CN107784016A - Data syn-chronization control device and data synchronous system and method - Google Patents
Data syn-chronization control device and data synchronous system and method Download PDFInfo
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Abstract
The embodiment of the present disclosure provides a kind of data syn-chronization control device and data synchronous system and method.Methods described includes：Data flow in configuration system between back end, generate data flow configuration information；The data flow configuration information and the first back end and the origin marking of the data in the second back end are read, incremental data control information is generated according to the data flow configuration information and the origin marking of the data；Incremental data is generated according to the incremental data control information, the incremental data is sent to second back end and updates the origin marking of incremental data described in second back end.The method provided using the embodiment of the present disclosure can solve the problems, such as data backflow caused by data back conduction and circulation conduction, so as to reduce resource needed for data storage, improving data transmission efficiency, reduce the occupancy of network bandwidth resources.
Description
Technical field
The embodiment of the present disclosure is related to processing data information technical field, more particularly to a kind of data syn-chronization control device sum
According to synchronization system and method.
Background technology
At present, between numerous operation systems of enterprises, many times need progress high-volume data interaction (non-to disappear
Cease the mode of interface).Data syn-chronization between two operation systems, existing one-way synchronization, also there is bi-directional synchronization, these data
Interactive operation system constitutes the network structure of complexity, causes the problem of data backflow during data syn-chronization be present, i.e., with a
Data are synchronized in operation system B from operation system A, and situation about being back to from operation system B in operation system A occurs.
The method of existing data syn-chronization is very simple, i.e., data by full dose or incremental mode by data from operation system
A is synchronized in operation system B.So-called full dose mode, i.e., the total data of a table is disposably synchronized to from operation system A
In operation system B；So-called incremental mode, i.e., first judge operation system A data generation time, every time only will be in some time
Data syn-chronization after point is into operation system B.
During the present invention is realized, inventor has found problems with the prior art be present：
Between two operation systems during data syn-chronization, the source of incremental data is not considered, causes data backflow；Forming
During multiple operation system data syn-chronizations of network structure, the situation of datacycle conduction is not considered, causes indirect data backflow.
Therefore, prior art can not solve the problems, such as data backflow caused by data back conduction and circulation conduction, meeting
Causing the efficiency of storage resource, the waste of Internet resources and data transfer reduces, and can not effectively manage multiple industry on the whole
Data syn-chronization between business system.
The content of the invention
In view of this, the embodiment of the present disclosure provides a kind of data syn-chronization control device and data synchronous system and method, uses
Data backflow caused by solve the problems, such as data back conduction and circulation conduction.
According to the first aspect of the embodiment of the present disclosure, there is provided a kind of data syn-chronization control device, including：
Data flow configuration module, for the data flow between back end in configuration system, generation data flow is matched somebody with somebody
Confidence ceases；
Incremental data control module, for reading the data flow configuration information and the first back end and the second number
According to the origin marking of the data in node, increment is generated according to the data flow configuration information and the origin marking of the data
Data control information, and the incremental data control information is sent to first back end,
It is additionally operable to update the origin marking for the incremental data that first back end is sent to second back end.
Preferably, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark,
Wherein, the data flow validity identify for represent the source data node and the purpose back end it
Between data flow it is whether effective.
Preferably, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
Preferably, the incremental data control module includes：
Data flow judging unit, for the number in the data flow configuration information and second back end
According to origin marking, judge first back end whether need to second back end send data；
First data screening unit, the number corresponding to the data in the second back end of first condition is met for acquisition
According to generation node information,
Wherein, the first condition is that data generate the time more than or equal to the first number in origin marking in the second back end
According to the initial time of node the last time data syn-chronization, and data renewal time, this data was same more than or equal to the second back end
The initial time of step；
Second data screening unit, the information searching for generating node according to the data meet the first of second condition
Data in back end, the incremental data control information is generated according to the data found,
Wherein, it is not described corresponding that the second condition, which is that data generate node in origin marking in the first back end,
Data generate node or second back end, and data generation time or data renewal time are more than or equal to the first data section
The initial time of the last data syn-chronization of point；
Control information transmitting element, for sending the incremental data control information to first back end；
Origin marking updating block, the increment sent for updating first back end to second back end
The data source node of data is the first back end, and the data renewal time for updating the incremental data is the second back end
Receive the incremental data time or the second back end complete to the incremental data storage time.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of data synchronous system, including：
Data syn-chronization control device according to the first aspect of the embodiment of the present disclosure；
First back end, for generating incremental data according to the incremental data control information, to second data
Node sends the incremental data；
Second back end, the incremental data sent for storing first back end.
According to the third aspect of the embodiment of the present disclosure, there is provided a kind of method of data synchronization, including：
Data flow in configuration system between back end, generate data flow configuration information；
Read the data flow configuration information and the source of the first back end and the data in the second back end
Mark, incremental data control information is generated according to the data flow configuration information and the origin marking of the data；
Incremental data is generated according to the incremental data control information, the incremental number is sent to second back end
According to and update the origin marking of incremental data described in second back end.
