CN102279857B - Method and system for realizing data reproduction - Google Patents
Method and system for realizing data reproduction Download PDFInfo
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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 database management technology field, refers to a kind of method and system realizing data Replica especially.
Background technology
For keeping the high availability of data, general database has certain data redundancy mechanism, such as: shown in Figure 1, adopt in the main reproduction technology of database of mysql, at least comprise three station servers, i.e. server A, server B and server C, also can be called three data storage devices.Wherein, be main replication relation between server A and server B, server A and server B two servers, and be leader follower replication relation between server C.Main replication relation refers between server A and server B it is mutually redundant relation, the data illustrated in figure are inserted more new terminal and can be comprised multiple, each data insert more new terminal can send renewal rewards theory instruction to server A and server B, that is: server A receives after data insert the renewal rewards theory instruction of more new terminal, as insertion, amendment, deletion etc., this renewal rewards theory instruction is kept in the execution journal of self, and then by this Log Sender to server B, server B is execution journal again, also namely completes renewal rewards theory.Meanwhile, if after server B receives renewal rewards theory instruction, after executing renewal rewards theory equally in the manner described above, equally can by the Log Sender of execution to server A.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 renewal rewards theory instruction, if the renewal rewards theory instruction that both receive has conflict, such as server A receives the instruction of the operation of deleting certain record, and server B receives the operational order of this record of amendment, when in server A implementation, when the daily record performed not yet sends to server B, server B receives the operational order of this record of amendment, perform modify instruction, when sending to server A the daily record performed, server A has deleted this record, retouching operation cannot be performed, follow-up operation also just all cannot be carried out smoothly.Therefore, system easily produces 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 realizing data Replica, in order to solve in prior art because main reproduction technology brings the problem of system instability.
A kind of system realizing data Replica that the embodiment of the present application provides comprises:
First data storage device, inserts the first renewal rewards theory instruction of more new terminal transmission, wherein containing the information needing the record upgraded, and according to described first renewal rewards theory instruction more new record for receiving data;
Daily record subsystem, inserts the second renewal rewards theory instruction of more new terminal transmission, comprising the information needing the record upgraded for receiving described data; The information of the record upgraded as required, selected journaling agent server upgrades; The corresponding relation that the information of the record upgraded as required and the second data storage device identify, obtain described the second data storage device mark needing the information of the record upgraded corresponding, Data Update instruction is sent, wherein containing the described information needing the record upgraded to described second data storage device;
Second data storage device, for according to described Data Update instruction, carries out Data Update.
A kind of method realizing data Replica that the embodiment of the present application provides, comprising:
Data are inserted more new terminal and are sent the first renewal rewards theory instruction to the first data storage device, wherein containing the information needing the record upgraded, and send the second renewal rewards theory instruction to daily record subsystem, comprising the information needing the record upgraded;
First data storage device according to described first renewal rewards theory instruction more new record, and,
The information of the record that daily record subsystem upgrades as required, selected journaling agent server upgrades; The corresponding relation that the information of the record upgraded as required and the second data storage device identify, obtain described the second data storage device mark needing the information of the record upgraded corresponding, Data Update instruction is sent, wherein containing the described information needing the record upgraded to described second data storage device;
Second data storage device, according to described Data Update instruction, carries out Data Update.
A daily record subsystem is added in the embodiment of the present application, when data insert more new terminal when sending the first renewal rewards theory instruction to the first data storage device, also the second renewal rewards theory instruction is sent to daily record subsystem, daily record subsystem carries out renewal rewards theory according to the second renewal rewards theory instruction on selected journaling agent server, described selected journaling agent server confirms the second corresponding data storage device simultaneously, corresponding Data Update instruction is sent again to the second data storage device, solve in prior art owing to adopting mutual main reproduction technology to bring the problem of system instability between the first data storage device and the second data storage device, owing to the data of the renewal of the first data storage device being backuped to the second data storage device by daily record subsystem, in the process of implementation, first data storage device and the second data storage device are without interdepending, therefore while raising system stability, the performance of equipment can also be improved.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the data Replica adopting main reproduction technology in prior art;
Fig. 2 is the system architecture schematic diagram of the data Replica of the embodiment of the present application;
Fig. 3 is the schematic flow sheet of the method for the data Replica of the embodiment of the present application;
Fig. 4 is the information schematic diagram of the record that the needs of the embodiment of the present application upgrade.
