CN103841180A - Network data synchronization method and device based on operating instruction, terminal device and server - Google Patents
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Abstract
The invention provides a network data synchronization method based on an operating instruction. The method comprises the steps that the operating instruction is downloaded, specifically, the operating instruction is downloaded from a server terminal after a user logs in; data are synchronized, specifically, the downloaded operating instruction is executed according to a local file or a catalog, and local data are synchronized. The operating instruction corresponds to the correction operation conducted by the user on the file or the catalog through a plurality of client terminals. The invention further provides a network data synchronization device based on the operating instruction, a terminal device and a server. By means of the network data synchronization method and device based on the operating instruction, the terminal device and the server, the server terminal and the client terminals achieve data synchronization through a small amount of data interaction, and system resources are saved.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a network data synchronization method and device based on an operation instruction, terminal equipment and a server.
Background
With the rapid development of network technology, data network storage functions have been widely used. Generally, a user performs a modification operation on a local file at a client (e.g., a personal computer, a smart phone, a tablet device, etc.), and then uploads the file to a server for storage. When a user operates a file through a plurality of clients, the problem of file data synchronization needs to be considered, for example, the user performs renaming modification operation on one file at the client a, and when the user logs in by using the client B, data synchronization between the client B and the server is required, so that the observed file and the modified content can be ensured to be consistent.
At present, data synchronization for a client and a server generally includes that after a user logs in the client, the server periodically sends a latest user file tree to the client, and after receiving the file tree, the client compares the latest user file tree with the file tree of the client to synchronously update a difference part; and after the user performs operations such as addition and deletion of files, the operated file tree is also sent to the server, and the server performs file tree comparison to update the user file tree. Furthermore, during the period that the user uses the client, it may happen that other users modify the file with other clients, and the modification is also synchronized with the user file tree periodically transmitted by the server, so that the file data of the client is up-to-date.
The file tree is a tree data structure stored in a memory of a server or a user terminal device, and the tree data structure has the following characteristics: 1. there is a unique root node; 2. each node has a unique father node; 3. each node may have multiple children. The file tree includes information such as a file name, a parent node, and a child node as nodes. The function of the file tree is to facilitate quick queries and comparisons of user file and directory (folder) information, which does not contain true user files.
Research and analysis show that the existing data synchronization scheme aiming at the client and the server has the defects. When a user has many files and directories, the file tree is also relatively large, network load is increased in the transmission process, and the comparison process of the two parties for the file tree consumes a lot of resources. If the user only moves a certain file from the M directory to the N directory, for the server, the action includes deleting the file under the M directory first, and then creating a new same file under the N directory, then after the server transmits the file tree containing the modification information to other clients, the other clients will delete the file under the M directory first when updating data, and then download the file from the server again and store the file under the N directory. The original file is downloaded again, which causes resource waste, and when the file is large, the resource consumption is more serious.
Disclosure of Invention
In view of this, the invention provides a data synchronization method and apparatus based on an operation instruction, a terminal device and a server, and by generating an operation instruction record and prompting synchronization data, the synchronization method is flexible, file tree transmission and comparison are omitted, and system resources can be saved.
The invention provides a network data synchronization method based on an operation instruction, which comprises the following steps: an operation instruction downloading step, namely downloading an operation instruction from a server after logging in; a data synchronization step, namely, the synchronization of local data is carried out aiming at the operation instruction of executing the downloading of the local file or the directory; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
The invention also provides a network data synchronization method based on the operation instruction, which comprises the following steps: an operation instruction issuing step, after a client logs in, a server issues an operation instruction to the client; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
The invention also provides a network data synchronization device based on the operation instruction, which comprises: the operation instruction downloading module is used for downloading the operation instruction from the server after the client logs in; the data synchronization module is used for executing downloaded operation instructions aiming at the local files or directories to synchronize local data; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
The invention also provides terminal equipment comprising the network data synchronization device based on the operation instruction.
The invention also provides a network data synchronization device based on the operation instruction, which comprises: the operation instruction issuing module is used for issuing an operation instruction to the client after the client logs in; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
The invention also provides a server comprising the network data synchronization device based on the operation instruction.
