CN109492050A - The method and device for preventing MySQL dual-active system circulation from replicating - Google Patents
The method and device for preventing MySQL dual-active system circulation from replicating Download PDFInfo
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Abstract
The present invention provides a kind of method and device for preventing MySQL dual-active system circulation from replicating, comprising: the first MySQL node generates the first Binlog after data update；The first Binlog is converted the first JSON data by first arkgate, by the first JSON data storage to the first data center；First adapter reads the first JSON data from the first data center again, and is converted into the first SQL statement；Mark is written in first adapter in the 2nd MySQL node；First adapter executes first SQL statement in the 2nd MySQL node, and then the 2nd MySQL node generates the 2nd Binlog containing mark；2nd arkgate goes out the 2nd Binlog according to the landmark identification, then stops subscribing to the 2nd Binlog, so that data do not continue to copy in the first MySQL node.
Description
Technical field
The present invention relates to field of computer technology, and in particular to a method of prevent MySQL dual-active system circulation from replicating
And device.
Background technique
Currently, dual-active, is a kind of standby (Disaster Recovery) scheme of the computer calamity to economize on resources, realizes mould
Formula is the business for allowing active and standby Liang Ge data center all while undertaking user, at this point, active and standby Liang Ge data center is mutually backups, and
It backs up in realtime.In general, the load of primary data center may be more, for example share the business of 60-70%, standby number
The business that 40%-30% is only shared according to center, ensure that when wherein breaking down on one side, be unlikely to cause business that can not handle
The case where.MySQL (MySQL is the Database Systems in (SuSE) Linux OS, i.e. the toll free database of open source code) dual-active
The backup of system, which mainly passes through, subscribes to Binlog (binlog is binary log file, and the data for recording mysql update),
Binlog is converted into SQL statement, then SQL statement executes on Correspondent Node, although realize in this way the synchronizations of data with
Duplication, but SQL statement (structured query language (Structured Query Language) abbreviation is converted in Binlog
SQL, structured query language are a kind of data base querying and programming language, for access data and inquiry, update and
Administrative relationships Database Systems) after, (Server id is the mark of MySQL Server to the Server id in originally Binlog
Id it) loses, and Server id can not be controlled when executing SQL statement, because Server id is complete in MySQL
Office's parameter, the write-in of all connections corresponding Server id when modification, can be modified, data are replicated in two
Meeting Infinite Cyclic is gone down on node.
Summary of the invention
In view of this, the present invention provides a kind of method and device for preventing MySQL dual-active system circulation from replicating, can be realized
Two node datas synchronize mutual backup, and data backup will not Infinite Cyclic duplication.
To achieve the above object, according to an aspect of the invention, there is provided one kind prevents MySQL dual-active system circulation multiple
The method of system.
The method for preventing MySQL dual-active system circulation from replicating of extraction data of the invention, comprising: include:
First MySQL node generates the first Binlog after data update；
The first Binlog is converted the first JSON data by first arkgate, then stores the first JSON data to the
One data center；
First adapter reads the first JSON data from first data center again, and is converted into the first SQL language
Sentence；
Mark is written in first adapter in the 2nd MySQL node；
First adapter executes first SQL statement in the 2nd MySQL node, then the 2nd MySQL section
Point generates the 2nd Binlog containing mark；
2nd arkgate goes out the 2nd Binlog according to the landmark identification, then stops subscribing to the 2nd Binlog, so that number
According to not continuing to copy in the first MySQL node.
Optionally, before the first Binlog is converted the first JSON data by the first arkgate, further includes: first
Arkgate subscribes to the first Binlog.
Optionally, further includes:
2nd MySQL node generates the 3rd Binlog after data update；
The 3rd Binlog is converted the 2nd JSON data by 2nd arkgate, then stores the 2nd JSON data to the
Two data centers；
2nd adapter reads the 2nd JSON data from second data center again, and is converted into the 2nd SQL language
Sentence；
Mark is written in 2nd adapter in the 2nd MySQL node；
2nd adapter executes second SQL statement in the first MySQL node, then the first MySQL section
Point generates the 4th Binlog containing mark；
First arkgate goes out the 4th Binlog according to the landmark identification, then stops subscribing to the 4th Binlog, so that number
According to not continuing to copy in the 2nd MySQL node.
