondence that includes the first identifier information is performed;

When it is determined that the second correspondence is not included in the correspondence, the first correspondence that includes the first identifier information is deleted, and the target data content corresponding to the second identifier information is deleted.

Optionally, the method further includes:

When the first identifier information is not found in the stored correspondence, the target data content corresponding to the first identifier information is deleted.

In one aspect, the embodiment of the present application provides a data storage method, where the method includes:

Obtaining a probe request for the data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored;

Comparing the feature information of the to-be-stored data with the feature information of the locally stored data, and determining whether the target data content that is the same as the data content of the to-be-stored data is stored locally;

Obtaining fourth identification information of the target data content if the target data content is already stored;

And storing a correspondence between the third identifier information and the fourth identifier information, and notifying the client that the to-be-stored data is stored.

Optionally, the method further includes:

When the target data content is not stored, sending data upload information to the client, so that the client uploads the data content of the data to be stored;

Receiving and storing the data content of the data to be stored.

Optionally, the feature information includes verification information of the data to be stored, a data amount of the data to be stored, and a data content of a predetermined number of bits of the data to be stored;

The step of comparing the feature information of the data to be stored with the feature information of the locally stored data, and determining whether the target data content of the data content of the data to be stored is stored locally includes:

Comparing the check information of the data to be stored with the check information of the locally stored data, and comparing the data amount of the data to be stored with the data amount of the locally stored data, and the The data content of the predetermined number of bits of the stored data is compared with the data content of the predetermined number of bits of the locally stored data;

When the check information of the data to be stored matches the check information of the locally stored data, and the data amount of the data to be stored matches the data amount of the locally stored data, and the predetermined number of bits of the data to be stored When the data content matches the data content of the predetermined number of bits of the locally stored data, it is determined that the target data content identical to the data content of the data to be stored is locally stored.

In one aspect, the embodiment of the present application provides a data storage device, where the device includes:

a first obtaining module, configured to obtain a data deletion instruction sent by the client, where the data deletion instruction carries first identification information of the data to be deleted;

a first searching module, configured to search, in the stored correspondence, a first correspondence that includes the first identifier information, where the correspondence relationship is identifier information of data to be stored and identifier information of the corresponding stored data. Corresponding relationship, the corresponding stored data is data in which the corresponding data content is stored locally and is the same as the data content of the data to be stored, and the data to be stored is data corresponding to the data content to be stored locally. ;

a first determining module, configured to determine whether the first identifier information corresponds to the target data content after the first correspondence information that includes the first identifier information is found; if yes, trigger the setting module, if not, trigger the first Delete the module;

The setting module is configured to set the first identification information to a deleted state;

a first notification module, configured to notify the client that the data to be deleted has been deleted;

The first deleting module is configured to delete a first correspondence that includes the first identifier information;

The second notification module is configured to notify the client that the data to be deleted has been deleted.

Optionally, the setting module is configured to: set a deletion task corresponding to the target data content of the first identifier information, and set the first identifier information to a deleted state;

The device further includes: a second determining module and a second deleting module;

The second determining module is configured to check the stored correspondence, and determine whether the first correspondence corresponding to the first identifier information still exists in the corresponding relationship, and when it is determined that the corresponding relationship does not exist, triggering the first Second delete the module;

The second deleting module is configured to delete the target data content in response to the deleting task.

Optionally, the device further includes a determining module, a third determining module, a fourth determining module, and a third deleting module;

The determining module is configured to: when determining that the first identifier information does not correspond to the target data content, determine second identifier information corresponding to the first identifier information according to the first correspondence, the second identifier information Corresponding to the target data content;

The third determining module is configured to determine whether the second identifier information is set to the deleted state, and when the second identifier information is not set to the deleted state, triggering the first deleting module; When the second identifier information is set to the deleted state, the fourth determining module is triggered;

The fourth determining module is configured to determine, in addition to the first correspondence, whether the second correspondence corresponding to the second identifier information is included in the correspondence, and when determining that the correspondence includes the The second deletion module is triggered when the second correspondence is performed; and the third deletion module is triggered when it is determined that the second correspondence is not included in the correspondence;

The third deleting module is configured to delete the first correspondence that includes the first identifier information and delete the target data content corresponding to the second identifier information.

Optionally, the device further includes a fourth deletion module;

The fourth deleting module is configured to not find the first one in the stored correspondence relationship When the information is identified, the target data content corresponding to the first identification information is deleted.

On the other hand, an embodiment of the present application provides a data storage device, where the device includes:

a second obtaining module, configured to obtain a probe request for data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored;

The comparison determining module is configured to compare the feature information of the data to be stored with the feature information of the locally stored data, and determine whether the target data content that is the same as the data content of the data to be stored is stored locally;

a third obtaining module, configured to obtain fourth identification information of the target data content if the target data content is already stored;

And a storage notification module, configured to store a correspondence between the third identifier information and the fourth identifier information, and notify the client that the to-be-stored data has been stored.

Optionally, the device further includes a sending module and a receiving storage module;

The sending module is configured to send data uploading information to the client when the target data content is not stored, so that the client uploads the data content of the to-be-stored data;

The receiving storage module is configured to receive and store data content of the data to be stored.

The comparison determination module includes a comparison unit and a determination unit;

The comparison unit is configured to compare the verification information of the data to be stored with the verification information of the locally stored data, and perform the data amount of the data to be stored and the data amount of the locally stored data. Aligning, and comparing the data content of the predetermined number of bits of the data to be stored with the data content of the predetermined number of bits of the locally stored data;

The determining unit is configured to: when the check information of the data to be stored matches the check information of the locally stored data, and the data amount of the data to be stored matches the data amount of the locally stored data, and the When the data content of the predetermined number of bits of the data to be stored matches the data content of the predetermined number of bits of the locally stored data, it is determined that the same target as the data content of the data to be stored is locally stored. Data content.

