CN102279857A - Method and system for realizing data reproduction - Google Patents
Method and system for realizing data reproduction Download PDFInfo
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- CN102279857A CN102279857A CN2010102050825A CN201010205082A CN102279857A CN 102279857 A CN102279857 A CN 102279857A CN 2010102050825 A CN2010102050825 A CN 2010102050825A CN 201010205082 A CN201010205082 A CN 201010205082A CN 102279857 A CN102279857 A CN 102279857A
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Abstract
The invention discloses a system and method for realizing data reproduction, which are used for solving the problem of system instability caused by a main reproduction technology in the prior art. The system comprises first data storing equipment, a log subsystem and second data storing equipment, wherein the first data storing equipment is used for receiving a first update operation command which comprises recorded information needing to be updated and is transmitted by a data insertion update terminal, and updating a record according to the first update operation command; the log subsystem is used for receiving a second update operation command which comprises recorded information needing to be updated and is transmitted by the data insertion update terminal, updating a selected log proxy server, acquiring a second corresponding data storing equipment identifier according to the corresponding relation of the recorded information needing to be updated and a second data storing equipment identifier, and transmitting a data update command which comprises the recorded information needing to be updated to the second storing equipment; and the second storing equipment is used for updating data according to the data update command.
Description
Technical field
The application relates to the database management technology field, is meant a kind of method and system that realize that data are duplicated especially.
Background technology
For keeping the high availability of data, general database all has certain data redundancy mechanism, such as: referring to shown in Figure 1, adopt in the database master master reproduction technology of mysql, at least comprise three station servers, be server A, server B and server C, also can be called three data memory devices.Wherein, between server A and the server B main replication relation, two servers of server A and server B, and be the leader follower replication relation between the server C.Main replication relation is meant between server A and the server B it is mutually redundant relation, the data that illustrate among the figure are inserted more, and new terminal can comprise a plurality of, each data is inserted more, and new terminal can send the renewal operational order to server A and server B, that is: after server A receives that data are inserted the renewal operational order of new terminal more, as insertion, modification, deletion etc., this renewal operational order is kept in the execution journal of self, and then this daily record sent to server B, server B is execution journal again, also promptly finishes and upgrades operation.Simultaneously, if server B receive upgrade operational order after, execute equally in the manner described above upgrade operation after, the daily record of carrying out can be sent to server A equally.Server C be server A and server B from server, need the data of schedule backup server A and server B.
Because server A and server B can receive the renewal operational order, if the renewal operational order that both receive has conflict, receive the instruction of the operation of certain record of deletion such as server A, and server B receives the operational order of revising this record, in the server A implementation, when the daily record of carrying out does not send to server B as yet, server B is received the operational order of revising this record, carried out modify instruction, when server A sends the daily record of carrying out, server A has been deleted this record, can't carry out retouching operation, and follow-up operation also just all can't be carried out smoothly.Therefore, system is easy to generate labile factor, and daily record is reformed and made mistakes, and can stop follow-up all replicate runs.
Summary of the invention
The application provides a kind of system and method for realizing that data are duplicated, in order to solve in the prior art because main reproduction technology is brought system's problem of unstable.
A kind of system that realizes that data are duplicated that the embodiment of the present application provides comprises:
First data storage device is used to receive the first renewal operational order that data are inserted more new terminal transmission, wherein contains the information of the record of needs renewal, and upgrades more new record of operational order according to described first;
The daily record subsystem is used to receive that described data insert that new terminal more sends second upgrades operational order, the information of the record that upgrades comprising needs; The information of the record of Geng Xining is upgraded on selected journaling agent server as required; As required the information of the record of Geng Xining and second data storage device sign corresponding relation, obtain second data storage device sign of the information correspondence of the described record that need upgrade, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal;
Second data storage device is used for carrying out Data Update according to described Data Update instruction.
A kind of method that realizes that data are duplicated that the embodiment of the present application provides comprises:
Data are inserted more new terminal and are sent first to first data storage device and upgrade operational order, wherein contain the information of the record that needs upgrade, and send the second renewal operational order to the daily record subsystem, the information of the record that need upgrade comprising needs;
First data storage device upgrades more new record of operational order according to described first, and,
The information of the record that the daily record subsystem upgrades is as required upgraded on selected journaling agent server; As required the information of the record of Geng Xining and second data storage device sign corresponding relation, obtain second data storage device sign of the information correspondence of the described record that need upgrade, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal;
Second data storage device instructs according to described Data Update, carries out Data Update.