Optionally, before the 3rd Binlog is converted the 2nd JSON data by the 2nd arkgate, further includes: second
Arkgate subscribes to the 3rd Binlog.
To achieve the above object, according to another aspect of the present invention, providing one kind prevents MySQL dual-active system circulation
The device of duplication, comprising:
First mark generation module, is arranged in the first adapter, for mark to be written in the 2nd MySQL node；
Second recognition processing module is arranged in the 2nd arkgate, for going out second according to the landmark identification
Then Binlog stops subscribing to the 2nd Binlog, so that data do not continue to copy in the first MySQL node.
Optionally, described device further include:
First generation module is arranged in the first MySQL node, is used for after the update of the first MySQL node data,
Generate the first Binlog；
First subscribing module is arranged in the first arkgate, for subscribing to the first Binlog；
First conversion module is arranged in the first arkgate, for converting the first JSON data for the first Binlog,
Then the first JSON data are stored to the first data center；
First read module is arranged in the first adapter, for reading the first JSON number from first data center
According to, and it is converted into the first SQL statement；
Second execution module is arranged in the 2nd MySQL node, is used for the first SQL statement in the 2nd MySQL node
It executes, then generates the 2nd Binlog in the 2nd MySQL node.
Optionally, further includes:
Second mark generation module, is arranged in the 2nd adapter, for mark to be written in the 2nd MySQL node；
First recognition processing module is arranged in the first arkgate, for going out the 4th according to the landmark identification
Then Binlog stops subscribing to the 4th Binlog, so that data do not continue to copy in the 2nd MySQL node.
Optionally, described device further include:
Second generation module is arranged in the 2nd MySQL node, is used for after the update of the 2nd MySQL node data,
Generate the 3rd Binlog；
Second subscribing module is arranged in the 2nd arkgate, for subscribing to the 3rd Binlog；
Second conversion module is arranged in the 2nd arkgate, for converting the 2nd JSON data for the 3rd Binlog,
Then the 2nd JSON data are stored to the second data center；
Second read module is arranged in the 2nd adapter, for reading the 2nd JSON number from second data center
According to, and be converted into the second SQL statement；
First execution module is arranged in the first MySQL node, is used for the second SQL statement in the first MySQL node
It executes, then generates the 4th Binlog in the first MySQL node.
According to the technique and scheme of the present invention, when the first MySQL node data update after, described first
MySQL node generates the first Binlog, and the first Binlog is converted the first JSON data by the first arkgate, then will
First JSON data are stored to the first data center, and then the first adapter reads the first of first data center
JSON data, and it is translated into the first SQL statement, and mark is written in the 2nd MySQL node, later in the 2nd MySQL
The first SQL statement is executed in node, then twoth Binlog of the 2nd MySQL node generation containing mark, second
Arkgate identifies the mark in the 2nd Binlog, and then the 2nd arkgate stops subscribing to described second
Binlog, as soon as continuing to copy in MySQL node to interrupt data, the data of such first MySQL node are backuped to
In 2nd MySQL node, and the data in the 2nd MySQL node are backuped to, mark is stamped in backup procedure, it is described
First arkgate can recognize that the mark, and stop subscribing to, and the data would not be relayed in the first MySQL node in this way
Continuous recursive copying.
Detailed description of the invention
Attached drawing for a better understanding of the present invention, does not constitute an undue limitation on the present invention.Wherein:
Fig. 1 is the main modular schematic diagram of MySQL dual-active system related to the present invention；
Fig. 2 is showing for the key step of the method according to an embodiment of the present invention for preventing MySQL dual-active system circulation from replicating
It is intended to；
Fig. 3 is the schematic diagram according to the main modular of the improved MySQL dual-active system of the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing, an exemplary embodiment of the present invention will be described, including the various of the embodiment of the present invention
Details should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art should recognize
It arrives, it can be with various changes and modifications are made to the embodiments described herein, without departing from scope and spirit of the present invention.Together
Sample, for clarity and conciseness, descriptions of well-known functions and structures are omitted from the following description.