Embodiment
In the embodiment that the application provides, in order to solve the mutually redundant main reproduction technology of employing two data storage device between the system instability problem that may cause due to operating collision, add a daily record subsystem, when data insert more new terminal after sending the first renewal rewards theory instruction to the first data storage device, also the second renewal rewards theory instruction is sent to daily record subsystem, daily record subsystem is according to the second renewal rewards theory instruction, and in conjunction with the loading condition of all journaling agent servers, a journaling agent server is selected to carry out renewal rewards theory, simultaneously according to the information of the record of the needs renewal comprised in the second renewal rewards theory instruction, as Information ID, obtain the mark of the second data storage device of the good correspondence of configured in advance, corresponding Data Update instruction is sent again to the second data storage device, thus complete the data of the first data storage device are backuped in the second data storage device.
Shown in Figure 2, the system of the embodiment of the present application comprises: data insert more new terminal 21, first data storage device 22 and the second data storage device 23, and daily record subsystem 24.Daily record subsystem 24 comprises control module 241 and multiple journaling agent server, as the first journaling agent server 242, second daily record proxy server 243 and the 3rd journaling agent server 244.In actual application,
First data storage device 22, be one and store the external standard interface server of server, represent insertion, the operation such as renewal and deletion that final storage server accepts data, generally be arranged on a station server with final storage mechanism (as mysql), its very first time receives the first renewal rewards theory instruction that data insert more new terminal transmission, wherein containing the information needing the record upgraded, and according to described first renewal rewards theory instruction more new record;
Daily record subsystem 24, inserts the second renewal rewards theory instruction of more new terminal 21 transmission, comprising the information needing the record upgraded for receiving described data; According to the loading condition of journaling agent servers all in daily record subsystem, a selected suitable journaling agent server, second renewal rewards theory command synchronization of the information comprising the record that needs upgrade is submitted to this selected journaling agent server, the information of the record that the needs received upgrade with the form of renewal rewards theory daily record by selected journaling agent server is kept in the replication log of journaling agent server, carries out asynchronous replication operation for the later stage; The duplicating process of journaling agent server takes out renewal rewards theory daily record, the information of the record upgraded as required, as Information ID, obtain the mark of the second data storage device of the good correspondence of configured in advance, Data Update instruction is sent, wherein containing the described information needing the record upgraded to described second data storage device;
Second data storage device 23, be one and store the external standard interface server of server, represent the insertion that final storage server accepts data, the operations such as renewal and deletion, generally be arranged on a station server with final storage mechanism (as mysql), for according to described Data Update instruction, carry out Data Update, relative to the first data storage device, because the Data Update operation that the second data storage device accepts is what to be completed by the replication log asynchronous operation of centre, so can not be so timely, but finally can be consistent with the data on first data storage device of same group.
Described daily record subsystem 24 comprises: control module 241 and at least one journaling agent server, as the first journaling agent server 242, second daily record proxy server 243, the 3rd journaling agent server 244, wherein,
Described control module 241, inserts the second renewal rewards theory instruction of more new terminal transmission, comprising the information needing the record upgraded for receiving described data; According to the loading condition of journaling agent servers all in daily record subsystem, a selected suitable journaling agent server, sends the second renewal rewards theory instruction to selected journaling agent server, wherein containing the described information needing the record upgraded;
Each journaling agent server, after receiving described second renewal rewards theory instruction, utilizes the described information of the record upgraded that needs to carry out renewal rewards theory; And, according to the information of the record that the needs comprised in the second renewal rewards theory instruction upgrade, as Information ID, obtain the mark of the second data storage device of the good correspondence of configured in advance, send corresponding Data Update instruction to the second data storage device again, thus complete the data of the first data storage device are backuped in the second data storage device.