Increased a daily record subsystem in the embodiment of the present application, insert more new terminal when data and sending first to first data storage device when upgrading operational order, also send second and upgrade operational order to the daily record subsystem, the daily record subsystem upgrades operational order according to second and upgrade operation on selected journaling agent server, simultaneously described selected journaling agent server is confirmed the second corresponding data storage device, send corresponding Data Update instruction to second data storage device again, solved in the prior art owing to adopt mutual main reproduction technology to bring system's problem of unstable between first data storage device and second data storage device, owing to the data updated of first data storage device is backuped to second data storage device by the daily record subsystem, in the process of implementation, first data storage device and second data storage device do not have and interdepend, therefore when improving system stability, can also improve the performance of equipment.
Description of drawings
The system architecture synoptic diagram that Fig. 1 duplicates for the data of available technology adopting master master reproduction technology;
The system architecture synoptic diagram that Fig. 2 duplicates for the data of the embodiment of the present application;
The schematic flow sheet of the method that Fig. 3 duplicates for the data of the embodiment of the present application;
Fig. 4 is the information synoptic diagram of the record that upgrades of the needs of the embodiment of the present application.
Embodiment
In the embodiment that the application provides, in order to solve between the data storage device that adopts two main reproduction technologies of mutually redundant master because system's instability problem that operating collision may cause, increased a daily record subsystem, when data insert more new terminal sending to first data storage device first upgrade operational order after, also send second and upgrade operational order to the daily record subsystem, the daily record subsystem upgrades operational order according to second, and in conjunction with the loading condition of all journaling agent servers, select a journaling agent server to upgrade operation, while is according to the information of the record of the needs renewal that comprises in the second renewal operational order, as Information ID, obtain the sign of second data storage device of the good correspondence of configured in advance, send corresponding Data Update instruction to second data storage device again, thereby the data of finishing first data storage device backup in second data storage device.
Referring to shown in Figure 2, the system of the embodiment of the present application comprises: data are inserted more new terminal 21, first data storage device 22 and second data storage device 23, and daily record subsystem 24.Daily record subsystem 24 comprises control module 241 and a plurality of journaling agent server, as the first journaling agent server 242, the second journaling agent server 243 and the 3rd journaling agent server 244.In actual application,
First data storage device 22, it is an external standard interface server of storage server, represent final storage server to accept the operations such as insertion, renewal and deletion of data, generally be to be installed on the station server with final storage mechanism (as mysql), its very first time receives the first renewal operational order that data are inserted more new terminal transmission, the information that wherein contains the record that needs upgrade, and upgrade more new record of operational order according to described first;
Daily record subsystem 24 is used to receive that described data insert that new terminal 21 more sends second upgrades operational order, the information of the record that upgrades comprising needs; Loading condition according to all journaling agent servers in the daily record subsystem, selected suitable journaling agent server, second the upgrading operational order and be submitted to this selected journaling agent server synchronously of information that will comprise the record that needs upgrade, the information of the record that the needs that selected journaling agent server will receive with the form that upgrades Operation Log upgrade is kept in the replication log of journaling agent server, carries out asynchronous replication for the later stage and manipulates; The duplicating process of journaling agent server takes out and upgrades Operation Log, the information of the record of Geng Xining as required, as Information ID, obtain the sign of second data storage device of the good correspondence of configured in advance, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal;
Second data storage device 23, it is an external standard interface server of storage server, represent final storage server to accept the insertion of data, operations such as renewal and deletion, generally be to be installed on the station server with final storage mechanism (as mysql), be used for according to described Data Update instruction, carry out Data Update, with respect to first data storage device, because the Data Update of accepting on second data storage device operation is what to finish by the replication log asynchronous operation of centre, so can be so not timely, but finally can be consistent with the data on same group first data storage device.