Preferably, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark,
Wherein, the data flow validity identify for represent the source data node and the purpose back end it
Between data flow it is whether effective.
Preferably, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
Preferably, it is described that incremental data control is generated according to the data flow configuration information and the origin marking of the data
Information processed includes：
The origin marking of data in the data flow configuration information and second back end, described in judgement
Whether the first back end needs to send data to second back end；
In the case where first back end needs to send data to second back end, according to described first
The origin marking of data in back end and the origin marking of the data in second back end generate the incremental number
According to control information.
Preferably, the source mark of the data in the data flow configuration information and second back end
Note, judges whether first back end needs to include to second back end transmission data：
Judge using first back end as source data node, using second back end as purpose back end
Whether data flow is effective；
Using first back end as source data node, the number using second back end as purpose back end
In the case of flowing to effectively, if data source node is the number of all data of the first back end in the second back end
The initial time of second back end this data syn-chronization is respectively less than according to renewal time, then the first back end is needed to the second number
Data are sent according to node.
Preferably, in the origin marking and second back end of the data in first back end
The origin markings of data generate the incremental data control information and include：
Acquisition meets the information of the data generation node corresponding to the data in the second back end of first condition,
Wherein, the first condition is that data generate the time more than or equal to the first number in origin marking in the second back end
According to the initial time of node the last time data syn-chronization, and data renewal time, this data was same more than or equal to the second back end
The initial time of step；Meet the number in the first back end of second condition according to the information searching of data generation node
According to, the incremental data control information is generated according to the data found,
Wherein, it is not described corresponding that the second condition, which is that data generate node in origin marking in the first back end,
Data generate node or second back end, and data generation time or data renewal time are more than or equal to the first data section
The initial time of the last data syn-chronization of point.
Preferably, data source mark includes in the second tables of data of the renewal：
The data source node for updating the incremental data that first back end is sent to second back end is
First back end, the data renewal time for updating the incremental data receive the incremental data for the second back end
Time or the second back end complete the time to incremental data storage.According to the fourth aspect of the embodiment of the present disclosure, carry
For a kind of data syn-chronization control device, including at least one processor, the data storage with least one relational processor, with
And one group of instruction in data storage, wherein the instruction at least one computing device data storage is to hold
The following operation of row：Data flow in configuration system between back end, generate data flow configuration information；Read the data
Configuration information and the first back end and the origin marking of the data in the second back end are flowed to, according to the data flow
Configuration information and the origin marking of data generation incremental data control information；Generated according to the incremental data control information
Incremental data, send the incremental data to second back end and update incremental number described in second back end
According to origin marking.
As seen from the above technical solution, the embodiment of the present disclosure can solve the problem that number caused by data back conduction and circulation conduction
According to reflux problem, so as to reduce resource needed for data storage, improving data transmission efficiency, the occupancy of network bandwidth resources is reduced.
In the embodiment of the present disclosure, between two back end in the case of data syn-chronization, saved by being generated according to data
Point screens to incremental data, solves the problems, such as data backflow；Between multisystem in the case of data syn-chronization, pass through basis
Data flow configuration information and origin marking are screened to incremental data, and data backflow caused by solving datacycle conduction is asked
Topic.So as to reduce resource needed for data storage, improving data transmission efficiency, the occupancy of network bandwidth resources is reduced.
Brief description of the drawings
By referring to description of the following drawings to the embodiment of the present disclosure, the above-mentioned and other purpose of the embodiment of the present disclosure,
Feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the flow chart for the method for data synchronization that the embodiment of the present disclosure provides；
Fig. 2 is the flow chart for the method for data synchronization that the embodiment of the present disclosure provides；
Fig. 3 is the structural representation for the data syn-chronization control device that the embodiment of the present disclosure provides；
Fig. 4 is the structural representation for the data synchronous system that the embodiment of the present disclosure provides；
Fig. 5 is the structural representation for the data syn-chronization control device that the embodiment of the present disclosure provides.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present disclosure is clearly and completely described.Obviously, institute
The embodiment of description is only disclosure part of the embodiment, rather than whole embodiments.Based on the embodiment in the disclosure,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not paid, belongs to this public affairs
Open the scope of protection.
Flow chart, block diagram in accompanying drawing illustrate the method, system, the possible system frame of device of the embodiment of the present invention
Frame, function and operation, the square frame on flow chart and block diagram can represent a module, program segment or only one section of code, institute
It is all the executable instruction for realizing regulation logic function to state module, program segment and code.It should also be noted that described realize rule
Determining the executable instruction of logic function can reconfigure, so as to generate new module and program segment.Therefore accompanying drawing square frame with
And square frame order is used only to the process and step of preferably diagram embodiment, without should be in this, as the limit to invention itself
System.
Fig. 1 be the embodiment of the present disclosure provide method of data synchronization flow chart, as shown in figure 1, methods described specifically by
Following steps are realized：
In step S101, the data flow in configuration system between back end, data flow configuration information is generated.
In certain embodiments, the data flow configuration information includes：Source data node, purpose back end and data
Flow to validity mark.
Wherein, the data flow validity identify for represent the source data node and the purpose back end it
Between data flow it is whether effective.