The invention has the beneficial effects that: the invention realizes network data synchronization based on the operation instruction, and can realize the data synchronization by only a small amount of data interaction between the server and the client aiming at the data synchronization requirements of a plurality of clients of a user; for the condition that the client terminal is not logged in for a long time and the file tree of the user at the server terminal is changed greatly, the server terminal firstly receives the current file tree of the user, creates an operation instruction after comparison, can complete the synchronous work of the client terminal only by transmitting the instruction, does not need to transmit complete file and directory structure information, and achieves the purpose of saving system resources.
Drawings
Fig. 1 is a flow chart of the network data synchronization method based on operation instructions according to the invention.
Fig. 2 is a block diagram of a network data synchronization apparatus based on an operation instruction according to an embodiment of the present invention.
Fig. 3 is a block diagram of a network data synchronization apparatus based on operation instructions according to another embodiment of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a flow chart of the network data synchronization method based on operation instructions at the client side, the method includes: s101, downloading an operation instruction, namely downloading the operation instruction from a server after a client logs in; and S102, a data synchronization step, namely executing the downloaded operation instruction aiming at the local file or the directory of the client to synchronize the local data.
The operation instruction of the server corresponds to the modification operation of the user on the file at the client, and the user can log in the client (such as a smart phone client, a notebook computer client, and the like) by using different devices to perform modification operations such as addition, deletion, modification and the like on the interested file or directory, and after each operation is successful, a corresponding operation instruction is generated at the server.
Correspondingly, on the side of the server, after the client logs in, the server issues an operation instruction to the client.
In an actual application scenario, based on a network data storage function of technologies such as a network disk (also called a network hard disk) and cloud storage, a user uploads a file of the user to a server through a network for storage, and logs in a client through a computer, a tablet device or a smart phone when the file needs to be checked and modified. In the embodiment, a mobile phone is used for logging in a client, and a network disk is used as a server of a server.
In order to ensure that the data seen by the user is consistent with the data stored on the current network disk, the mobile phone firstly downloads an operation instruction from the network disk after logging in the client.
These operation instructions record all modification operations that a user (the user or other users) has performed on the file data on the client terminal for a period of time in the past. For example, a user A logs in a client through a mobile phone three days before, renaming is carried out on a folder A, a client renaming request is received at a network disk server, and after the renaming operation is successful, a renaming operation instruction aiming at the folder A is generated by the server; and the user B logs in through the computer two days ago, moves the file B from the first directory to the second directory, and generates a 'moving' operation instruction aiming at the file B at the server. Similarly, according to the data operation of the user on the client, the server can also generate a "new" operation instruction and a "delete" operation instruction for the file or folder, and can also generate a "recycle" operation instruction if the client has a recycle bin function, and the like.
After the mobile phone client downloads the operation instructions, the operation instructions can be executed for the local files or folders, that is, the local a folder is renamed according to the "rename" operation instruction for the a folder, the B file is moved from the current first directory to the second directory according to the "move" operation instruction for the B file, and so on. Therefore, the data of the mobile phone client is updated, and the synchronization of the mobile phone client and the network disk data is realized.
The data synchronization method records the specific operation of the user by using the operation instruction, and only local corresponding operation needs to be carried out on the occurred operation during synchronization. When the method is used for data synchronization, the whole user file tree does not need to be downloaded from a network disk, and further the comparison of the file trees is not needed, so that the transmission quantity of network data is reduced, the processing quantity of the network data is reduced, the system resources can be saved, and the system pressure is relieved.
In addition, in the above embodiment, if the login is the first login by using the mobile phone, all files, directory structures, and the like are directly downloaded to the local, and instruction downloading and data synchronization are performed during subsequent login again.
In one embodiment of the invention, the operation instructions generated by the server are time-stamped for processing. Regarding the Timestamp, generally, the Timestamp (Timestamp) refers to adding a time identifier, such as a date or a time, to the material, and recording the occurrence time of the important event in the material, so as to ensure that the local material update sequence is consistent with the remote end, and provide temporal identification for future material management.