On the other hand, an embodiment of the present application provides an electronic device, including a processor and a memory, where the memory is used to store a computer program;

The data deletion method provided by the embodiment of the present application is implemented when the processor is configured to execute a computer program stored in the memory.

On the other hand, the embodiment of the present application provides a computer program for being executed to perform the data deletion method provided by the embodiment of the present application.

On the other hand, the embodiment of the present application provides a storage medium for storing a computer program, and the computer program is executed to execute the data deletion method provided by the embodiment of the present application.

The data storage method provided by the embodiment of the present application is implemented when the processor is configured to execute a computer program stored in the memory.

On the other hand, the embodiment of the present application provides a computer program for being executed to execute the data storage method provided by the embodiment of the present application.

On the other hand, the embodiment of the present application provides a storage medium for storing a computer program, and the computer program is executed to execute the data storage method provided by the embodiment of the present application.

The data storage and deletion method and device provided by the embodiment of the present application, the data deletion method includes: obtaining a data deletion instruction that is sent by the client and carrying the first identification information of the data to be deleted, and in the stored correspondence, searching for the first identifier Corresponding relationship between the identifier information of the data to be stored and the identifier information of the corresponding stored data, where the corresponding stored data is stored locally and associated with the information The data of the data to be stored is the same data, and the data to be stored is the data to be stored in the local data; when the first correspondence corresponding to the first identification information is found, it is determined whether the first identification information corresponds to the target data. Content; if yes, the first identification information is set to the deleted state, and the client is notified The deleted data has been deleted; if not, the first correspondence corresponding to the first identification information is deleted, and the client is notified that the data to be deleted has been deleted. It can be seen that, when obtaining the probe request of the data to be stored that is the same as the target data content of the stored data, the data storage end does not repeatedly store the data content, but stores the correspondence between the data to be stored and the corresponding stored data. Therefore, the client can find the target data content according to the corresponding relationship, so as to save the local storage space, and when deleting the data, the correspondence relationship of the corresponding storage can be directly deleted, thereby saving the time consumed when deleting the data. Of course, implementing any of the products or methods of the present application necessarily does not necessarily require all of the advantages described above to be achieved at the same time.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings to be used in the embodiments or the related art description will be briefly described below. Obviously, the drawings in the following description are only Some embodiments of the application may also be used to obtain other figures from those of ordinary skill in the art without departing from the scope of the invention.

FIG. 1 is a schematic flowchart of a data deletion method according to an embodiment of the present application;

2 is another schematic flowchart of a data deletion method according to an embodiment of the present application;

FIG. 3 is another schematic flowchart of a data deletion method according to an embodiment of the present disclosure;

4 is another schematic flowchart of a data deletion method according to an embodiment of the present application;

FIG. 5 is a schematic flowchart of a data storage method according to an embodiment of the present application;

FIG. 6 is another schematic flowchart of a data storage method according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a data deletion apparatus according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a data storage device according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The embodiment of the present application provides a data storage and deletion method and device, so as to save local storage. Storage space, further, saves time spent deleting data.

The following is a description of a data deletion method provided by the embodiment of the present application. It can be understood that the data deletion method can be applied to the data storage end, wherein the data storage end stores the target data content, and the corresponding relationship corresponding to the target data content can be stored. When the client stores data to the data storage end, first sends a probe request for the data to be stored to the data storage end, and the data storage terminal detects that the target content of the data content of the data to be stored is locally stored according to the probe request. In the case of the data content, the data content of the data to be stored is not repeatedly stored, but the correspondence relationship between the data to be stored and the stored data corresponding to the target data content is stored. The correspondence relationship includes the identifier information of the data to be stored and the identifier information of the stored data. The identification information can uniquely determine the corresponding data. Subsequently, the client can read the target data content according to the correspondence.

As shown in FIG. 1 , the embodiment of the present application provides a data deletion method, which may include the following steps:

S101: Obtain a data deletion instruction sent by the client, where the data deletion instruction carries the first identification information of the data to be deleted;

The client sends a data deletion instruction carrying the first identification information of the data to be deleted to the data storage end, and the data storage terminal receives the data deletion instruction, and obtains the first identification information in the data deletion instruction by using a related technology, where the first The identifier information may be the file name of the data to be deleted or the corresponding path information to be stored, and the like, and the information of the data to be deleted may be uniquely determined.

S102: Search, in the stored correspondence, a first correspondence that includes the first identifier information.

The corresponding relationship is a correspondence between the identifier information of the data to be stored and the identifier information of the corresponding stored data; the corresponding stored data is data that the corresponding data content is stored locally and is the same as the data content of the data to be stored. That is, the corresponding data content is stored in the data storage end and is the same data as the data content of the data to be stored; the data to be stored is the data to be stored in the corresponding data content, that is, the corresponding data content is to be stored in the data storage. Data at the end.

That is, the corresponding relationship may be: a correspondence between the identification information of each first data and the identification information of the second data, wherein the data content corresponding to each of the first data and the data content corresponding to the second data The data content corresponding to the second data may be stored in the data storage end, and the data content corresponding to each of the first data may not be stored in the data storage end.