For example, can be by the data flow configuration information record of generation into a configuration file, the configuration file can
Think a form with gauge outfit with set form.The part for intercepting the form is as follows：
| Source data node | Purpose back end | Data flow validity identifies |
| A | B | 1 |
| A | C | 0 |
| A | D | 0 |
| A | E | 0 |
It is as implied above, it is known that to have a source data node A, purposeful back end B, C, D, E on the other side, pass through reading
Source data node A identifies with the data flow validity after each purpose back end B, C, D, E, just may determine that corresponding
Whether the data flow between two back end is effective.Such as upper table, the data after source data node A and purpose back end B
Flow to validity and be identified as 1, then it represents that source data node A to purpose back end B data flow is effective；Source data section
Data flow validity mark after point A and purpose back end C, D, E is 0, then it represents that source data node A to purpose number
Data flow according to node C, D, E is invalid.
If there are 5 back end, i.e. A, B, C, D, E in the entire system, then in a complete configuration file
B, C, D, E can be recorded respectively as source data node, other back end beyond source data node are as purpose back end
When data flow validity mark, rule is same as above.When having N number of back end in whole system, active data node, mesh are included
Back end and data flow validity mark configuration record number M be data section points N permutation and combination two-by-two, that is, meet
Below equation：
In step s 102, read in the data flow configuration information and the first back end and the second back end
Data origin marking, according to the data flow configuration information and the origin marking of the data generation incremental data control
Information.
In certain embodiments, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
It can be realized by increasing the design method of origin marking this field in the tables of data that is stored in back end newly.
For example, the table structure of the original field of the tables of data stored in back end is：
| Field 1 | Field 2 | Field 3 |
Then increase newly table structure after origin marking field can design it is as follows：
4 fields of the above need to set in the table of data syn-chronization in each back end in network.
In certain embodiments, it is described to be increased according to the data flow configuration information and the generation of the origin marking of the data
Amount data control information includes：
The origin marking of data in the data flow configuration information and second back end, described in judgement
Whether the first back end needs to send data to second back end；
In the case where first back end needs to send data to second back end, according to described first
The origin marking of data in back end and the origin marking of the data in second back end generate the incremental number
According to control information.
In certain embodiments, the data in the data flow configuration information and second back end
Origin marking, judge first back end whether need to second back end send data include：
Judge using first back end as source data node, using second back end as purpose back end
Whether data flow is effective；
Using first back end as source data node, the number using second back end as purpose back end
In the case of flowing to effectively, if data source node is the number of all data of the first back end in the second back end
The initial time of second back end this data syn-chronization is respectively less than according to renewal time, then the first back end is needed to the second number
Data are sent according to node.
For example, have 5 back end, i.e. A, B, C, D, E in the entire system, wherein, A back end to B data node
Data flow validity be identified as 1, i.e. the data flow of A back end to B data node is effective, with A back end to B numbers
Exemplified by the data syn-chronization of node, the step of generating incremental data control information is described in detail, the step includes：
In step a, reading data flow retrieves A back end to the data flow of B data node to configuration information
Validity is identified as 1, then the data flow for judging A back end to B data node is effectively flow direction, performs step b, otherwise ties
Data syn-chronization of the beam A back end to B data node.
In stepb, it is data in origin marking field to read the affiliated field in the tables of data stored in B data node
The data message of two fields of source Nodes and data renewal time, if data source node is A back end, and data are more
The new time before the t2 moment (initial time of this data syn-chronization of B data node), then judges A back end to B data
The data syn-chronization of node does not start, performs step c, if data source node is A back end, and data renewal time is in t2
After moment or t2 moment, then judge that the data syn-chronization of A back end to B data node has been completed, terminate A back end to B
The data syn-chronization of back end.
In step c, for reading data flow to configuration information, it is B data node and data flow to obtain purpose back end
Validity is identified as corresponding source data node in 1 configuration information.It is as follows to inquire about data flow configuration information result：
| Source data node | Purpose back end | Data flow validity identifies |
| A | B | 1 |
| C | B | 1 |
I.e. corresponding source data node has A back end and C data node, and record is except the source data section of this data syn-chronization
Other source data nodes (C data node) of point (A back end) outside are arrived in " variable list ", if other multiple source datas
It node, will recorded in " variable list ", then perform step d.
In step d, the affiliated field read in the tables of data stored in B data node is data source node and data
The data message of renewal time, successively for the source data node listed by " variable list " of previous step record (in this example only
Have a C data node) carry out following judgement：
If data source node is C data node, and data renewal time before the t2 moment, then set " variable
" denotation of variable " of C data node is 0 in list ", represents that the synchrodata of C data node to B data node does not start；Such as
Fruit data source node is C, and data renewal time after t2 moment or t2 moment, then C data in " variable list " is set
" denotation of variable " of node is 1, represents that the synchrodata of C data node to B data node has been completed.If previous step records
" variable list " in also have other source data nodes, then continue to judge, until " variable list " in whole source data nodes
" denotation of variable " be all provided with, perform step e.