Name Resolution:
The system of the real-time isomeric data rotation transmission of arkgate:MySQL.
Adapter: being that a kind of data format or storage mode are converted to the data format or storage that client is expected
Mode plays the function served as bridge that different platform or system can dock very well.
Fig. 1 is the structural schematic diagram of MySQL dual-active system related to the present invention, wherein in MySQL dual-active system 10
First MySQL node 11 and the 2nd MySQL node 15 may serve to write-in task, and Binlog is generated after write-in task, the
One arkgate 12 and the 2nd arkgate 16 is mainly used to convert Binlog to JSON data, the first data center 13 with
And second data center 17 be mainly used to store JSON data, the first adapter 14 and the 2nd adapter 18 are mainly used to
SQL statement is converted by JSON data, is then executed in Correspondent Node.
Fig. 2 is showing for the key step of the method according to an embodiment of the present invention for preventing MySQL dual-active system circulation from replicating
It is intended to, this method can be realized by one as the device for preventing MySQL dual-active system circulation from replicating of software.Such as Fig. 2
Shown, which mainly includes the following steps, namely S211 to step S216.
The S211: the one MySQL node of step generates the first Binlog after data update.
The S212: the one arkgate of step identifies in the first Binlog whether contain mark, if described first
Do not indicate in Binlog, the first arkgate subscribes to the first Binlog, and converts for the first Binlog
Then one JSON data store the first JSON data to the first data center；If having mark in the first Binlog,
First arkgate stops subscribing to the first Binlog, and then interrupts data reproduction process.
Step S213: the first adapter reads the first JSON data in first data center, and by its turn
It is changed to the first SQL statement.
Step S214: mark is written in the first adapter in the 2nd MySQL node.
Step S215: the first adapter executes first SQL statement in the 2nd MySQL node, and then described
Two MySQL nodes generate the 2nd Binlog containing mark.
The S216: the two arkgate of step goes out the 2nd Binlog according to above-mentioned landmark identification, and then described second
Arkgate stops subscribing to the 2nd Binlog, continues to copy in the first MySQL node to interrupt data, and described in this way the
Data in one MySQL node, which just synchronize, have been copied in the 2nd MySQL node, and is synchronized in the 2nd MySQL node
Data cannot be in being replicated in the first MySQL node.
The method according to the present invention for preventing MySQL dual-active system circulation from replicating, the number of the first MySQL node
It is just backuped in the 2nd MySQL node according to that can synchronize, and backups to the data in the 2nd MySQL node, backed up
Mark has been stamped in the process, and the first arkgate can recognize that the mark, and stop subscribing to, and the data are not just in this way
It can continue recursive copying in the first MySQL node.
In addition step S211-S216 and step S221-S226 is symmetrical, so step S221-S226 is can to execute
, it is not shown in Fig. 2.
Step S221: when the 2nd MySQL node data update after, generate the 3rd Binlog.
Whether the S222: the two arkgate of step identifies containing mark in the 3rd Binlog, if the third
Do not indicate in Binlog, the 2nd arkgate subscribes to the 3rd Binlog, and converts for the 3rd Binlog
Then two JSON data store the 2nd JSON data to the second data center；If having mark in the 3rd Binlog,
2nd arkgate stops subscribing to the 3rd Binlog, and then interrupts data reproduction process.
Step S223: the 2nd adapter reads the first JSON data in second data center, and by its turn
It is changed to the second SQL statement.
Step S224: mark is written in the 2nd adapter in the first MySQL node.
Step S225: the 2nd adapter executes second SQL statement in the first MySQL node, and then described
One MySQL node generates the 4th Binlog containing mark.
The S226: the one arkgate of step goes out the 4th Binlog according to above-mentioned landmark identification, and then described first
Arkgate stops subscribing to the 4th Binlog, continues to copy in the 2nd MySQL node to interrupt data, and described in this way the
Data in two MySQL nodes, which just synchronize, have been copied in the first MySQL node, and is synchronized in the first MySQL node
Data cannot be in being replicated in the first MySQL node.