In an embodiment of the invention, the first user renames (or moves) the folder A at the mobile phone client, and after a period of time, the first user deletes the folder A. And after the second user logs in the computer, according to the timestamp of the operation instruction, only the last deletion operation instruction needs to be received, and the folder A is directly deleted, so that the data processing amount can be reduced to a greater extent, and the system resources are saved.
In the above embodiment, in order to record all operations of the user, all operation instructions generated by the server need to be stored in the server for downloading and use by each client.
In order to reduce the number of the operation instructions of the server, in an embodiment of the present invention, a data synchronization processing mode is set according to the login time of the user, and all the operation instructions do not need to be saved in the server, but only the operation instructions within a recent period of time (such as a month, two months, a half year, or a longer period of time) are saved, and the specific processing mode may be divided into the following cases:
firstly, if the server is preset to store the operation instruction within one month, for example, and when the time of the current login of the client is three weeks from the last synchronization data, for example, the client downloads only the operation instruction generated within the three weeks from the server based on the timestamp of the operation instruction, and the rest of the instructions are not downloaded.
Secondly, if the server is preset to store the operation instruction within one month, for example, when the time from the current login time of the client to the last synchronization data of the client is two months, the client uploads the current file tree to the server before downloading any operation instruction, and the server receives the file tree of the client and compares the file tree with the file of the server, so as to create the operation instruction according to the difference between the two file trees. Specifically, for a node which exists on the client file tree but does not exist in the server file tree, indicating that the node has been deleted, a "delete" operation instruction for the node is created; if the node does not exist in the client file tree but exists in the server file tree, indicating that the node is a newly added node, a 'new' operation instruction is created for the node, if the node exists in both the client file tree and the server file tree but the parent node of the node in the client file tree is different from the parent node of the server file tree, indicating that the node has been moved, a 'move' operation instruction is created for the node, and the like. And after the file tree comparison and the operation instruction creation are completed, issuing the created operation instruction to the client for updating the client data.
In short, the operation instruction generated in the last period of time is saved at the server, and the earlier operation instruction is discarded, which is suitable for the case that the user logs in frequently, because the operation instruction in the shorter period of time is downloaded after each login of the user, and the earlier operation instruction does not need to be saved at the server. And for the condition that the user logs in again at a long time interval occasionally, sending the file tree of the client to the server according to the condition described in the second point, wherein the server extracts the node difference by comparing the nodes of the file tree, creates corresponding operation instructions, and the client can complete the full-disk synchronization of the local data by obtaining the operation instructions. Therefore, the space of the server can be saved to the maximum extent, the data transmission quantity is reduced, and the system resources are released.
In addition, for the case that the client logs in for the first time, as described in the foregoing embodiment, data such as a file and a directory structure of the server is directly downloaded, and no operation instruction is downloaded, and when logging in again, the operation instruction is downloaded as synchronous data.
After the data synchronization of the client is completed, the user can perform normal modification operations such as new creation, deletion, movement, renaming and the like on the files and directories of the client. And uploading the newly-built files and directories to a server side for storage, so that other clients can download and synchronize the files and the directories.
When the operation instruction is used, the client and the server need to adopt the same operation protocol. In an embodiment of the present invention, each file and directory has a unique ID, the ID is assigned by the server, and the server and all clients execute a unified operation protocol, which specifically includes: NEW, creating a file or a directory, wherein the format of an operation instruction is { "command": "new", "type": "dir", "id": "12345", "paht": "1/123/1234" }; REMOVE, delete file or directory, operation command format is { "command": "remove", "type": "dir", "id": "12345", "path": "1/123/1234" }; MOVE, MOVE file or directory, operation command format is { "command": "move", "type": "dir", "id": "12345", "path": "1/123/1234", "dest": "1/123/234", where path is the directory to be moved, dest is the target directory to be moved; in addition, if the client has the RECYCLE bin function, a RECYCLE operation command can also be implemented. For the query operation, no consideration is needed since the query does not affect the file directory structure.
In another aspect, the present invention further provides a network data synchronization apparatus based on operation instructions, and referring to fig. 2, the apparatus 100 includes: the operation instruction downloading module 101 is used for downloading the operation instruction from the server after the client logs in; the data synchronization module 102 is configured to execute a downloaded operation instruction for a local file or a directory, and synchronize local data; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
In addition, the present invention also provides a terminal device including the network data synchronization apparatus 100 based on the operation instruction.
