CN113535664A - Database data synchronization method based on data page preloading - Google Patents
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Abstract
The invention relates to the technical field of data synchronization, in particular to a database data synchronization method based on data page preloading. Which comprises the following steps: updating a current database of the current device; identifying incremental data in the current database, combining the incremental data into a plurality of data packets by adopting a clustering encryption synchronization algorithm, encrypting each data packet and transmitting the data packet to synchronous databases of other equipment to realize data synchronization; a multithreading preloading algorithm is adopted through a network, so that a plurality of loading threads can simultaneously preload a plurality of data packets received by a synchronous database; and the viewing data decrypts the data packet to be viewed by adopting a thread conversion decryption algorithm and simultaneously preloads the data page of the data packet to be viewed in a centralized manner by a plurality of loading threads. According to the invention, the data page of the data packet to be viewed can be unlocked and viewed only after the password is identified to be correct, and meanwhile, the data page of the data packet to be viewed is preloaded in a centralized manner after the decryption password is received by a plurality of loading threads, so that the viewing speed is increased.
Description
Technical Field
The invention relates to the technical field of data synchronization, in particular to a database data synchronization method based on data page preloading.
Background
Data synchronization means that a palm computer can rapidly realize data synchronization and information sharing with a desktop computer and a notebook computer, so that the integrity and the uniformity of data are kept, wherein a database synchronization technology is an application system processing core, an application system needs to perform operations of adding, deleting and checking on a database, and a data warehouse needs to acquire different transaction data from a plurality of databases to perfect a data set of the database;
for example, chinese patent publication No. CN109977168A, discloses a database data synchronization method and apparatus based on data page preloading. The method comprises the following steps: receiving transaction operations to be synchronized by a target-end data synchronization service, classifying and caching according to IDs of the transaction operations, converting UPDATE operations and/or DELETE operations in the transactions into SELECT operations if a COMMIT operation log of a transaction represented by any ID is received, delivering the converted SELECT operations to a data page preloading thread, and asynchronously executing the converted SELECT operations by the data page preloading thread to realize data page preloading related to the transactions to be synchronized; and activating an execution thread, executing the pre-loaded transaction to be synchronized, and synchronizing the transaction to be synchronized. The database data synchronization method and device based on data page preloading can effectively improve the synchronization efficiency during database transaction synchronization.
However, when a data page is opened in a database for viewing, a user logs in the same account in different databases, and data synchronization of multiple databases is realized among the same accounts for the data, but others can view all the synchronized data through the accounts, so that some private data are leaked due to synchronization, the security is low, and the data page is temporarily loaded when viewing the data, so that the opening speed is slow, and a loading process needs to be waited when each data page is opened for viewing, so that the data viewing is time-consuming and labor-consuming.
Disclosure of Invention
The present invention is directed to a database data synchronization method based on data page preloading, so as to solve the problems in the background art mentioned above.
In order to achieve the above object, the present invention provides a database data synchronization method based on data page preloading, which includes the following steps:
a user logs in an account on a plurality of devices and updates a current database of the current device;
identifying incremental data in the current database, combining the incremental data into a plurality of data packets by adopting a clustering encryption synchronization algorithm, encrypting each data packet and transmitting the data packet to synchronous databases of other equipment to realize data synchronization;
a multithreading preloading algorithm is adopted through a network, so that a plurality of loading threads can simultaneously preload a plurality of data packets received by a synchronous database;
the viewing data adopts a thread conversion decryption algorithm to decrypt the data packet to be viewed and simultaneously collectively pre-loads the data pages of the data packet to be viewed by a plurality of loading threads;
the thread conversion decryption algorithm comprises the following steps:
calling a data packet to be checked to define as a data packet to be checked;
inputting a decryption password of the data packet to be seen, and unlocking the data packet to be seen;
and after receiving the decryption password, the multiple loading threads convert the direction of the loading threads, so that the multiple loading threads can collectively preload the data page of the data packet to be viewed.
Assuming that incremental data a = (a 1, a2,.., an) in the current database, wherein a1, a2,.., an are data packets, and data pages of the network preloaded data packets are represented as X = (X1, X2,..., xn), wherein X1, X2,..., xn are loading threads;
the network preloading X is corresponding to the incremental data A, a plurality of loading threads are respectively corresponding to a plurality of data packets, the network allocation is used for simultaneously preloading data pages for the plurality of data packets, and the expression is as follows: { (x 1 → a 1), (x 2 → a 2), (xn → an) };
when looking at the data packet ak to be looked at in the synchronous database, inputting a decryption password, after the network preloading X receives the correct decryption password, enabling a plurality of loading thread switching directions to simultaneously preload the data packet ak to be looked at, wherein the expression is as follows: { (x 1+ x2+. + xn) → ak };
to sum up, when the data of the current database is synchronized into the synchronous database, the data packet is encrypted, the data packet to be seen can be seen only by inputting a correct decryption password, the safety is improved, meanwhile, the data packet to be seen can be preloaded through switching directions of a plurality of loading threads, a network is enabled to concentrate on the data packet to be seen for preloading, the viewing efficiency is improved, and the waiting time for loading is avoided.