In the stored correspondence, the first correspondence information including the first identifier information is searched, and the first identifier information is matched with the identifier information in the corresponding relationship. When the matching succeeds, the corresponding relationship is determined to be included in the corresponding relationship. A first correspondence of the identification information, and vice versa, determining that the first correspondence that does not include the first identification information exists in the correspondence. After the matching is successful, a subsequent data deletion process is performed.

S103: After finding the first correspondence relationship that includes the first identifier information, determining whether the first identifier information corresponds to the target data content; if yes, executing S104, if not, executing S105;

S104: Set the first identification information to the deleted state, and notify the client that the data to be deleted has been deleted;

S105: Delete the first correspondence that includes the first identifier information, and notify the client that the data to be deleted has been deleted.

After the first correspondence corresponding to the first identifier information is found in the corresponding relationship, the first identifier information may be the identifier information corresponding to the target content data, or may not be the identifier information corresponding to the target content data. Whether the first identification information corresponds to the target data content. When the determination is yes, in order to avoid the correspondence corresponding to the target data content, the target data content cannot be read, and the target data content cannot be directly deleted at this time. The first identifier information is set to the deleted state, and the data to be deleted corresponding to the first identifier information of the client is notified to be deleted. When the determination is no, the first correspondence corresponding to the first identifier information may be deleted, and the data to be deleted corresponding to the first identifier information is notified to the client.

For example, the first identifier information may include: status information that identifies that the corresponding target data content only corresponds to the state of the client. For example, when the status information is “1”, the data content corresponding to the first identifier information may be identified. Corresponding to the above-mentioned client being in a storage state, that is, when the state information included in the first identifier information is “1”, only the client identifies that the data storage end stores the data content corresponding to the first identifier information; When the value of the first identifier information is set to "0", the target data content corresponding to the first identifier information is corresponding to the deleted state of the client, that is, when the state information included in the first identifier information is "0". Only the above client identifies that the data content corresponding to the first identification information has been deleted by the data storage end.

Or, for example, by adding a deleted identifier to the first identification information, The first identification information is set to a deleted state, wherein the deleted identification may be any pre-set string or symbol. For example, a “deleted” character string is added to the first identifier information to set the first identifier information to the deleted state, so that only the client identifies that the data content corresponding to the first identifier information has been deleted.

Applying the data deletion instruction of the first identifier information of the data to be deleted sent by the client, in the stored correspondence, the first correspondence corresponding to the first identifier information is found, where the corresponding relationship is to be And a corresponding relationship between the identifier information of the stored data and the identifier information of the corresponding stored data, where the corresponding stored data is data that is stored locally and is the same as the data content of the data to be stored, the to-be-stored The data is data corresponding to the data content to be stored locally; after the first correspondence corresponding to the first identifier information is found, determining whether the first identifier information corresponds to the target data content; if yes, setting the first identifier information to The status is deleted, and the client is notified that the data to be deleted has been deleted; if not, the first correspondence corresponding to the first identification information is deleted, and the client is notified that the data to be deleted has been deleted. It can be seen that, when obtaining the probe request of the data to be stored that is the same as the target data content of the stored data, the data storage end does not repeatedly store the data content, but stores the correspondence between the data to be stored and the corresponding stored data. Therefore, the client can find the target data content according to the corresponding relationship, so as to save the local storage space, and when deleting the data, the correspondence relationship of the corresponding storage can be directly deleted, thereby saving the time consumed when deleting the data.

As an implementation manner, based on FIG. 1, as shown in FIG. 2, the step of setting the first identification information to the deleted state may include:

S201: setting a deletion task corresponding to the target data content of the first identification information, and setting the first identification information to the deleted state;

A data deletion method provided by the embodiment of the present application may further include:

S202: Check the stored correspondence, and determine whether there is still a first correspondence corresponding to the first identifier information in the correspondence relationship;

S203: When it is determined that there is no existence, the target data content is deleted in response to the deletion task.

It can be understood that, when the first identifier information corresponds to the target data content, the first correspondence relationship including the first identifier information may exist one or more, and all the first correspondences are An identification information is set to the deleted state. And deleting the target data content corresponding to the first identification information, so that when it is determined that the first correspondence relationship including the first identification information does not exist locally, the target data content is deleted. After the deletion task is set for the target data content, whether the corresponding relationship including the first identification information still exists in the stored correspondence relationship may be checked periodically or irregularly. When a correspondence is made, the target data content is deleted.

That is to say, the above local can be local to the data storage end.

The first identifier information is set to the deleted state, not only to notify that the data to be deleted by the client is deleted, but also to obtain a probe request for storing data to be stored in the same manner as the target data content. The correspondence between the fifth identifier information of the data to be stored and the first identifier information is restricted. At this time, the data storage end notifies the corresponding client to upload the data content of the data to be stored corresponding to the fifth identifier information, and stores the data content.

For example, the data storage end stores a corresponding relationship, as shown in Table 1.

Table 1

A-BA-B
C-BC-B
D-BD-B
E-BE-B
F-PF-P
M-PM-P

Among them, A, B, C, D, E, F, M, and P are all identification information corresponding to the stored data, A, C, D, and E are all corresponding to B, and B corresponds to target data content 1; F and M Both correspond to P, and P corresponds to the target data content 2;

Obtaining a data deletion instruction sent by the client, where, when the first identifier information of the data to be deleted in the data deletion instruction is A, in the stored correspondence, the first correspondence corresponding to A is searched, and the first correspondence is only Including AB, and determining that A does not correspond to the target data content. At this point, you can Deleting the first correspondence corresponding to the first identifier information, that is, A-B, and notifying the client that the data to be deleted has been deleted;

When the first identifier information of the data to be deleted is B, the first correspondence corresponding to B is searched for in the stored correspondence, and the first correspondence includes AB, CB, DB, and EB, and B is determined. Corresponding to the target data content. In this case, you need to set B to the deleted state and notify the client that the data to be deleted has been deleted.