The method according to the present invention for preventing MySQL dual-active system circulation from replicating, the number of the 2nd MySQL node
According to can be with backed up in synchronization into the first MySQL node, and the data in the first MySQL node be backuped to, backed up
Mark is stamped in journey, the 2nd arkgate can recognize that the mark, and stop subscribing to, and the data would not in this way
Continue recursive copying in the 2nd MySQL node.
Fig. 3 is the schematic diagram of the main modular of improved MySQL dual-active system 30 according to an embodiment of the present invention.
As shown in figure 3, the device for preventing MySQL dual-active system circulation from replicating of the embodiment of the present invention includes: the first mark
Generation module 32 and the second recognition processing module 33, the first mark generation module 32, are arranged in the first adapter,
For mark to be written in the 2nd MySQL node；Second recognition processing module 33 is arranged in the 2nd arkgate, is used for
Go out the 2nd Binlog according to the landmark identification, then stop subscribing to the 2nd Binlog, so that data do not continue to copy to the
In one MySQL node.
Described device may also include (not shown): the first generation module, the first subscribing module, the first conversion module,
First read module, the second execution module, first generation module are arranged in the first MySQL node, for first
After MySQL node data updates, the first Binlog is generated；First subscribing module is arranged in the first arkgate,
For subscribing to the first Binlog；First conversion module is arranged in the first arkgate, for converting the first Binlog
For the first JSON data, then the first JSON data are stored to the first data center；First read module, setting is the
In one adapter, for reading the first JSON data from first data center, and it is converted into the first SQL statement；Institute
The second execution module is stated, is arranged in the 2nd MySQL node, for the first SQL statement to be executed in the 2nd MySQL node,
Then the 2nd Binlog is generated in the 2nd MySQL node.
Described device may also include that the second mark generation module 34, the first recognition processing module 31, the second mark life
At module 34, it is arranged in the 2nd adapter, for mark to be written in the first MySQL node；The first identifying processing mould
Block 31 is arranged in the first arkgate, for going out the 4th Binlog according to the landmark identification, then stops subscribing to the 4th
Binlog, so that data do not continue to copy in the 2nd MySQL node.
Described device may also include (not shown): the second generation module, the second subscribing module, the second conversion module,
Second read module, the first execution module, second generation module are arranged in the 2nd MySQL node, for second
After MySQL saves data update, the 3rd Binlog is generated；Second subscribing module is arranged in the 2nd arkgate, uses
In the 3rd Binlog of subscription；Second conversion module is arranged in the 2nd arkgate, for converting the 3rd Binlog to
Then 2nd JSON data store the 2nd JSON data to the second data center；Second read module is arranged second
In adapter, for reading the 2nd JSON data from second data center, and it is converted into the second SQL statement；It is described
First execution module is arranged in the first MySQL node, for executing the second SQL statement in the first MySQL node, so
The 4th Binlog is generated in the first MySQL node afterwards.
It may also be noted that in methods and apparatus of the present invention, it is clear that each component or each step are can to decompose
And/or reconfigure.These, which decompose and/or reconfigure, should be regarded as equivalent scheme of the invention.Also, execute above-mentioned series
The step of processing, can execute according to the sequence of explanation in chronological order naturally, but not need centainly sequentially in time
It executes.Certain steps can execute parallel or independently of one another.
Above-mentioned specific embodiment, does not constitute a limitation on the scope of protection of the present invention.Those skilled in the art should be bright
It is white, design requirement and other factors are depended on, various modifications, combination, sub-portfolio and substitution can occur.It is any
Made modifications, equivalent substitutions and improvements etc. within the spirit and principles in the present invention, should be included in the scope of the present invention
Within.