Described daily record subsystem 24 comprises: control module 241 and at least one journaling agent server, and as the first journaling agent server 242, the second journaling agent server 243, the 3rd journaling agent server 244, wherein,
Described control module 241 is used to receive that described data insert that new terminal more sends second upgrades operational order, the information of the record that upgrades comprising needs; According to the loading condition of all journaling agent servers in the daily record subsystem, selected suitable journaling agent server sends second to selected journaling agent server and upgrades operational order, wherein contains the information of the record of described needs renewal;
Each journaling agent server, be used to receive described second upgrade operational order after, utilize the described information of the record that upgrades that needs to upgrade operation; And, according to second information of upgrading the record that the needs that comprise in the operational order upgrade, as Information ID, obtain the sign of second data storage device of the good correspondence of configured in advance, send corresponding Data Update instruction to second data storage device again, thereby the data of finishing first data storage device backup in second data storage device.
Data are inserted more new terminal 21 and are sent first to first data storage device 22 and upgrade operational order, and comprising the information such as record that needs upgrade, first data storage device 22 upgrades corresponding record after receiving this renewal operational order.And data are inserted more new terminal 21 and are sent second to daily record subsystem 24 and upgrade operational order, the record that upgrades comprising needs etc.
Daily record subsystem 24 upgrades operational order according to this, new record more on selected journaling agent server.
Be specially: control module 241 receive that data insert that new terminal more 21 sends second upgrade operational order after, the information of the record that upgrades comprising needs; According to the loading condition of all journaling agent servers, a selected journaling agent server sends described second and upgrades operational order, wherein contains the information of the record of described needs renewal;
Each journaling agent server, be used to receive described renewal operational order after, utilize the information of the described record that need to upgrade to upgrade operation; According to second information of upgrading the record that the needs that comprise in the operational order upgrade, as Information ID, obtain the sign of second data storage device of the good correspondence of configured in advance, send the Data Update instruction, wherein contain the information of the record of described needs renewal to described second data storage device 23.
Need to prove, there is how many platforms first data storage device that how many platforms second data storage device is just arranged, one first data storage device and one group of storage sets of logically storing identical content of one the second common composition of data storage device, in total system, look the scale of storage, have one to many data storage device groups.
Referring to shown in Figure 3, a kind of method that realizes that data are duplicated of the embodiment of the present application specifically may further comprise the steps:
Step 301: data are inserted more new terminal and are sent first to first data storage device and upgrade operational order, wherein contain the information of the record of needs renewal.
Step 302: data are inserted more new terminal and are sent second to the daily record subsystem and upgrade operational order, the information of the record that upgrades comprising needs.
Step 303: receive that first upgrades first data storage device of operational order, upgrade operational order according to described first and carry out the renewal operation.
First data storage device is preserved the information of the record that needs renewal.And, can the described information of the record of renewal that needs be preserved with the form that upgrades Operation Log.
Such as: the form that upgrades Operation Log can be " timestamp+Information ID+KVS ", wherein, timestamp is an INTEGER representation (precision is a Millisecond) of receiving the first current system time of obtaining when upgrading operational order, Information ID is the unique identification of appointed information, it is unique definite when information generates, no longer change, KVS is meant the tabulation of the new value of concrete field name that information updating relates to and field, being a kind of form of information representation, is exactly the right tabulation combination (Key-Value liSt) of strong value.
Step 304: the daily record subsystem is selected a suitable journaling agent server according to the loading condition of current operating journaling agent server, the recorded information of needs renewal is submitted to this journaling agent server handle.
Corresponding journaling agent server is kept at the form that upgrades Operation Log and carries out asynchronous replication for the later stage in the replication log of journaling agent server and manipulate after receiving the recorded information that needs to upgrade.
Such as: the form that upgrades Operation Log is " timestamp+Information ID+IP+KVS ", upgrade the operational order form and can be " timestamp+Information ID+KVS ", wherein, timestamp is an INTEGER representation (precision is a Millisecond) of receiving the second current system time of obtaining when upgrading operational order, Information ID is the unique identification of appointed information, it is unique definite when information generates, no longer change, KVS is meant the tabulation of the new value of concrete field name that information updating relates to and field, the IP address is used to second data storage device that indicates that this duplicate requests ultimate demand sends to for the sign of second data storage device of the good correspondence of the configured in advance that obtains by Information ID.Second data storage device sign can be the address of the IP of a standard, is directly used in the position at the sign second data storage device place simultaneously.
Step 305: the duplicating process of journaling agent server takes out and upgrades Operation Log, target second data storage device that obtains to need to upgrade identifies, send the Data Update instruction to described second data storage device, the information that wherein contains the record of described needs renewal, wherein, described second data storage device sign that needs updated information ID correspondence is according to pre-determined when generating replication log.