In addition, the present invention also provides a network data synchronization apparatus 200 based on an operation instruction, including: an operation instruction issuing module 201, configured to issue an operation instruction to a client after the client logs in; the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients. Preferably, referring to fig. 3, the apparatus 200 may further include a file tree receiving module 202, configured to receive a file tree uploaded by the client if the time interval between the current login and the last login of the client exceeds a first predetermined time interval; and an operation instruction creating module 203, configured to compare nodes of the file tree of the client with nodes of the file tree of the server with reference to the file tree of the server, and create an operation instruction according to the difference between the nodes.
In addition, the present invention also provides a server including the network data synchronization apparatus 200 based on the operation instruction.
The embodiment of the invention relates to time stamping, and defaults that the time of a client and the time of a server are synchronized, and if the time of the client and the time of the server are not synchronized, the client needs to perform time synchronization operation with the server. Since the improvement of the time synchronization operation is not in the scope of attention of the embodiments of the present invention, a detailed description thereof will not be made herein.
The technical solutions of the present invention have been described in detail with reference to specific embodiments, which are used to help understand the ideas of the present invention. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present invention also belong to the protection scope of the present invention.
Claims (26)
1. A network data synchronization method based on operation instructions is characterized by comprising the following steps:
an operation instruction downloading step, namely downloading an operation instruction from a server after logging in;
a data synchronization step, namely, the synchronization of local data is carried out aiming at the operation instruction of executing the downloading of the local file or the directory; wherein,
the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
2. The method for network data synchronization based on operation instructions according to claim 1, wherein the operation instructions comprise one or more of the following items: new, delete, move, rename, and reclaim.
3. The method for synchronizing network data according to claim 2, wherein the server generates the operation instruction after a modification operation occurs to a file or a directory of each of the plurality of clients, and the operation instruction is time-stamped.
4. The method according to claim 3, wherein when the operation instruction downloading step is executed, only the operation instruction later than a first time is downloaded from the server according to the timestamp, and the first time is a time when the client has last completed the data synchronization step.
5. The method for network data synchronization based on operation instructions according to claim 3, wherein for the operation instruction downloading step, if the last operation instruction for a single file or directory is a deletion instruction according to the time stamp, only the deletion instruction is downloaded for the single file or directory.
6. The method for synchronizing network data according to claim 1, wherein if the time interval between the current login and the last login exceeds a first predetermined time interval, before downloading the operation command from the server, the method further comprises:
and uploading the local file tree to the server.
7. A network data synchronization method based on operation instructions is characterized by comprising the following steps:
an operation instruction issuing step, after a client logs in, a server issues an operation instruction to the client; wherein,
the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
8. The method for network data synchronization based on operation instructions according to claim 7, wherein the operation instructions comprise one or more of the following items: new, delete, move, rename, and reclaim.
9. An operation instruction based network data synchronization method according to claim 7, wherein the operation instruction is generated after a modification operation occurs to a file or a directory of each of a plurality of clients, and the operation instruction is time-stamped.
10. The method for network data synchronization based on operation instruction as claimed in claim 9, wherein when the operation instruction issuing step is executed, only the operation instruction later than a first time is issued to the client according to the timestamp, and the first time is a time when the client completes data synchronization last time.
11. The method for network data synchronization based on operation instructions according to claim 9, wherein for the operation instruction issuing step, if the last operation instruction for a single file or directory is a delete instruction according to the time stamp, only the delete instruction is issued for the single file or directory.
12. The method for synchronizing network data according to claim 7, wherein if the time interval between the current login and the last login of the client exceeds a first predetermined time interval, before issuing the operation command to the client, the method further comprises:
receiving a file tree uploaded by the client;
and taking the file tree of the server as a reference, comparing the nodes of the file tree of the client with the nodes of the file tree of the server, and creating an operation instruction according to the difference of the nodes.