In step e, first time inquiry is carried out first, is met simultaneously in the tables of data for the middle storage for inquiring about A back end
The data of following condition：
The data of condition 1. generation node is not B data node；
The data of condition 2. generate the time at t1 moment (initial time of A back end the last time data syn-chronizations) or t1
After quarter；
The data source systems of condition 3. be not in " variable list " " denotation of variable " be 1 source data node (in this example, such as
" denotation of variable " of C data node is 1 in fruit " variable list ", represents that the synchrodata of C data node to B data node is complete
Into then data source systems can not be C data node)；
Data of the data renewal time of condition 4. after t1 moment or t1 moment.
Then, data generation node and the data life of all data in the tables of data stored in B data node are obtained
The time is generated into maximum data corresponding to node, i.e., generates the time closest to the data to current time.For example, data generation section
Point is A back end, then its corresponding maximum data generation time is all data that node is generated by data of A back end
Data in the corresponding data generation time closest to current time generate the time.
Finally, carry out second to inquire about, inquired about on the basis of being inquired about in first time：
In α first time Query Results, data generate the number occurred in the tables of data that node does not store in B data node
According to.
In β first time Query Results, meet the data of following conditions：
Occur in the tables of data that data generation node stores in B data node, and aforementioned data generates node (in B numbers
Generate node according to the data that occur in the tables of data stored in node) corresponding to the data generation time be more than aforementioned data generation section
The corresponding maximum data generation time, (data closest to current time generated in the tables of data that point stores in B data node
Time).
The above two parts data α and β intersection, as the result of second of inquiry, according to the knot of second of inquiry
Fruit generates incremental data control information.
In certain embodiments, the origin marking of the data in first back end and second number
Generating the incremental data control information according to the origin marking of the data in node includes：
Acquisition meets the information of the data generation node corresponding to the data in the second back end of first condition；According to
The information searching of the data generation node meets the data in the first back end of second condition, according to the data found
Generate the incremental data control information.
Wherein, the first condition is that data generate the time more than or equal to the first number in origin marking in the second back end
According to the initial time of node the last time data syn-chronization, and data renewal time, this data was same more than or equal to the second back end
The initial time of step；It is not described corresponding that the second condition, which is that data generate node in origin marking in the first back end,
Data generate node or second back end, and data generation time or data renewal time are more than or equal to the first data section
The initial time of the last data syn-chronization of point.
For example, as a kind of alternative scheme, above-mentioned steps b is met, judges A back end to the data of B data node
It is synchronous not start, perform step f.
In step f, inquire about in B data node data in the tables of data stored and generate the time in t1 moment (A back end
The initial time of the last data syn-chronization) or the t1 moment after, and data renewal time is after t2 moment or t2 moment
Data generation node corresponding to data；
Data generation node is not the above-mentioned data generation node inquired in the tables of data stored in inquiry A back end
Or B data node, and data after t1 moment or t1 moment of data generation time or data renewal time, according to inquiring
Data generation incremental data control information.
In step s 103, incremental data is generated according to the incremental data control information, to second back end
Send the incremental data and update the origin marking of incremental data described in second back end.
In certain embodiments, data source mark includes in the second tables of data of the renewal：
The data source node for updating the incremental data that first back end is sent to second back end is
First back end, the data renewal time for updating the incremental data receive the incremental data for the second back end
Time or the second back end complete the time to incremental data storage.
For example, incremental data is generated according to incremental data control information by A back end, and synchronous transfer is to B data section
Point, while update in the tables of data comprising incremental data of B data node storage.Wherein, data generation node and data generation
Time takes the field information in incremental data, and data source node takes A back end, and data renewal time is updated to B data section
Point receives the time t3 (may be overlapped with the t2 moment, it is also possible to after instant t 2) of the incremental data.Terminate this A number
Data syn-chronization according to node to B data node.
The method of data synchronization that the embodiment of the present disclosure provides, by configuring the data flow in system between back end,
Origin marking is added to data, according to the data flow, when the data that the origin marking includes generate node, data generation
Between, data source node and data renewal time logic judgment is carried out to incremental data on the basis of increment synchronization, solve
Data backflow problem caused by data back is conducted and circulation is conducted.
Fig. 2 be the embodiment of the present disclosure provide method of data synchronization flow chart, as shown in Fig. 2 methods described specifically by
Following steps are realized：
In step s 201, the data flow in configuration system between back end, data flow configuration information is generated.
In certain embodiments, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark.
Wherein, the data flow validity identify for represent the source data node and the purpose back end it
Between data flow it is whether effective.
In an optional embodiment, the data flow validity is identified as the 1 expression source data node and described
Data flow between purpose back end is effective, the data flow validity be identified as the 0 expression source data node and
Data flow between the purpose back end is invalid.
For example, A nodes are source data node, B node is purpose back end.Data flow validity is identified as 1 expression A
The data flow of node to B node is effective.
In an optional embodiment, the data flow configuration information can be stored in a readable documents, after convenient
Continuous step, which is called, to be read.
In step S202, read in the data flow configuration information and the first back end and the second back end
Data origin marking.