As a further improvement of the technical solution, the clustering encryption synchronization algorithm includes the following steps:
deeply mining incremental data in a current database, and comparing data before and after the current equipment is used, wherein the data which is excessive after the current equipment is used is the incremental data;
clustering the incremental data to realize the clustering and combination of the incremental data into a plurality of data packets;
and encrypting and transmitting the plurality of data packets to the synchronous database by adopting an encryption algorithm.
In the embodiment, when clustering encryption synchronization is performed, mass data in the current database can be compared front and back, incremental data are clustered, data of the same type are clustered together to form a plurality of data packets, the data packets are independent from each other and represent different contents, and then the data packets are encrypted and transmitted, so that data synchronization between the current database and the synchronous database is realized.
As a further improvement of the technical scheme, the incremental data clustering utilizes an encryption classification model, a training set is firstly established, the training set has a plurality of attributes, then the characteristics expressed by the incremental data are identified, the incremental data are subjected to correlation analysis in advance, attribute selection is realized, classification models with a plurality of attributes are established, then the incremental data with the same attribute are converted into data packets for storage, and finally the data packets needing to be encrypted are selected according to the attribute requirements for encryption transmission.
As a further improvement of the present technical solution, the attributes include important data attributes, general data attributes, and shared data attributes.
As a further improvement of the present technical solution, the encryption algorithm includes the following steps:
presetting a character string plaintext of a data packet;
converting a character string plaintext into a byte stream corresponding to a data packet code;
encrypting the byte stream to generate a ciphertext password;
the specific principle is as follows: for example, if the plaintext of the character string of the preset data packet is m, the m is converted into the byte stream corresponding to the data packet code, so that the byte stream is encrypted, a ciphertext password is generated, and when the subsequent check is performed, the corresponding byte stream can be opened only by inputting the corresponding plaintext m, so that the data page corresponding to the data packet code is checked.
As a further improvement of the present technical solution, the multithreading preload algorithm includes the steps of:
identifying the data page size of each data packet and generating a data packet size ratio value;
dividing the network preloading thread into a plurality of loading threads with the same size proportion value;
enabling each loading thread to pre-load data pages of data packets with the same proportion;
assuming a1, a2 and a3 packets, the data page sizes of the three packets are identified as b1, b2 and b3, and the generated size ratio value is b 1: b 2: b3, therefore, dividing the network preloading thread into b1+ b2+ b3 loading threads, wherein the loading thread of b1 loads the data page of a1 data packet, the loading thread of b2 loads the data page of a2 data packet, and the loading thread of b3 loads the data page of a3 data packet, so that the equal ratio distribution of the preloading threads is realized.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the database data synchronization method based on data page preloading, when the data page of the data packet to be viewed is viewed in the synchronous database, the decryption password corresponding to the data packet to be viewed needs to be input, the data page of the data packet to be viewed can be unlocked and viewed only after the password is identified to be correct, meanwhile, the data page of the data packet to be viewed is preloaded in a centralized manner after the decryption passwords are received by a plurality of loading threads, the data packet to be viewed can be preloaded in a centralized manner by a network, the data page of the data packet to be viewed can be loaded and completed more rapidly, the data page of the data packet to be viewed subsequently is convenient to view more rapidly, meanwhile, the decryption password known by a user person is used for decryption, and the safety is improved.
Drawings
FIG. 1 is an overall flow chart of example 1 of the present invention;
FIG. 2 is a flowchart of a thread switch decryption algorithm according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a thread transformation decryption algorithm according to embodiment 1 of the present invention;
FIG. 4 is a flowchart of the clustering encryption synchronization algorithm of embodiment 1 of the present invention;
FIG. 5 is a flowchart of the multithreading preload algorithm according to embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, the present embodiment provides a database data synchronization method based on data page preloading, including the following steps:
s1, a user logs in accounts on multiple devices and updates the current database of the current device, wherein the multiple device login accounts are the same account, and data are only limited to be synchronized among the same login accounts;
s2, identifying incremental data in the current database, combining the incremental data into a plurality of data packets by adopting a clustering encryption synchronization algorithm, encrypting and transmitting each data packet into the synchronous databases of other equipment to realize data synchronization, generating some incremental data to be stored in the current database when the current equipment is used, combining the incremental data into a plurality of data packets, encrypting and transmitting each data packet into other equipment which also logs in the same account, synchronizing the data into the synchronous databases of other equipment to be stored, and ensuring the basic function of the system;
specifically, as shown in fig. 3, the clustering encryption synchronization algorithm includes the following steps:
deeply mining incremental data in a current database, and comparing data before and after the current equipment is used, wherein the data which is excessive after the current equipment is used is the incremental data;
clustering the incremental data to realize the clustering and combination of the incremental data into a plurality of data packets;
and encrypting and transmitting the plurality of data packets to the synchronous database by adopting an encryption algorithm.