After B is set to the deleted state, the corresponding relationship is checked periodically or irregularly, and it is determined whether there is still a first correspondence relationship including B in the correspondence relationship; when there is no first correspondence relationship including B, the target corresponding to B is Data content 1 is deleted.

As an implementation manner, based on FIG. 2, as shown in FIG. 3, a data deletion method provided by an embodiment of the present application may further include:

S301: When it is determined that the first identifier information does not correspond to the target data content, determine, according to the first correspondence, the second identifier information corresponding to the first identifier information, where the second identifier information corresponds to the target data content;

S302: determining whether the second identification information has been set to the deleted state; when it is determined that the second identification information is not set to the deleted state, executing S105, when determining that the second identification information has been set to the deleted state, executing S303;

S303: Determine whether the second correspondence corresponding to the second identifier information is included in the correspondence relationship, and if it is determined that the second correspondence is included in the correspondence, S105 is performed, and the second relationship is not included in the correspondence. Corresponding to the relationship, executing S304;

S304: Delete the first correspondence that includes the first identifier information and delete the target data content corresponding to the second identifier information.

When it is determined that the first identifier information does not correspond to the target data content, the first correspondence may be determined to be only one, and the second identifier information corresponding to the target data content may be determined according to the first correspondence, and the second identifier is further determined. Whether the identifier information is set to the deleted state, and when the second identifier information is determined to be deleted, the second correspondence corresponding to the second identifier information is not included in the correspondence, and The first correspondence may be deleted and the target data content may also be deleted, and the subsequent notification may be notified that the data to be deleted by the client has been deleted. When it is determined that the second identifier information has been set to the deleted state, and the corresponding relationship includes the first correspondence, If the second correspondence relationship of the second identifier information is included, only the first correspondence relationship is deleted.

According to the above example, the data storage end stores a corresponding relationship, as shown in Table 1.

When the data deletion instruction carrying the first identification information is A, A does not correspond to the target data content, and according to the first correspondence AB, it is determined that B and B correspond to the target data content 1, and it is determined whether B has been set to the deleted state. When the status is not set to the deleted state, the first correspondence AB is directly deleted. When the B is set to the deleted state, it is determined whether the second correspondence corresponding to B is included in the correspondence, such as a table. As shown in FIG. 1, the second correspondence relationship includes CB, DB, and EB. In this case, the first correspondence AB is directly deleted, and only when the second correspondence CB, DB, and EB are not present, the first correspondence AB is deleted and deleted. Target data content 1.

As an implementation manner, based on FIG. 1, as shown in FIG. 4, a data deletion method provided by an embodiment of the present application may further include:

S401: When the first identifier information is not found in the stored correspondence, the target data content corresponding to the first identifier information is deleted.

When the first identifier information is not found in the stored correspondence, it may be determined that the corresponding relationship including the first identifier information is not stored locally, and the target data content corresponding to the first identifier information may be directly deleted.

As shown in FIG. 5, the embodiment of the present application provides a data storage method, which may include the following steps:

S501: Obtain a probe request for data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored.

It can be understood that when the client needs to store data, the client first sends a probe request to the data storage terminal based on the data to be stored to detect whether the data storage terminal stores the same target data content as the data content of the data to be stored. The data storage end may obtain a probe request for the data to be stored sent by the client according to the related technology, where the probe request includes first identifier information and feature information of the data to be stored. As an implementation manner, the feature information may be a check value of the data to be stored, for example, an MD5 value, or the feature information may be a check value of the data to be stored and a data amount, or the feature information may be data to be stored. Check value and partial data content, etc., to detect whether the local target number of the data content of the data to be stored is stored locally by the feature information according to.

The third identifier information may be the file name of the data to be stored or the corresponding path information to be stored, etc., and the information of the data to be stored may be uniquely determined; the fourth identifier information mentioned later may correspond to the target data content. The file name of the stored data or the corresponding storage path information, etc., can uniquely determine the information of the stored data.

S502: Comparing the feature information of the data to be stored with the feature information of the locally stored data, and determining whether the target data content that is the same as the data content of the data to be stored is stored locally;

It should be noted that when the data storage end stores data, the feature information of the stored data may be correspondingly stored. The feature information of the data to be stored is compared with the feature information of the locally stored data. When the feature information of the data to be stored matches the feature information of the locally stored data, it is determined that the data content of the data to be stored is stored locally. The target data content, when the feature information of the data to be stored does not match the feature information of the locally stored data, determines that the target data content that is the same as the data content of the data to be stored is not locally stored.

S503: If the target data content is already stored, obtaining fourth identification information of the target data content;

When it is determined that the target data content that is the same as the data content of the data to be stored is locally stored, the fourth identification information of the target data content may be obtained by a related technique.

S504: Store a correspondence between the third identifier information and the fourth identifier information, and notify the client that the data to be stored is stored.

The corresponding relationship between the third identifier information and the fourth identifier information is stored, so that when the client reads the data content corresponding to the third identifier information, the data storage end is configured according to the correspondence between the third identifier information and the fourth identifier information. And reading the target data content corresponding to the fourth identification information.

For example, the client sends a probe request to the data storage end, where the third identifier information carrying the data to be stored in the probe request is A and the feature information is a, and the feature information of the stored data is compared by comparing a and the data storage end. Determining that the data storage end has the same target data content as the data content of the data to be stored, and the fourth identifier information B corresponding to the target data content, the data storage end stores the correspondence relationship AB, and notifies the client that the data to be stored is stored. .