Data are inserted more new terminal 21 and are sent the first renewal rewards theory instruction to the first data storage device 22, comprising information such as the records needing to upgrade, after the first data storage device 22 receives this renewal rewards theory instruction, upgrade corresponding record.Further, data are inserted more new terminal 21 and are sent the second renewal rewards theory instruction to daily record subsystem 24, comprising the record etc. needing to upgrade.
Daily record subsystem 24 according to this renewal rewards theory instruction, more new record on selected journaling agent server.
Be specially: control module 241 receives after data insert the second renewal rewards theory instruction that more new terminal 21 sends, comprising the information needing the record upgraded; According to the loading condition of all journaling agent servers, a selected journaling agent server sends described second renewal rewards theory instruction, wherein containing the described information needing the record upgraded;
Each journaling agent server, after receiving described renewal rewards theory instruction, utilizes the described information of the record upgraded that needs to carry out renewal rewards theory; According to the information of the record that the needs comprised in the second renewal rewards theory instruction upgrade, as Information ID, obtain the mark of the second data storage device of the good correspondence of configured in advance, send Data Update instruction to described second data storage device 23, wherein containing the described information needing the record upgraded.
It should be noted that, how many first data storage devices are had just to have how many second data storage devices, first data storage device and second data storage device form the storage sets that a group logically stores identical content jointly, in total system, depending on the scale of storage, have one to multiple stage data storage device group.
Shown in Figure 3, a kind of method realizing data Replica of the embodiment of the present application specifically comprises the following steps:
Step 301: data are inserted more new terminal and sent the first renewal rewards theory instruction to the first data storage device, wherein containing the information needing the record upgraded.
Step 302: data are inserted more new terminal and sent the second renewal rewards theory instruction to daily record subsystem, comprising the information needing the record upgraded.
Step 303: the first data storage device receiving the first renewal rewards theory instruction, performs renewal rewards theory according to described first renewal rewards theory instruction.
First data storage device preserves the information needing the record upgraded.Further, with the form of renewal rewards theory daily record, the described information of the record upgraded that needs can be preserved.
Such as: the form of renewal rewards theory daily record can be " timestamp+Information ID+KVS ", wherein, the INTEGER representation (precision is Millisecond) of the present system time that timestamp obtains when being and receiving the first renewal rewards theory instruction, Information ID is the unique identification of appointed information, uniquely determine when information generates, no longer change, KVS refers to the list of the new value of the concrete field name that information updating relates to and field, being the form that a kind of information represents, is exactly right list combination (Key-Value liSt) of key value.
Step 304: daily record subsystem selects a suitable journaling agent server according to the loading condition of current operating journaling agent server, submits to this journaling agent server by needing the recorded information upgraded and processes.
Corresponding journaling agent server, after receiving the recorded information needing to upgrade, is kept at the form of renewal rewards theory daily record in the replication log of journaling agent server and carries out asynchronous replication operation for the later stage.
Such as: the form of renewal rewards theory daily record is " timestamp+Information ID+IP+KVS ", renewal rewards theory order format can be " timestamp+Information ID+KVS ", wherein, the INTEGER representation (precision is Millisecond) of the present system time that timestamp obtains when being and receiving the second renewal rewards theory instruction, Information ID is the unique identification of appointed information, uniquely determine when information generates, no longer change, KVS refers to the list of the new value of the concrete field name that information updating relates to and field, IP address is the mark of the second data storage device of the correspondence that the configured in advance that obtained by Information ID is good, for indicating that this duplicate requests finally needs the second data storage device be sent to.Second data storage device mark can be the address of the IP of a standard, is directly used in the position at mark second data storage device place simultaneously.
Step 305: the duplicating process of journaling agent server takes out renewal rewards theory daily record, obtain the target second data storage device mark needing to upgrade, Data Update instruction is sent to described second data storage device, wherein containing the described information needing the record upgraded, wherein, the second data storage device mark that the described Information ID needing to upgrade is corresponding is according to pre-determined when generating replication log.