In certain embodiments, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
In step S203, judge using first back end as source data node, using second back end as
Whether the data flow of purpose back end is effective.Step S204 is carried out if effectively, otherwise carries out step S206.
In step S204, judge that data source node is all data of the first back end in the second back end
Whether data renewal time is respectively less than the initial time of second back end this data syn-chronization.If then carrying out step S205,
Otherwise step S206 is carried out.
Data source node is small for the data renewal time of all data of the first back end in second back end
In the initial time of second back end this data syn-chronization, then illustrate that the first back end is not synchronous to the second back end.
In step S205, the data generation section corresponding to the data met in the second back end of first condition is obtained
The information of point.
In certain embodiments, the first condition is that the data generation time is more than in origin marking in the second back end
Equal to the initial time of first back end the last time data syn-chronization, and data renewal time is more than or equal to the second back end
The initial time of this data syn-chronization.
In an optional embodiment, the information of the data generation node includes：In this data of the second back end
In synchronous process, the data syn-chronization generated is given to the second back end by other paths outside the first back end
Back end title or mark.
In step S206, the data syn-chronization between the first back end and the second back end is skipped.
In certain embodiments, after skipping the data syn-chronization between the first back end and the second back end, can continue
Data syn-chronization of other back end with the second back end is carried out according to methods described.In this data of the second back end
After synchronously completing, the synchronization between other back end is carried out.
In step S207, the first back end of second condition is met according to the information searching of data generation node
In data, generate the incremental data control information according to the data that find.
In certain embodiments, it is not the corresponding data that the second condition, which is that data generate node in origin marking,
Node or second back end are generated, and data generation time or data renewal time are more than or equal to the first back end most
The initial time of a nearly data syn-chronization.
In an optional embodiment, the incremental data control information include institute it is in need the second back end this
Index or storage location of the data of the second back end in the first back end are sent in data synchronization process.
In step S208, incremental data is generated according to the incremental data control information, to second back end
Send the incremental data.
In an optional embodiment, incremental number is generated according to the incremental data control information by the first back end
According to second back end transmission incremental data.
In step S209, the data source node for updating incremental data is the first back end, and data renewal time is
Second back end receive the incremental data time or the second back end complete to the incremental data storage when
Between.
In an optional embodiment, the renewal described in step S209 is in the first back end according to the incremental data
Control information is carried out while generating incremental data.
In an optional embodiment, the renewal described in step S209 is sending the increasing to second back end
Carried out after amount data.
The method of data synchronization that the embodiment of the present disclosure provides, is judged by multilayer logic, filters out qualified data,
Incremental data is generated according only to the selection result, the data that can cause data backflow problem is not regenerated, fundamentally reduces data
Resource needed for storage, improving data transmission efficiency, reduce the occupancy of network bandwidth resources.
Secondly, the scope of application of methods described is not limited to the type of application system (transactional, analytic type), data storage
The different deployment way of mode (database table, data file) and system (with ground, strange land), as long as may be constructed data flow
To system, data backflow problem can be avoided by this method.
Fig. 3 is the structural representation for the data syn-chronization control device that the embodiment of the present disclosure provides, as shown in figure 3, data are same
Step control device 30 includes：Data flow configuration module 301 and incremental data control module 302, incremental data control module 302
Including：Data flow judging unit 3021, the first data screening unit 3022, the second data screening unit 3023, control information
Transmitting element 3024 and origin marking updating block 3025.
Data flow configuration module 301 is used for the data flow between back end in configuration system, generates data flow
Configuration information.
In certain embodiments, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark.
Wherein, the data flow validity identify for represent the source data node and the purpose back end it
Between data flow it is whether effective.
For example, can be by the data flow configuration information record of generation into a configuration file, the configuration file can
Think a form with gauge outfit with set form.The part for intercepting the form is as follows：
It is as implied above, it is known that to have a source data node A, purposeful back end B, C, D, E on the other side, pass through reading
Source data node A identifies with the data flow validity after each purpose back end B, C, D, E, just may determine that corresponding
Whether the data flow between two back end is effective.Such as upper table, the data after source data node A and purpose back end B
Flow to validity and be identified as 1, then it represents that source data node A to purpose back end B data flow is effective；Source data section
Data flow validity mark after point A and purpose back end C, D, E is 0, then it represents that source data node A to purpose number
Data flow according to node C, D, E is invalid.
If there are 5 back end, i.e. A, B, C, D, E in the entire system, then in a complete configuration file
B, C, D, E can be recorded respectively as source data node, other back end beyond source data node are as purpose back end
When data flow validity mark, rule is same as above.When having N number of back end in whole system, active data node, mesh are included
Back end and data flow validity mark configuration record number M be data section points N permutation and combination two-by-two, that is, meet
Below equation：
Data flow judging unit 3021 is used for according in the data flow configuration information and second back end
Data origin marking, judge first back end whether need to second back end send data.
In certain embodiments, source is added by using the design method that origin marking field is added to tables of data
Mark in table, it is necessary to increase by four fields：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
Four fields of the above are referred to as origin marking field, need data syn-chronization in each back end in systems
It will be set in table.