In the embodiment, when clustering encryption synchronization is performed, mass data in the current database can be compared front and back, incremental data are clustered, data of the same type are clustered together to form a plurality of data packets, the data packets are independent from each other and represent different contents, and then the data packets are encrypted and transmitted, so that data synchronization between the current database and the synchronous database is realized.
S3, a multithreading preloading algorithm is adopted through the network to enable a plurality of loading threads to simultaneously preload data pages for a plurality of data packets received by the synchronous database, when data are synchronized in the synchronous database, the plurality of loading threads can correspond to the plurality of data packets one by one under the condition of the network, the plurality of data packets are preloaded while the network is distributed evenly, and the progress of subsequently checking the data pages of the data packets is improved;
s4, the data to be viewed is decrypted by the data to be viewed through a thread conversion decryption algorithm, meanwhile, the data pages of the data packets to be viewed are preloaded in a centralized mode through a plurality of loading threads, when the data pages of the data packets to be viewed are viewed in a synchronous database, decryption passwords corresponding to the data packets to be viewed need to be input, the data pages of the data packets to be viewed can be unlocked and viewed only after the passwords are identified to be correct, meanwhile, the data pages of the data packets to be viewed are preloaded in a centralized mode through the decryption passwords received by the plurality of loading threads, the data packets to be viewed can be preloaded in a centralized mode through a network, the data pages of the data packets to be viewed can be loaded and completed more rapidly, the data pages of the data packets to be viewed are conveniently and rapidly viewed, meanwhile, decryption is carried out through the decryption passwords known by a user, and safety is improved;
specifically, as shown in fig. 2, the thread conversion decryption algorithm includes the following steps:
calling a data packet to be checked to define as a data packet to be checked;
the decryption password of the data packet to be viewed is input, the data packet to be viewed is unlocked, the data packet can be unlocked for viewing only when a user inputs a correct password, the safety is improved, the condition that a plurality of devices log in the same account to cause other people to view the synchronous data on the current device on other devices is avoided, and the data synchronization and viewing safety are improved;
the direction of the loading thread is converted after the plurality of loading threads receive the decryption password, so that the plurality of loading threads can collectively preload the data page of the data packet to be watched, the network loading efficiency of the data packet to be watched is improved, and the data page of the data packet to be watched can be conveniently and quickly watched;
as shown in fig. 3 in particular, assume that incremental data a = (a 1, a2,. and an) in the current database, where a1, a2,. and an are data packets, and a data page of the network preloaded data packet is represented as X = (X1, X2,. and xn), where X1, X2,. and xn are loading threads;
the network preloading X is corresponding to the incremental data A, a plurality of loading threads are respectively corresponding to a plurality of data packets, the network allocation is used for simultaneously preloading data pages for the plurality of data packets, and the expression is as follows: { (x 1 → a 1), (x 2 → a 2), (xn → an) };
when looking at the data packet ak to be looked at in the synchronous database, inputting a decryption password, after the network preloading X receives the correct decryption password, enabling a plurality of loading thread switching directions to simultaneously preload the data packet ak to be looked at, wherein the expression is as follows: { (x 1+ x2+. + xn) → ak };
to sum up, when the data of the current database is synchronized into the synchronous database, the data packet is encrypted, the data packet to be seen can be seen only by inputting a correct decryption password, the safety is improved, meanwhile, the data packet to be seen can be preloaded through switching directions of a plurality of loading threads, a network is enabled to concentrate on the data packet to be seen for preloading, the viewing efficiency is improved, and the waiting time for loading is avoided.
Example 2
Considering that when a user performs encryption transmission on a data packet, partial data encryption cannot be selected according to requirements, so that the influence of full data encryption on subsequent shared viewing is caused, when incremental data clustering is performed, an encryption classification model is adopted, wherein:
the incremental data clustering utilizes an encryption classification model, firstly a training set is established, the training set is provided with a plurality of attributes, then the characteristics expressed by the incremental data are identified, the incremental data are subjected to correlation analysis in advance, attribute selection is realized, classification models of the plurality of attributes are established, then the incremental data with the same attribute are converted into data packets for storage, and finally the data packets needing to be encrypted are selected according to attribute requirements for encryption transmission.