Claims (8)
1. a kind of method for preventing MySQL dual-active system circulation from replicating characterized by comprising
First MySQL node generates the first Binlog after data update；
The first Binlog is converted the first JSON data by first arkgate, then stores the first JSON data to the first number
According to center；
First adapter reads the first JSON data from first data center again, and is converted into the first SQL statement；
Mark is written in first adapter in the 2nd MySQL node；
First adapter executes first SQL statement in the 2nd MySQL node, and then the 2nd MySQL node is raw
At the 2nd Binlog containing mark；
2nd arkgate goes out the 2nd Binlog according to the landmark identification, then stops subscribing to the 2nd Binlog, so that data are not
It is further continued for copying in the first MySQL node.
2. the method according to claim 1 for preventing MySQL dual-active system circulation from replicating, which is characterized in that first
Arkgate converts the first Binlog to before the first JSON data, further includes: the first arkgate subscribes to described first
Binlog。
3. the method according to claim 1 for preventing MySQL dual-active system circulation from replicating, which is characterized in that further include:
2nd MySQL node generates the 3rd Binlog after data update；
The 3rd Binlog is converted the 2nd JSON data by 2nd arkgate, then stores the 2nd JSON data to the second number
According to center；
2nd adapter reads the 2nd JSON data from second data center again, and is converted into the second SQL statement；
Mark is written in 2nd adapter in the 2nd MySQL node；
2nd adapter executes second SQL statement in the first MySQL node, and then the first MySQL node is raw
At the 4th Binlog containing mark；
First arkgate goes out the 4th Binlog according to the landmark identification, then stops subscribing to the 4th Binlog, so that data are not
It is further continued for copying in the 2nd MySQL node.
4. the method according to claim 3 for preventing MySQL dual-active system circulation from replicating, which is characterized in that second
Arkgate converts the 3rd Binlog to before the 2nd JSON data, further includes: the 2nd arkgate subscribes to the third
Binlog。
5. a kind of device for preventing MySQL dual-active system circulation from replicating characterized by comprising
First mark generation module, is arranged in the first adapter, for mark to be written in the 2nd MySQL node；
Second recognition processing module is arranged in the 2nd arkgate, for going out the 2nd Binlog according to the landmark identification, so
Stop subscribing to the 2nd Binlog afterwards, so that data do not continue to copy in the first MySQL node.
6. the device according to claim 5 for preventing MySQL dual-active system circulation from replicating, which is characterized in that described device
Further include:
First generation module is arranged in the first MySQL node, for generating after the update of the first MySQL node data
First Binlog；
First subscribing module is arranged in the first arkgate, for subscribing to the first Binlog；
First conversion module is arranged in the first arkgate, for converting the first JSON data for the first Binlog, then
By the first JSON data storage to the first data center；
First read module is arranged in the first adapter, for reading the first JSON data from first data center,
And it is converted into the first SQL statement；
Second execution module is arranged in the 2nd MySQL node, for holding the first SQL statement in the 2nd MySQL node
Then row generates the 2nd Binlog in the 2nd MySQL node.
7. the device according to claim 5 for preventing MySQL dual-active system circulation from replicating, which is characterized in that further include:
Second mark generation module, is arranged in the 2nd adapter, for mark to be written in the 2nd MySQL node；
First recognition processing module is arranged in the first arkgate, for going out the 4th Binlog according to the landmark identification, so
Stop subscribing to the 4th Binlog afterwards, so that data do not continue to copy in the 2nd MySQL node.
8. the device according to claim 7 for preventing MySQL dual-active system circulation from replicating, which is characterized in that described device
Further include:
Second generation module is arranged in the 2nd MySQL node, for generating after the update of the 2nd MySQL node data
3rd Binlog；
Second subscribing module is arranged in the 2nd arkgate, for subscribing to the 3rd Binlog；
Second conversion module is arranged in the 2nd arkgate, for converting the 2nd JSON data for the 3rd Binlog, then
By the 2nd JSON data storage to the second data center；
Second read module is arranged in the 2nd adapter, for reading the 2nd JSON data from second data center,
And it is converted into the second SQL statement；
First execution module is arranged in the first MySQL node, for holding the second SQL statement in the first MySQL node
Then row generates the 4th Binlog in the first MySQL node.
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