Applying the detection request of the data to be stored sent by the client, the probe request includes the third identifier information and the feature information of the data to be stored; and performing the feature information of the data to be stored and the feature information of the locally stored data. Aligning, determining whether the local has the same target data content as the data content of the data to be stored; if the target data content is already stored, obtaining the fourth identification information of the target data content; storing the third identification information and the The fourth identifies the correspondence between the information and notifies the client that the data to be stored has been stored. In the embodiment of the present application, when the target data content of the data to be stored is stored locally, the client does not prompt the client to upload the data content of the data to be stored, but only the third identifier information of the data to be stored. Corresponding relationship with the fourth identification information of the target data content, and notifying the client that the stored data is stored, so that the client reads the data content corresponding to the third identification information after the subsequent reading, according to the corresponding relationship, Take the target data content. It can be seen that for the data with the same data content, only one real data content is stored locally, which saves the local storage space, that is, saves the storage space of the data storage end, and saves the storage time when the client stores the data. Subsequently, when the data storage end receives the deletion request that is sent by the client and carries the third identifier information, and the data storage end only stores the correspondence between the third identifier information and the fourth identifier information corresponding to the target data content, When the data content corresponding to the third identifier information is not stored, the data storage terminal may delete only the corresponding relationship, and the data content corresponding to the third identifier information does not need to be deleted, thereby saving the time consumed for deleting the data.

As an implementation manner, based on FIG. 5, as shown in FIG. 6, a data storage method provided by an embodiment of the present application may further include:

S601: When the target data content is not stored, send data upload information to the client, so that the client uploads data content of the data to be stored;

S602: Receive and store data content of the data to be stored.

When it is determined that the target data content that is the same as the data content of the data to be stored is not locally stored, the data uploading information is sent to the client by the related technology, so that the client uploads the data content of the data to be stored, and receives the storage according to the related technology. The data content of the data to be stored.

As an implementation manner, the feature information may include: verification information of data to be stored, data amount of data to be stored, and data content of a predetermined number of bits of data to be stored;

The comparing the feature information of the data to be stored with the feature information of the locally stored data, The step of determining whether the local has stored the same target data content as the data content of the data to be stored may include:

Comparing the check information of the data to be stored with the check information of the locally stored data, and comparing the data amount of the data to be stored with the data amount of the locally stored data, and the predetermined number of bits of the data to be stored The data content is compared with the data content of the predetermined number of bits of the locally stored data;

When the check information of the data to be stored matches the check information of the locally stored data, and the data amount of the data to be stored matches the data amount of the locally stored data, and the data content of the predetermined number of bits of the data to be stored is locally When the data contents of the predetermined number of bits of the stored data match, it is determined that the target data content identical to the data content of the data to be stored is stored locally.

It can be understood that, when detecting whether there is the same target data content as the data content of the data to be stored locally, it is determined that the more the qualification conditions exist, that is, the more the qualification conditions in the feature information on which the data content is determined to be the same, the storage The security of the data is higher. In order to prevent the subsequent illegal client from acquiring the target data content by using the check value, the feature information may include the check information of the data to be stored, the data amount of the data to be stored, and the data content of the predetermined number of bits of the data to be stored. Comparison with the verification information of the stored data and the verification information of the locally stored data, the amount of data of the data to be stored and the amount of data of the locally stored data, the data content of the predetermined number of bits of the data to be stored, and the reservation of the locally stored data The data content of the number of bits determines whether the data content is the same. Only when the above three comparison results are matched, it is determined that the data content is the same.

Corresponding to the foregoing method embodiment, the embodiment of the present application provides a data deletion device. As shown in FIG. 7, the device may include:

The first obtaining module 710 is configured to obtain a data deletion instruction sent by the client, where the data deletion instruction carries the first identification information of the data to be deleted;

The first search module 720 is configured to search, in the stored correspondence, a first correspondence that includes the first identifier information, where the correspondence relationship is identifier information of data to be stored and identifier of the corresponding stored data. Corresponding relationship of the information, the corresponding stored data is data that is stored locally and is the same as the data content of the data to be stored, and the data to be stored is the corresponding data content to be stored locally. data;

The first determining module 730 is configured to: when finding the first correspondence that includes the first identifier information After determining whether the first identifier information corresponds to the target data content; if yes, triggering the setting module, if not, triggering the first deleting module;

The setting module 740 is configured to set the first identification information to a deleted state;

The first notification module 750 is configured to notify the client that the data to be deleted has been deleted;

The first deleting module 760 is configured to delete a first correspondence that includes the first identifier information.

The second notification module 770 is configured to notify the client that the data to be deleted has been deleted.

As an implementation manner, the setting module 720 is specifically configured to: set a deletion task corresponding to the target data content of the first identifier information, and set the first identifier information to a deleted state;

As an implementation manner, the apparatus further includes a determining module, a third determining module, a fourth determining module, and a third deleting module;

As an implementation manner, the apparatus further includes a fourth deletion module;

The fourth deleting module is configured to delete the target data content corresponding to the first identifier information when the first identifier information is not found in the stored correspondence relationship.

Corresponding to the foregoing method embodiments, the embodiment of the present application provides a data storage device. As shown in FIG. 8, the device may include:

a second obtaining module 810, configured to obtain a probe request for data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored;

The comparison determining module 820 is configured to compare the feature information of the data to be stored with the feature information of the locally stored data, and determine whether the target data content that is the same as the data content of the data to be stored is stored locally;

a third obtaining module 830, configured to obtain fourth identification information of the target data content if the target data content is already stored;

The storage notification module 840 is configured to store a correspondence between the third identifier information and the fourth identifier information, and notify the client that the to-be-stored data has been stored.