For example, the table structure of the original field of the tables of data stored in back end is：
| Field 1 | Field 2 | Field 3 |
Then increase newly table structure after origin marking field can design it is as follows：
4 fields of the above need to set in the table of data syn-chronization in each back end in network.
For example, judge first back end whether need to second back end send data can by with
Lower step is completed：
In step a, reading data flow retrieves A back end to the data flow of B data node to configuration information
Validity is identified as 1, then the data flow for judging A back end to B data node is effectively flow direction, performs step b, otherwise ties
Data syn-chronization of the beam A back end to B data node.
In stepb, it is data in origin marking field to read the affiliated field in the tables of data stored in B data node
The data message of two fields of source Nodes and data renewal time, if data source node is A back end, and data are more
The new time before the t2 moment (initial time of this data syn-chronization of B data node), then judges A back end to B data
The data syn-chronization of node does not start, it is necessary to send data to second back end；If data source node is A data sections
Point, and data renewal time after t2 moment or t2 moment, then judge A back end to B data node data syn-chronization
Complete, terminate A back end to the data syn-chronization of B data node.
First data screening unit 3022 is used to obtain corresponding to the data met in the second back end of first condition
Data generation node information.
Wherein, the first condition is that data generate the time more than or equal to the first number in origin marking in the second back end
According to the initial time of node the last time data syn-chronization, and data renewal time, this data was same more than or equal to the second back end
The initial time of step.
For example, meeting above-mentioned steps b, judge that the data syn-chronization of A back end to B data node does not start, perform step c.
In step c, inquire about in B data node data in the tables of data stored and generate the time in t1 moment (A back end
The initial time of the last data syn-chronization) or the t1 moment after, and data renewal time is after t2 moment or t2 moment
Data generation node corresponding to data；
The information searching that second data screening unit 3023 is used to generate node according to the data meets second condition
Data in first back end, the incremental data control information is generated according to the data found.
Wherein, it is not described corresponding that the second condition, which is that data generate node in origin marking in the first back end,
Data generate node or second back end, and data generation time or data renewal time are more than or equal to the first data section
The initial time of the last data syn-chronization of point.
For example, meeting above-mentioned steps c, in step d, data generation node in the tables of data stored is inquired about in A back end
It is not the above-mentioned data generation node or B data node inquired, and data generation time or data renewal time are at the t1 moment
Or the data after the t1 moment, generate incremental data control information according to the data inquired.
In certain embodiments, incremental data control module 302 can only include a data screening unit, foregoing one
The structure of data screening unit, function and it is not limited to the first data screening unit 3022 and the second data with the relation of other modules
Structure, function and the relation with other modules of screening unit 3023.For example, a foregoing data screening unit can by with
Lower step generates incremental data control information according to the data flow configuration information and the origin marking of the data：
Above-mentioned steps b is met, in step e, for reading data flow to configuration information, it is B data section to obtain purpose back end
Put and data flow validity is identified as corresponding source data node in 1 configuration information.Inquire about data flow configuration information knot
Fruit is as follows：
| Source data node | Purpose back end | Data flow validity identifies |
| A | B | 1 |
| C | B | 1 |
I.e. corresponding source data node has A back end and C data node, and record is except the source data section of this data syn-chronization
Other source data nodes (C data node) of point (A back end) outside are arrived in " variable list ", if other multiple source datas
It node, will recorded in " variable list ", then perform step f.
In step f, the affiliated field read in the tables of data stored in B data node is data source node and data
The data message of renewal time, successively for the source data node listed by " variable list " of previous step record (in this example only
Have a C data node) carry out following judgement：
If data source node is C data node, and data renewal time before the t2 moment, then set " variable
" denotation of variable " of C data node is 0 in list ", represents that the synchrodata of C data node to B data node does not start；Such as
Fruit data source node is C, and data renewal time after t2 moment or t2 moment, then C data in " variable list " is set
" denotation of variable " of node is 1, represents that the synchrodata of C data node to B data node has been completed.If previous step records
" variable list " in also have other source data nodes, then continue to judge, until " variable list " in whole source data nodes
" denotation of variable " be all provided with, perform step g.
In step g, first time inquiry is carried out first, is met simultaneously in the tables of data for the middle storage for inquiring about A back end
The data of following condition：
The data of condition 1. generation node is not B data node；
The data of condition 2. generate the time at t1 moment (initial time of A back end the last time data syn-chronizations) or t1
After quarter；
The data source systems of condition 3. be not in " variable list " " denotation of variable " be 1 source data node (in this example, such as
" denotation of variable " of C data node is 1 in fruit " variable list ", represents that the synchrodata of C data node to B data node is complete
Into then data source systems can not be C data node)；
Data of the data renewal time of condition 4. after t1 moment or t1 moment.
Then, data generation node and the data life of all data in the tables of data stored in B data node are obtained
The time is generated into maximum data corresponding to node, i.e., generates the time closest to the data to current time.For example, data generation section
Point is A back end, then its corresponding maximum data generation time is all data that node is generated by data of A back end
Data in the corresponding data generation time closest to current time generate the time.