Here, all there is parallel, asynchronous daily record execution mechanism each journaling agent server inside, and the Data Update instruction of fast needs being duplicated is submitted in corresponding second data storage device.
Step 306: second data storage device instructs according to described Data Update, carries out Data Update.
Step 301 and step 302 can executed in parallel, also can successively carry out.
Here, upgrading operation comprises: the information of the record of deletion, modification or interpolation.And described first upgrades operational order and described second upgrades operational order for only inserting and do not cover the operational order of former record.This also just says so, and the information of the record that each need upgrade can be inserted record by one and represent that promptly the information of each record that need upgrade comprises: the information of the field that needs insert, and timestamp.Here, timestamp can for: temporal information also can be the version information that is used to identify sequencing.
If it is many that the daily record subsystem need send to the data of second data storage device, Data Update instruction just may have a plurality of, and therefore these Data Update instructions can be serials, also can be executed in parallel.In the executed in parallel process, all corresponding timestamp of each record that need upgrade in the Data Update instruction.
As shown in Figure 4, one or more fields can be comprised in the record that needs to upgrade, the different timestamp of each field conversion can be, no matter be to have only a field, still more than a field, in system, data necessary, just superposition of data are only inserted in indication.During reading of data, acquiescence each nearest field value of a time for reading, each up-to-date field value of version just, logically, the content that reads, the state-of-the-art record that strings together as the empty arrow line among Fig. 4.
In the embodiment of the present application, data are inserted more new terminal and are being sent first to first data storage device when upgrading operational order, also send second and upgrade operational order to the daily record subsystem, the daily record subsystem upgrades operational order according to second and upgrade operation on selected journaling agent server, while is according to the information of the record of the needs renewal that comprises in the second renewal operational order, as Information ID, obtain the sign of second data storage device of the good correspondence of configured in advance, send corresponding Data Update instruction to second data storage device again.Owing to the data updated of first data storage device is backuped to second data storage device by the daily record subsystem, in the process of implementation, do not influence the work of first data storage device, therefore when improving system stability, can also improve the performance of first data storage device.
Because the daily record subsystem is independent, first data storage device and second data storage device do not have and interdepend, the daily record subsystem can the executed in parallel subsequent synchronisation be operated, to improve the stability of system, because stab standard if having time, the front and back dependence of duplicating of data is duplicated at partial data under the situation of failure also by message, also can not produce big influence to the overall progress that duplicates.And the embodiment of the present application also solves to keeping the data high availability, adopts the serious problem of bringing based on reproduction technologies such as database master master duplicate of performance loss.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not break away from the application to the application.Like this, if these of the application are revised and modification belongs within the scope of the application's claim and equivalent technologies thereof, then the application also is intended to comprise these changes and modification interior.
Claims (11)
1. a system that realizes that data are duplicated is characterized in that, this system comprises:
First data storage device is used to receive the first renewal operational order that data are inserted more new terminal transmission, wherein contains the information of the record of needs renewal, and upgrades more new record of operational order according to described first;
The daily record subsystem is used to receive that described data insert that new terminal more sends second upgrades operational order, the information of the record that upgrades comprising needs; The information of the record of Geng Xining is upgraded on selected journaling agent server as required; As required the information of the record of Geng Xining and second data storage device sign corresponding relation, obtain second data storage device sign of the information correspondence of the described record that need upgrade, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal;
Second data storage device is used for carrying out Data Update according to described Data Update instruction.
2. system according to claim 1 is characterized in that, described daily record subsystem comprises: control module and at least one journaling agent server, wherein,
Described control module is used to receive that described data insert that new terminal more sends second upgrades operational order, the information of the record that upgrades comprising needs; According to the selected journaling agent server of the loading condition of journaling agent server, send second to selected journaling agent server and upgrade operational order, wherein contain the information of the record of described needs renewal;
Each journaling agent server, be used to receive described second upgrade operational order after, utilize the described information of the record that upgrades that needs to upgrade operation; As required the information of the record of Geng Xining and second data storage device sign corresponding relation, obtain second data storage device sign of the information correspondence of the described record that need upgrade, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal.