Applying the detection request of the data to be stored sent by the client, the probe request includes the third identifier information and the feature information of the data to be stored; and performing the feature information of the data to be stored and the feature information of the locally stored data. Aligning, determining whether the local has the same target data content as the data content of the data to be stored; if the target data content is already stored, obtaining the fourth identification information of the target data content; storing the third identification information and the The fourth identifies the correspondence between the information and notifies the client that the data to be stored has been stored. In the embodiment of the present application, when the target data content of the data to be stored is stored locally, the client does not prompt the client to upload the data content of the data to be stored, but only the third identifier information of the data to be stored. Corresponding relationship with the fourth identification information of the target data content, and notifying the client that the stored data is stored, so that the client reads the data content corresponding to the first identification information after the subsequent reading, according to the corresponding relationship, Take the target data content. It can be seen that for the data with the same data content, only one real data content is stored locally, which saves the local storage space, that is, saves the storage space of the data storage end, and saves the storage time when the client stores the data. Subsequently, when the data storage end receives the deletion request that is sent by the client and carries the third identifier information, and the data storage end only stores the correspondence between the third identifier information and the fourth identifier information corresponding to the target data content, When the data content corresponding to the third identifier information is not stored, the data storage terminal may delete only the corresponding relationship, and the data content corresponding to the third identifier information does not need to be deleted, thereby saving the time consumed for deleting the data.

As an implementation manner, a data storage device provided by an embodiment of the present application may further include a sending module and a receiving storage module.

As an implementation manner, the feature information may include verification information of the data to be stored, a data amount of the data to be stored, and a data content of a predetermined number of bits of the data to be stored;

The comparison unit is configured to compare the verification information of the data to be stored with the locally stored data. Verifying the information for comparison, and comparing the amount of data of the data to be stored with the amount of data of the locally stored data, and prescribing the data content of the predetermined number of bits of the data to be stored with the locally stored data The data content of the digits is compared;

The determining unit is configured to: when the check information of the data to be stored matches the check information of the locally stored data, and the data amount of the data to be stored matches the data amount of the locally stored data, and the When the data content of the predetermined number of bits of the data to be stored matches the data content of the predetermined number of bits of the locally stored data, it is determined that the target data content identical to the data content of the data to be stored is locally stored.

The embodiment of the present application further provides an electronic device, including a processor and a memory, wherein the memory is used to store a computer program;

The data deletion method provided by the embodiment of the present application is implemented by the processor, when the computer program is stored on the memory, where the data deletion method may include the following steps:

Applying the embodiment of the present application, the processor of the electronic device runs the computer program stored in the memory to perform the data deletion method provided by the embodiment of the present application, and thus can achieve: obtaining the number When the content is the same as the target data content of the stored data, the data storage end does not repeatedly store the data content, but stores the correspondence between the data to be stored and the corresponding stored data, so that the client According to the corresponding relationship, the target data content can be found to save the local storage space, and when the data is deleted, the corresponding storage correspondence can be directly deleted, which saves the time consumed when deleting the data.

Optionally, in the process of performing the implementing the setting of the first identifier information to a deleted state, the electronic device is specifically configured to:

Optionally, the electronic device is further configured to:

Determining, according to the first correspondence, the second identifier information corresponding to the first identifier information, where the second identifier information corresponds to the target data content, when determining that the first identifier information does not correspond to the target data content ;

Optionally, the electronic device is further configured to:

The embodiment of the present application further provides a computer program for being executed to perform the data deletion method provided by the embodiment of the present application, wherein the data deletion method may include the following steps:

With the embodiment of the present application, the computer program can execute the data deletion method provided by the embodiment of the present application at runtime, so that when the detection request of the data to be stored is the same as the target data content of the stored data, The data storage end does not repeatedly store the data content, but stores the correspondence between the data to be stored and the corresponding stored data, so that the client can find the target data content according to the corresponding relationship, thereby saving local storage space, and When the data is deleted, the corresponding relationship of the corresponding storage can be directly deleted, which saves the time consumed when deleting the data.

Optionally, the computer program is configured to be executed to perform the process of setting the first identification information to a deleted state, specifically for:

Setting a deletion task corresponding to the target data content of the first identification information, and setting the first target The information is set to the deleted state;

Optionally, the computer program is operative to execute:

The embodiment of the present application provides a storage medium, where the storage medium is used to store a computer program, and the computer program is executed to perform the data deletion method provided by the embodiment of the present application. The data deletion method may include the following steps:

Searching, in the stored correspondence, a first correspondence including the first identifier information, where The corresponding relationship is a correspondence between the identifier information of the data to be stored and the identifier information of the corresponding stored data, where the corresponding stored data is stored locally and associated with the data to be stored. Data having the same data content, and the data to be stored is data to be stored locally in the corresponding data content;

Applying the embodiment of the present application, the storage medium stores a computer program that executes the data deletion method provided by the embodiment of the present application at runtime, and thus can realize: obtaining the same data to be stored as the target data content of the stored data. When the request is detected, the data storage end does not repeatedly store the data content, but stores the correspondence between the data to be stored and the corresponding stored data, so that the client can find the target data content according to the corresponding relationship, thereby saving the local The storage space, and when deleting data, can directly delete the corresponding relationship of the storage, saving the time consumed when deleting the data.