Here, each journaling agent server internal has parallel, asynchronous daily record execution mechanism, will the Data Update instruction copied be needed to be submitted in corresponding second data storage device fast.
Step 306: the second data storage device, according to described Data Update instruction, carries out Data Update.
Step 301 and step 302 can executed in parallel, also can successively perform.
Here, renewal rewards theory comprises: the information of the record deleted, revise or add.And described first renewal rewards theory instruction and described second renewal rewards theory instruction are only insert and do not cover the operational order of former record.This also just says, each information of the record upgraded that needs can be represented by an insertion record, and namely each information of the record upgraded that needs comprises: the information of the field of needs insertion, and timestamp.Here, timestamp can be: temporal information, also can be the version information for identifying sequencing.
If daily record subsystem needs the data sending to the second data storage device many, namely Data Update instruction may have multiple, and therefore these Data Update instructions can be serials, also can be executed in parallel.In parallel implementation, the corresponding timestamp of each record needing to upgrade in Data Update instruction.
As shown in Figure 4, need can comprise one or more field in the record upgraded, different timestamps can be converted for each field, no matter be only have a field, or more than one field, in systems in which, instruction only inserts necessary data, namely superposition of data.When reading data, acquiescence each field value that only the reading time is nearest, each field value that namely version is up-to-date, logically, the content of reading, as the state-of-the-art record that the dotted arrow line in Fig. 4 strings together.
In the embodiment of the present application, data insert more new terminal when sending the first renewal rewards theory instruction to the first data storage device, also the second renewal rewards theory instruction is sent to daily record subsystem, daily record subsystem carries out renewal rewards theory according to the second renewal rewards theory instruction on selected journaling agent server, simultaneously according to the information of the record of the needs renewal comprised in the second renewal rewards theory instruction, as Information ID, obtain the mark of the second data storage device of the good correspondence of configured in advance, then send corresponding Data Update instruction to the second data storage device.Owing to the data of the renewal of the first data storage device being backuped to the second data storage device by daily record subsystem, in the process of implementation, do not affect the work of the first data storage device, therefore while raising system stability, the performance of the first data storage device can also be improved.
Because daily record subsystem is independent, first data storage device and the second data storage device are without interdepending, daily record subsystem can executed in parallel subsequent synchronizing operation, to improve the stability of system, because stab standard if having time, the front and back dependence copied of data, also by message, when partial data copies failure, also can not produce large impact to the overall progress copied.And the embodiment of the present application also solving as keeping data high availability, adopting and the serious problem of performance loss that reproduction technology brings such as copying based on database is main.
Obviously, those skilled in the art can carry out various change and modification to the application and not depart from the spirit and scope of the application.Like this, if these amendments of the application and modification belong within the scope of the application's claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.
Claims (11)
1. realize a system for data Replica, it is characterized in that, be applied in main dubbing system, this system comprises:
First data storage device, inserts the first renewal rewards theory instruction of more new terminal transmission, wherein containing the information needing the record upgraded, and according to described first renewal rewards theory instruction more new record for receiving data;
Daily record subsystem, inserts the second renewal rewards theory instruction of more new terminal transmission, comprising the information needing the record upgraded for receiving described data; The information of the record upgraded as required, selected journaling agent server upgrades; The corresponding relation that the information of the record upgraded as required and the second data storage device identify, obtain described the second data storage device mark needing the information of the record upgraded corresponding, Data Update instruction is sent to described second data storage device, wherein containing the described information needing the record upgraded, wherein, described first renewal rewards theory instruction and the second renewal rewards theory instruction are inserted more new terminal by data and are sent to the first data storage device and daily record subsystem respectively;
Second data storage device, for according to described Data Update instruction, carries out Data Update.
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, inserts the second renewal rewards theory instruction of more new terminal transmission, comprising the information needing the record upgraded for receiving described data; According to the selected journaling agent server of the loading condition of journaling agent server, send the second renewal rewards theory instruction to selected journaling agent server, wherein containing the described information needing the record upgraded;
Each journaling agent server, after receiving described second renewal rewards theory instruction, utilizes the described information of the record upgraded that needs to carry out renewal rewards theory; The corresponding relation that the information of the record upgraded as required and the second data storage device identify, obtain described the second data storage device mark needing the information of the record upgraded corresponding, Data Update instruction is sent, wherein containing the described information needing the record upgraded to described second data storage device.