Finally, carry out second to inquire about, inquired about on the basis of being inquired about in first time：
In α first time Query Results, data generate the number occurred in the tables of data that node does not store in B data node
According to.
In β first time Query Results, meet the data of following conditions：
Occur in the tables of data that data generation node stores in B data node, and aforementioned data generates node (in B numbers
Generate node according to the data that occur in the tables of data stored in node) corresponding to the data generation time be more than aforementioned data generation section
The corresponding maximum data generation time, (data closest to current time generated in the tables of data that point stores in B data node
Time).
The above two parts data α and β intersection, as the result of second of inquiry, as meet the first of second condition
Data in back end.Incremental data control information is generated according to the result of second of inquiry.
Control information transmitting element 3024 is used to send the incremental data control information to first back end.
The data source node that origin marking updating block 3025 is used to update incremental data is the first back end, data
Renewal time is the initial time of second back end this data syn-chronization.
For example, incremental data is generated according to incremental data control information by A back end, and synchronous transfer is to B data section
Point, while update in the tables of data comprising incremental data of B data node storage.Wherein, data generation node and data generation
Time takes the field information in incremental data, and data source node takes A back end, and data renewal time is updated to B data section
Point receives the time t3 (may be overlapped with the t2 moment, it is also possible to after instant t 2) of the incremental data.Terminate this A number
Data syn-chronization according to node to B data node.
Said apparatus can be placed on back end, can also be placed in independently of in back end other equipment.
The data syn-chronization control device that the embodiment of the present disclosure provides, can be realized by configuring in system between back end
Data flow, read the origin markings of data, according to the data flow, data generation section that the origin marking includes
Point, data generation time, data source node and data renewal time are patrolled incremental data on the basis of increment synchronization
Collect and judge, filter out the incremental data that will not cause data backflow.Number caused by solving data back conduction and circulation conduction
According to reflux problem.
Secondly, the scope of application of described device is not limited to the type of application system (transactional, analytic type), data storage
The different deployment way of mode (database table, data file) and system (with ground, strange land), as long as may be constructed data flow
To system, data backflow problem can be avoided by the present apparatus.
Fig. 4 is the structural representation for the data synchronous system that the embodiment of the present disclosure provides, as shown in figure 4, the system bag
Include：Data syn-chronization control device 30, the first back end 401 and the second back end 402.
First back end 401 is used to generate incremental data according to the incremental data control information, to the described second number
The incremental data is sent according to node.
Second back end 402 is used to store the incremental data that first back end is sent.
The data synchronous system that the embodiment of the present disclosure provides, can be realized by configuring the number in system between back end
According to flow direction, origin marking is added to data, reads the origin marking of data, according to the data flow, the origin marking bag
Data generation node, data generation time, data source node and the data renewal time included is right on the basis of increment synchronization
Incremental data carries out logic judgment, filters out the data that will not cause data backflow, and incremental data is generated according only to the selection result.
Data backflow caused by solving the problems, such as data back conduction and circulation conduction, fundamentally reduces resource needed for data storage,
Improving data transmission efficiency, reduce the occupancy of network bandwidth resources.
Fig. 5 is the structural representation for the data syn-chronization control device that the embodiment of the present disclosure provides, as shown in figure 5, the number
Include a processor 501 and a memory 502 associated with processor 501 according to Synchronizing Control Devices 50, in memory 502
It is stored with one group of instruction, wherein processor 501 performs the instruction that is stored in memory 502 to perform following operation：Configuration
Data flow in system between back end, generate data flow configuration information；Read the data flow configuration information with
And first back end and the data in the second back end origin marking, according to the data flow configuration information and described
The origin marking generation incremental data control information of data；Incremental data is generated according to the incremental data control information, to institute
The second back end is stated to send the incremental data and update the origin marking of incremental data described in second back end.
Professional should further appreciate that, each example described with reference to the embodiments described herein
Unit and algorithm steps, it can be realized with electronic hardware, computer software or the combination of the two, it is hard in order to clearly demonstrate
The interchangeability of part and software, the composition and step of each example are generally described according to function in the above description.
These functions are performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.
Professional and technical personnel can realize described function using distinct methods to each specific application, but this realization
It is not considered that exceed the scope of the present disclosure.
The method that is described with reference to the embodiments described herein can use hardware, computing device the step of algorithm
Software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only storage
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described embodiment, the purpose, technical scheme and beneficial effect of the disclosure are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the disclosure, be not used to limit the disclosure
Protection domain, it is all the disclosure spirit and principle within, any modification, equivalent substitution and improvements done etc., all should include
Within the protection domain of the disclosure.
Claims (13)
1. a kind of data syn-chronization control device, including：
Data flow configuration module, for the data flow between back end in configuration system, generation data flow matches somebody with somebody confidence
Breath；
Incremental data control module, for reading the data flow configuration information and the first back end and the second data section
The origin marking of data in point, incremental data is generated according to the data flow configuration information and the origin marking of the data
Control information, and the incremental data control information is sent to first back end,
It is additionally operable to update the origin marking for the incremental data that first back end is sent to second back end.