13. A network data synchronization apparatus based on operation instructions, comprising:
the operation instruction downloading module is used for downloading the operation instruction from the server after the client logs in;
the data synchronization module is used for executing downloaded operation instructions aiming at the local files or directories to synchronize local data; wherein,
the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
14. The operational instruction-based network data synchronization apparatus of claim 13, wherein the operational instruction comprises one or more of: new, delete, move, rename, and reclaim.
15. An operation instruction based network data synchronization device according to claim 14, wherein the operation instruction is generated by the server after the modification operation of the file or the directory of each of the plurality of clients, and the operation instruction is time-stamped.
16. The apparatus according to claim 15, wherein the operation instruction downloading module downloads, from the server, only the operation instruction later than a first time point, where the first time point is a time point at which the client has last completed data synchronization, according to the timestamp.
17. The operational instruction-based network data synchronization apparatus of claim 15, wherein, according to the timestamp, if a last operational instruction for a single file or directory is a deletion instruction, the operational instruction downloading module downloads only the deletion instruction for the single file or directory.
18. The apparatus for network data synchronization based on operation instruction according to claim 13, wherein the apparatus further comprises:
and the file tree uploading module is used for uploading the local file tree to the server when the time interval between the current login and the last login exceeds a first preset time interval.
19. A terminal device, characterized in that it comprises a network data synchronization device based on operation instructions according to any of claims 13-18.
20. A network data synchronization apparatus based on operation instructions, comprising:
the operation instruction issuing module is used for issuing an operation instruction to the client after the client logs in; wherein,
the operation instruction corresponds to modification operation of a file or a directory by a user through a plurality of clients.
21. The operational instruction-based network data synchronization apparatus of claim 19, wherein the operational instruction comprises one or more of: new, delete, move, rename, and reclaim.
22. The apparatus for network data synchronization based on operation instruction according to claim 19, further comprising:
the operation instruction generation module is used for generating an operation instruction after the file or the directory of each client in the plurality of clients is subjected to modification operation, and the operation instruction is provided with a time stamp.
23. The apparatus according to claim 21, wherein the operation instruction issuing module issues to the client only an operation instruction later than a first time according to the timestamp, and the first time is a time when the client last completes data synchronization.
24. The apparatus according to claim 21, wherein the operation instruction issuing module issues only the delete instruction for a single file or directory if the last operation instruction for the single file or directory is the delete instruction according to the timestamp.
25. The apparatus for network data synchronization based on operation instruction according to claim 19, wherein the apparatus further comprises:
the file tree receiving module is used for receiving the file tree uploaded by the client if the time interval between the current login and the last login of the client exceeds a first preset time interval;
and the operation instruction creating module is used for comparing the nodes of the file tree of the client with the nodes of the file tree of the server by taking the file tree of the server as a reference, and creating operation instructions according to the difference of the nodes.
26. A server, characterized in that it comprises a network data synchronization device based on operation instructions according to any of claims 20-25.
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| CN104994164A (en) * | 2015-07-08 | 2015-10-21 | 浪潮(北京)电子信息产业有限公司 | Method and device for statistics of catalog information |
| CN106657170A (en) * | 2015-10-28 | 2017-05-10 | 阿里巴巴集团控股有限公司 | Data synchronization method and device |
| CN107346338A (en) * | 2017-06-30 | 2017-11-14 | 武汉斗鱼网络科技有限公司 | File directory sort method and device |
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| CN102685148B (en) * | 2012-05-31 | 2014-10-15 | 清华大学 | Method for realizing secure network backup system under cloud storage environment |
| CN102811260B (en) * | 2012-08-10 | 2015-04-15 | 清华大学 | File cloud synchronizing system and method |
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| CN108829834A (en) * | 2018-06-19 | 2018-11-16 | 北京金山安全软件有限公司 | Method, device, electronic equipment and medium for remote data management |
| CN110768740A (en) * | 2019-10-29 | 2020-02-07 | 广州趣丸网络科技有限公司 | Time synchronization method and device |
| CN110768740B (en) * | 2019-10-29 | 2020-12-01 | 广州趣丸网络科技有限公司 | Time synchronization method and device |
| CN113094443A (en) * | 2021-05-21 | 2021-07-09 | 珠海金山网络游戏科技有限公司 | Data synchronization method and device |
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