3. system according to claim 1, is characterized in that, the described information of the record upgraded that needs comprises: the information of the record deleted, revise or add.
4. system according to claim 1, is characterized in that, the described information of record upgraded that needs comprises: the information of the field of needs insertion, Information ID and timestamp.
5. system according to claim 4, is characterized in that, described first renewal rewards theory instruction and described second renewal rewards theory instruction are only insert 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, for identifying the version information of sequencing.
7. realize a method for data Replica, it is characterized in that, be applied in main dubbing system, the method comprises the following steps:
Data are inserted more new terminal and are sent the first renewal rewards theory instruction to the first data storage device, wherein containing the information needing the record upgraded, and send the second renewal rewards theory instruction to daily record subsystem, comprising the information needing the record upgraded;
First data storage device according to described first renewal rewards theory instruction more new record, and,
The information of the record that daily record subsystem upgrades as required, selected journaling agent server upgrades; The corresponding relation that the information of the record upgraded as required and the second data storage device identify, obtain described the second data storage device mark needing the information of the record upgraded corresponding, Data Update instruction is sent, wherein containing the described information needing the record upgraded to described second data storage device;
Second data storage device, according to described Data Update instruction, carries out Data Update.
8. method according to claim 7, is characterized in that, the described information of the record upgraded that needs comprises: the information of the record deleted, revise or add.
9. method according to claim 7, is characterized in that, the described information of record upgraded that needs comprises: the information of the field of needs insertion, Information ID and timestamp.
10. method according to claim 9, is characterized in that, described first renewal rewards theory instruction and described second renewal rewards theory instruction are only insert and do not cover the operational order of former record.
11. methods according to claim 9, is characterized in that, described timestamp is: temporal information or, for identifying 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 CN102279857A (en) | 2011-12-14 |
| CN102279857B true 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) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104281537B (en) * | 2013-07-05 | 2017-09-08 | 阿里巴巴集团控股有限公司 | A kind of internal memory clone method and device |
| CN105183459B (en) * | 2015-08-14 | 2018-08-24 | 无锡天脉聚源传媒科技有限公司 | A kind of data modification method and device |
| CN106484321A (en) * | 2016-09-08 | 2017-03-08 | 华为数字技术（成都）有限公司 | A kind of date storage method and data center |
| 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 |
| CN106598538B (en) * | 2016-11-29 | 2020-02-11 | 泰山信息科技有限公司 | Instruction set updating method and system |
| 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 |
| CN110825758B (en) * | 2019-10-31 | 2022-11-15 | 中国银联股份有限公司 | Transaction processing method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598787A (en) * | 2003-09-16 | 2005-03-23 | 西门子公司 | A copy machine for generating or refreshing identity memory in computer |
| CN1690973A (en) * | 2004-04-19 | 2005-11-02 | 株式会社日立制作所 | Remote copy method and remote copy system |
| CN101206553A (en) * | 2006-12-20 | 2008-06-25 | 国际商业机器公司 | Optimized data migration method and system with a support processor |
-
2010
- 2010-06-11 CN CN201010205082.5A patent/CN102279857B/en active Active
-
2012
- 2012-04-27 HK HK12104168.4A patent/HK1163852A1/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598787A (en) * | 2003-09-16 | 2005-03-23 | 西门子公司 | A copy machine for generating or refreshing identity memory in computer |
| CN1690973A (en) * | 2004-04-19 | 2005-11-02 | 株式会社日立制作所 | Remote copy method and remote copy system |
| CN101206553A (en) * | 2006-12-20 | 2008-06-25 | 国际商业机器公司 | Optimized data migration method and system with a support processor |
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| CN102279857A (en) | 2011-12-14 |
| HK1163852A1 (en) | 2012-09-14 |
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