2. device according to claim 1, wherein, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark,
Wherein, the data flow validity is identified for representing between the source data node and the purpose back end
Whether data flow is effective.
3. device according to claim 2, wherein, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
4. device according to claim 3, wherein, the incremental data control module includes：
Data flow judging unit, for the data in the data flow configuration information and second back end
Origin marking, judges whether first back end needs to send data to second back end；
First data screening unit, the data life corresponding to the data in the second back end of first condition is met for acquisition
Into the information of node,
Wherein, the first condition is that the data generation time is more than or equal to the first data section in origin marking in the second back end
The initial time of the last data syn-chronization of point, and data renewal time be more than or equal to second back end this data syn-chronization
Initial time；
Second data screening unit, the information searching for generating node according to the data meet the first data of second condition
Data in node, the incremental data control information is generated according to the data found,
Wherein, it is not the corresponding data that the second condition, which is that data generate node in origin marking in the first back end,
Node or second back end are generated, and data generation time or data renewal time are more than or equal to the first back end most
The initial time of a nearly data syn-chronization；
Control information transmitting element, for sending the incremental data control information to first back end；
Origin marking updating block, the incremental data sent for updating first back end to second back end
Data source node be the first back end, update the incremental data data renewal time be the second back end receive
The time to incremental data storage is completed to the time of the incremental data or the second back end.
5. a kind of data synchronous system, including：
Data syn-chronization control device described in Claims 1-4 any claim；
First back end, for generating incremental data according to the incremental data control information, to second back end
Send the incremental data；
Second back end, the incremental data sent for storing first back end.
6. a kind of method of data synchronization, including：
Data flow in configuration system between back end, generate data flow configuration information；
The data flow configuration information and the first back end and the origin marking of the data in the second back end are read,
According to the data flow configuration information and the origin marking of data generation incremental data control information；
Incremental data is generated according to the incremental data control information, the incremental data is sent simultaneously to second back end
Update the origin marking of incremental data described in second back end.
7. according to the method for claim 6, wherein, the data flow configuration information includes：
Source data node, purpose back end and data flow validity mark,
Wherein, the data flow validity is identified for representing between the source data node and the purpose back end
Whether data flow is effective.
8. according to the method for claim 7, wherein, the origin marking includes：
Data generate node, produce the back end of the data in expression system earliest；
Data generate the time, produce the start time of the data in expression system earliest；
Data source node, represent to send the data to the source data node of notebook data node；
Data renewal time, represent that the data were completely sent to the time point of notebook data node.
9. according to the method for claim 8, wherein, it is described according to the data flow configuration information and the data come
Source marking generation incremental data control information includes：
The origin marking of data in the data flow configuration information and second back end, judges described first
Whether back end needs to send data to second back end；
In the case where first back end needs to send data to second back end, according to first data
The origin marking of data in node and the origin marking of the data in second back end generate the incremental data control
Information processed.
10. the method according to claim 11, wherein, it is described to be counted according to the data flow configuration information with described second
According to the origin marking of the data in node, judge whether first back end needs to send number to second back end
According to including：
Judge using first back end as source data node, the data using second back end as purpose back end
Whether flow direction is effective；
Using first back end as source data node, the data flow using second back end as purpose back end
To in the case of effective, if in the second back end data source node for all data of the first back end data more
The new time is respectively less than the initial time of second back end this data syn-chronization, then the first back end is needed to the second data section
Point sends data.
11. according to the method for claim 9, wherein, the source of the data in first back end is marked
The origin marking of data in note and second back end, which generates the incremental data control information, to be included：
Acquisition meets the information of the data generation node corresponding to the data in the second back end of first condition,
Wherein, the first condition is that the data generation time is more than or equal to the first data section in origin marking in the second back end
The initial time of the last data syn-chronization of point, and data renewal time be more than or equal to second back end this data syn-chronization
Initial time；
Meet the data in the first back end of second condition according to the information searching of data generation node, according to lookup
The data arrived generate the incremental data control information,
Wherein, it is not the corresponding data that the second condition, which is that data generate node in origin marking in the first back end,
Node or second back end are generated, and data generation time or data renewal time are more than or equal to the first back end most
The initial time of a nearly data syn-chronization.
12. according to the method for claim 8, wherein, data source mark includes in the second tables of data of the renewal：
The data source node for updating the incremental data that first back end is sent to second back end is first
Back end, the data renewal time for updating the incremental data receive the time of the incremental data for the second back end
Or second back end complete to the incremental data storage time.
13. a kind of data syn-chronization control device, including at least one processor, the data storage with least one relational processor
One group of instruction in device, and data storage, wherein the finger at least one computing device data storage
Make to perform following operation：Data flow in configuration system between back end, generate data flow configuration information；Read institute
Data flow configuration information and the first back end and the origin marking of the data in the second back end are stated, according to the number
Incremental data control information is generated according to the origin marking for flowing to configuration information and the data；Controlled and believed according to the incremental data
Breath generation incremental data, sends the incremental data to second back end and updates described in second back end
The origin marking of incremental data.
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