Optionally, the computer program is executed to perform the process of setting the first identification information to a deleted state, specifically for:

Optionally, the computer program is executed to execute:

Determining, according to the first correspondence, the second identifier information corresponding to the first identifier information, where the second identifier information is related to the Corresponding to the target data content;

Optionally, the computer program is executed to execute:

The data storage method provided by the embodiment of the present application is implemented by the processor, where the data storage method may include the following steps:

Applying the embodiment of the present application, the processor of the electronic device runs the computer program stored in the memory In order to perform the data storage method provided by the embodiment of the present application, it is possible to realize that only one real data content is stored locally for the same data content, thereby saving local storage space, that is, saving storage space of the data storage end. And, saves storage time when the client stores data.

Optionally, the electronic device is further configured to:

Receiving and storing the data content of the data to be stored.

The electronic device performs the comparison between the feature information of the data to be stored and the feature information of the locally stored data, and determines whether the target data content that is the same as the data content of the data to be stored is stored locally. In the process, specifically used to:

The embodiment of the present application further provides a computer program for being executed to perform the data storage method provided by the embodiment of the present application, wherein the data storage method may include the following steps:

Comparing the feature information of the data to be stored with the feature information of the locally stored data, Determining whether the local target data content that is the same as the data content of the data to be stored is stored locally;

Applying the embodiment of the present application, the computer program performs the data storage method provided by the embodiment of the present application at runtime, so that it can realize that only one real data content is stored locally for the data with the same data content, thereby saving local storage space. That is, the storage space on the data storage side is saved, and the storage time when the client stores data is saved.

Optionally, the computer program is executed to execute:

Receiving and storing the data content of the data to be stored.

The computer program is executed to perform the comparing the feature information of the data to be stored with the feature information of the locally stored data, and determining whether the same target data of the data content of the data to be stored has been stored locally In the process of content, it is specifically used to:

The embodiment of the present application provides a storage medium, where the storage medium is used to store a computer program. The computer program is executed to execute the data storage method provided by the embodiment of the present application, wherein the data storage method may include the following steps:

Applying the embodiment of the present application, the storage medium stores a computer program that executes the data storage method provided by the embodiment of the present application at runtime, and thus can realize that only one real data content is stored locally for the data with the same data content, thereby saving The local storage space saves storage space on the data storage side and saves storage time when the client stores data.

Optionally, the computer program is executed to execute:

Receiving and storing the data content of the data to be stored.

For the system/device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The various embodiments in the present specification are described in a related manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

The above description is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are included in the scope of the present application.

Claims

A data deletion method, the method comprising:

Obtaining a data deletion instruction sent by the client, where the data deletion instruction carries the first identification information of the data to be deleted;

Searching, in the stored correspondence, a first correspondence that includes the first identifier information, where the correspondence relationship is a correspondence between the identifier information of the data to be stored and the identifier information of the corresponding stored data, where the corresponding relationship is The stored data is data in which the corresponding data content is stored locally and is the same as the data content of the data to be stored, and the data to be stored is data in which the corresponding data content is to be stored locally;

After finding the first correspondence that includes the first identifier information, determining whether the first identifier information corresponds to the target data content;

If yes, the first identifier information is set to the deleted state, and the client is notified that the to-be-deleted data has been deleted;

If no, the first correspondence corresponding to the first identifier information is deleted, and the client is notified that the data to be deleted has been deleted.
The method according to claim 1, wherein the step of setting the first identification information to a deleted state comprises:

Setting a deletion task corresponding to the target data content of the first identification information, and setting the first identification information to a deleted state;

The method further includes: checking the stored correspondence, and determining whether the first correspondence corresponding to the first identifier information still exists in the correspondence relationship;

When it is determined that there is no existence, the target data content is deleted in response to the deletion task.
The method of claim 1 further comprising:

Determining, according to the first correspondence, the second identifier information corresponding to the first identifier information, where the second identifier information corresponds to the target data content, when determining that the first identifier information does not correspond to the target data content ;

Determining whether the second identification information has been set to a deleted state;

When it is determined that the second identifier information is not set to the deleted state, performing the step of deleting the first correspondence relationship that includes the first identifier information;

When it is determined that the second identifier information has been set to the deleted state, determining whether the second relationship corresponding to the second identifier information is included in the correspondence relationship other than the first correspondence relationship;

When it is determined that the second correspondence is included in the correspondence, the step of deleting the first correspondence that includes the first identifier information is performed;

When it is determined that the second correspondence is not included in the correspondence, the first correspondence that includes the first identifier information is deleted, and the target data content corresponding to the second identifier information is deleted.
The method according to any one of claims 1 to 3, wherein the method further comprises:

When the first identifier information is not found in the stored correspondence, the target data content corresponding to the first identifier information is deleted.
A data storage method, the method comprising:

Obtaining a probe request for the data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored;

Comparing the feature information of the to-be-stored data with the feature information of the locally stored data, and determining whether the target data content that is the same as the data content of the to-be-stored data is stored locally;

Obtaining fourth identification information of the target data content if the target data content is already stored;

And storing a correspondence between the third identifier information and the fourth identifier information, and notifying the client that the to-be-stored data is stored.
The method of claim 5, wherein the method further comprises:

When the target data content is not stored, sending data upload information to the client, so that the client uploads the data content of the data to be stored;

Receiving and storing the data content of the data to be stored.
The method according to claim 5 or 6, wherein the feature information includes verification information of the data to be stored, a data amount of the data to be stored, and a predetermined number of bits of the data to be stored. Data content

The step of comparing the feature information of the data to be stored with the feature information of the locally stored data, and determining whether the target data content of the data content of the data to be stored is stored locally includes:

Comparing the check information of the data to be stored with the check information of the locally stored data, and comparing the data amount of the data to be stored with the data amount of the locally stored data, and the The data content of the predetermined number of bits of the stored data is compared with the data content of the predetermined number of bits of the locally stored data;

When the check information of the data to be stored matches the check information of the locally stored data, and the data amount of the data to be stored matches the data amount of the locally stored data, and the predetermined number of bits of the data to be stored When the data content matches the data content of the predetermined number of bits of the locally stored data, it is determined that the target data content identical to the data content of the data to be stored is locally stored.
A data deletion device, characterized in that the device comprises:

a first obtaining module, configured to obtain a data deletion instruction sent by the client, where the data deletion instruction carries first identification information of the data to be deleted;

a first searching module, configured to search, in the stored correspondence, a first correspondence that includes the first identifier information, where the correspondence relationship is identifier information of data to be stored and identifier information of the corresponding stored data. Corresponding relationship, the corresponding stored data is data in which the corresponding data content is stored locally and is the same as the data content of the data to be stored, and the data to be stored is data corresponding to the data content to be stored locally. ;

a first determining module, configured to determine whether the first identifier information corresponds to the target data content after the first correspondence information that includes the first identifier information is found; if yes, trigger the setting module, if not, trigger the first Delete the module;

The setting module is configured to set the first identification information to a deleted state;

a first notification module, configured to notify the client that the data to be deleted has been deleted;

The first deleting module is configured to delete a first correspondence that includes the first identifier information;

The second notification module is configured to notify the client that the data to be deleted has been deleted.
The device according to claim 8, wherein the setting module is configured to set a deletion task corresponding to the target data content of the first identification information, and set the first identification information to a deleted state;

The device further includes: a second determining module and a second deleting module;

The second determining module is configured to check the stored correspondence, and determine whether the first correspondence corresponding to the first identifier information still exists in the corresponding relationship, and when it is determined that the corresponding relationship does not exist, triggering the first Second delete the module;

The second deleting module is configured to delete the target data content in response to the deleting task.
The device according to claim 8, wherein the device further comprises a determining module, a third determining module, a fourth determining module, and a third deleting module;

The determining module is configured to: when determining that the first identifier information does not correspond to the target data content, determine second identifier information corresponding to the first identifier information according to the first correspondence, the second identifier information Corresponding to the target data content;

The third determining module is configured to determine whether the second identifier information is set to the deleted state, and when the second identifier information is not set to the deleted state, triggering the first deleting module; When the second identifier information is set to the deleted state, the fourth determining module is triggered;

The fourth determining module is configured to determine, in addition to the first correspondence, whether the second correspondence corresponding to the second identifier information is included in the correspondence, and when determining that the correspondence includes the The second deletion module is triggered when the second correspondence is performed; and the third deletion module is triggered when it is determined that the second correspondence is not included in the correspondence;

The third deleting module is configured to delete the first correspondence that includes the first identifier information and delete the target data content corresponding to the second identifier information.
The device according to any one of claims 8 to 10, wherein the device further comprises a fourth deletion module;

The fourth deleting module is configured to delete the target data content corresponding to the first identifier information when the first identifier information is not found in the stored correspondence relationship.
A data storage device, characterized in that the device comprises:

a second obtaining module, configured to obtain a probe request for data to be stored sent by the client, where the probe request includes third identifier information and feature information of the data to be stored;

The comparison determining module is configured to compare the feature information of the data to be stored with the feature information of the locally stored data, and determine whether the target data content that is the same as the data content of the data to be stored is stored locally;

a third obtaining module, configured to obtain fourth identification information of the target data content if the target data content is already stored;

And a storage notification module, configured to store a correspondence between the third identifier information and the fourth identifier information, and notify the client that the to-be-stored data has been stored.
The device according to claim 12, wherein the device further comprises a transmitting module and a receiving storage module;

The sending module is configured to send data uploading information to the client when the target data content is not stored, so that the client uploads the data content of the to-be-stored data;

The storage module is configured to receive and store data content of the data to be stored.
The device according to claim 12 or 13, wherein the feature information includes verification information of the data to be stored, a data amount of the data to be stored, and a predetermined number of bits of the data to be stored. Data content

The comparison determination module includes a comparison unit and a determination unit;

The comparison unit is configured to compare the verification information of the data to be stored with the verification information of the locally stored data, and perform the data amount of the data to be stored and the data amount of the locally stored data. Aligning, and comparing the data content of the predetermined number of bits of the data to be stored with the data content of the predetermined number of bits of the locally stored data;

The determining unit is configured to: when the verification information of the data to be stored is locally stored Verifying that the information matches, and the amount of data of the data to be stored matches the amount of data of the locally stored data, and the data content of the predetermined number of bits of the data to be stored matches the data content of the predetermined number of bits of the locally stored data At the time, it is determined that the target data content identical to the data content of the data to be stored is stored locally.
An electronic device, comprising: a processor and a memory, wherein the memory is configured to store a computer program;

The processor, when used to execute a computer program stored on a memory, implements the data deletion method according to any one of claims 1-4.
A computer program for operating the data deletion method of any of claims 1-4.
A storage medium, characterized in that the storage medium is for storing a computer program, the computer program being operative to perform the data deletion method of any one of claims 1-4.
An electronic device, comprising: a processor and a memory, wherein the memory is configured to store a computer program;

The processor, when used to execute a computer program stored on a memory, implements the data storage method of any one of claims 5-7.
A computer program for operating a data storage method according to any one of claims 5-7.
A storage medium, characterized in that the storage medium is for storing a computer program, the computer program being operative to perform the data storage method of any one of claims 5-7.