Wherein the attributes comprise important data attributes, general data attributes and shared data attributes;
the important data attributes indicate that incremental data leakage of the attributes has great influence on individuals, so that encryption is necessarily required during transmission;
the general data attribute indicates that the influence of incremental data leakage of the attribute on individuals is small, so that a user can independently select whether addresses are encrypted and synchronized during transmission;
the shared data attribute indicates that the leakage of incremental data of the attribute has no influence on individuals, so that the incremental data can be transmitted without encryption;
in conclusion, the encryption condition can be selected according to the characteristics of the incremental data when the current database is transmitted into the synchronous database, and inconvenience caused by subsequent checking is avoided.
Specifically, the encryption algorithm includes the following steps:
presetting a character string plaintext of a data packet;
converting a character string plaintext into a byte stream corresponding to a data packet code;
encrypting the byte stream to generate a ciphertext password;
the specific principle is as follows: for example, if the plaintext of the character string of the preset data packet is m, the m is converted into the byte stream corresponding to the data packet code, so that the byte stream is encrypted, a ciphertext password is generated, and when the subsequent check is performed, the corresponding byte stream can be opened only by inputting the corresponding plaintext m, so that the data page corresponding to the data packet code is checked.
Example 3
Considering that the data pages of different data packets have different sizes and different loading times, if the data pages of multiple data packets are loaded simultaneously, some data pages have longer preloading time and some data pages have shorter preloading time, which easily causes network congestion to affect the speed of the whole network in the larger data pages of the data packets, as shown in fig. 5, specifically:
the multi-threaded preload algorithm comprises the steps of:
identifying the data page size of each data packet and generating a data packet size ratio value;
dividing the network preloading thread into a plurality of loading threads with the same size proportion value;
each loading thread can preload the data pages of the data packets with the same proportion, so that the preloading time of the data pages of a plurality of data packets is ensured to be the same, network congestion caused by the fact that a smaller loading thread loads a larger data page is avoided, and the loading speed is increased.
Assuming a1, a2 and a3 packets, the data page sizes of the three packets are identified as b1, b2 and b3, and the generated size ratio value is b 1: b 2: b3, therefore, dividing the network preloading thread into b1+ b2+ b3 loading threads, wherein the loading thread of b1 loads the data page of a1 data packet, the loading thread of b2 loads the data page of a2 data packet, and the loading thread of b3 loads the data page of a3 data packet, so that the equal ratio distribution of the preloading threads is realized.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A database data synchronization method based on data page preloading is characterized by comprising the following steps:
a user logs in an account on a plurality of devices and updates a current database of the current device;
identifying incremental data in the current database, combining the incremental data into a plurality of data packets by adopting a clustering encryption synchronization algorithm, encrypting each data packet and transmitting the data packet to synchronous databases of other equipment to realize data synchronization;
a multithreading preloading algorithm is adopted through a network, so that a plurality of loading threads can simultaneously preload a plurality of data packets received by a synchronous database;
the viewing data adopts a thread conversion decryption algorithm to decrypt the data packet to be viewed and simultaneously collectively pre-loads the data pages of the data packet to be viewed by a plurality of loading threads;
the thread conversion decryption algorithm comprises the following steps:
calling a data packet to be checked to define as a data packet to be checked;
inputting a decryption password of the data packet to be seen, and unlocking the data packet to be seen;
and after receiving the decryption password, the multiple loading threads convert the direction of the loading threads, so that the multiple loading threads can collectively preload the data page of the data packet to be viewed.
2. The database data synchronization method based on data page preloading according to claim 1, characterized in that: the clustering encryption synchronization algorithm comprises the following steps:
deeply mining incremental data in the current database;
clustering the incremental data to realize the clustering and combination of the incremental data into a plurality of data packets;
and encrypting and transmitting the plurality of data packets to the synchronous database by adopting an encryption algorithm.
3. The database data synchronization method based on data page preloading according to claim 2, characterized in that: the incremental data clustering utilizes an encryption classification model, firstly a training set is established, the training set is provided with a plurality of attributes, then the characteristics expressed by the incremental data are identified, the incremental data are subjected to correlation analysis in advance, attribute selection is realized, classification models of the plurality of attributes are established, then the incremental data with the same attribute are converted into data packets for storage, and finally the data packets needing to be encrypted are selected according to attribute requirements for encryption transmission.
4. The database data synchronization method based on data page preloading according to claim 3, characterized in that: the attributes include important data attributes, general data attributes, and shared data attributes.
5. The database data synchronization method based on data page preloading according to claim 2, characterized in that: the encryption algorithm comprises the following steps:
presetting a character string plaintext of a data packet;
converting a character string plaintext into a byte stream corresponding to a data packet code;
the byte stream is encrypted to generate a ciphertext password.
6. The database data synchronization method based on data page preloading according to claim 1, characterized in that: the multi-threaded preload algorithm comprises the steps of:
identifying the data page size of each data packet and generating a data packet size ratio value;
dividing the network preloading thread into a plurality of loading threads with the same size proportion value;
each load thread is caused to preload data pages of the same proportion of data packets.
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