3. system according to claim 1 is characterized in that, the described information of the record of renewal that needs comprises: the information of the record of deletion, modification or interpolation.
4. system according to claim 1 is characterized in that, the described information of the record of renewal that needs comprises: information, Information ID and the timestamp of the field that needs insert.
5. system according to claim 4 is characterized in that, described first upgrades operational order and described second upgrades operational order for only inserting and do not cover the operational order of former record.
6. system according to claim 4 is characterized in that, described timestamp is: temporal information or, be used to identify the version information of sequencing.
7. a method that realizes that data are duplicated is characterized in that, this method may further comprise the steps:
Data are inserted more new terminal and are sent first to first data storage device and upgrade operational order, wherein contain the information of the record that needs upgrade, and send the second renewal operational order to the daily record subsystem, the information of the record that need upgrade comprising needs;
First data storage device upgrades more new record of operational order according to described first, and,
The information of the record that the daily record subsystem upgrades is as required upgraded on selected journaling agent server; As required the information of the record of Geng Xining and second data storage device sign corresponding relation, obtain second data storage device sign of the information correspondence of the described record that need upgrade, send the Data Update instruction to described second data storage device, wherein contain the information of the record of described needs renewal;
Second data storage device instructs according to described Data Update, carries out Data Update.
8. method according to claim 7 is characterized in that, the described information of the record of renewal that needs comprises: the information of the record of deletion, modification or interpolation.
9. method according to claim 7 is characterized in that, the described information of the record of renewal that needs comprises: information, Information ID and the timestamp of the field that needs insert.
10. method according to claim 9 is characterized in that, described first upgrades operational order and described second upgrades operational order for only inserting and do not cover the operational order of former record.
11. method according to claim 9 is characterized in that, described timestamp is: temporal information or, be used to identify the version information of sequencing.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010205082.5A CN102279857B (en) | 2010-06-11 | 2010-06-11 | Method and system for realizing data reproduction |
| HK12104168.4A HK1163852A1 (en) | 2010-06-11 | 2012-04-27 | A method and system for replicating data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010205082.5A CN102279857B (en) | 2010-06-11 | 2010-06-11 | Method and system for realizing data reproduction |
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| CN102279857A true CN102279857A (en) | 2011-12-14 |
| CN102279857B CN102279857B (en) | 2015-03-04 |
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| CN201010205082.5A Active CN102279857B (en) | 2010-06-11 | 2010-06-11 | Method and system for realizing data reproduction |
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| HK (1) | HK1163852A1 (en) |
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| CN102663017A (en) * | 2012-03-21 | 2012-09-12 | 互动在线（北京）科技有限公司 | Implementation system and implementation method for enhancing availability of MySQL database |
| CN104281537A (en) * | 2013-07-05 | 2015-01-14 | 阿里巴巴集团控股有限公司 | Memory copying method and device |
| CN105183459A (en) * | 2015-08-14 | 2015-12-23 | 无锡天脉聚源传媒科技有限公司 | Data modification method and apparatus |
| CN106598538A (en) * | 2016-11-29 | 2017-04-26 | 努比亚技术有限公司 | Method and system for updating instruction set |
| CN106776803A (en) * | 2016-11-24 | 2017-05-31 | 北京锐安科技有限公司 | The update method and device of a kind of log recording |
| WO2018045758A1 (en) * | 2016-09-08 | 2018-03-15 | 华为技术有限公司 | Data storage method and data centre |
| CN109144418A (en) * | 2018-08-16 | 2019-01-04 | 郑州云海信息技术有限公司 | A kind of method of data synchronization and device |
| WO2021082925A1 (en) * | 2019-10-31 | 2021-05-06 | 中国银联股份有限公司 | Transaction processing method and apparatus |
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| CN102663017A (en) * | 2012-03-21 | 2012-09-12 | 互动在线（北京）科技有限公司 | Implementation system and implementation method for enhancing availability of MySQL database |
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| CN106598538A (en) * | 2016-11-29 | 2017-04-26 | 努比亚技术有限公司 | Method and system for updating instruction set |
| CN106598538B (en) * | 2016-11-29 | 2020-02-11 | 泰山信息科技有限公司 | Instruction set updating method and system |
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Also Published As
| Publication number | Publication date |
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| HK1163852A1 (en) | 2012-09-14 |
| CN102279857B (en) | 2015-03-04 |
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