CN102521256B - High-reliability data protection method of real-time/historical database - Google Patents
High-reliability data protection method of real-time/historical database Download PDFInfo
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Abstract
The invention discloses a high-reliability data protection method of a real-time/historical database, comprising the following steps of: A, a processing procedure of a data writing request; B, a processing procedure of establishing a sub-indexing system in compressed files from one or more real-time/historical databases; and C, a processing procedure of establishing a limited access sub-indexing system in the compressed files from one or more real-time/historical databases. According to the method provided by the invention, the safety of data in a real-time/historical database system can be protected, the losses caused by data loss or system damage are reduced, and the safety, the reliability and the integrity of perennial online data managed in the real-time/historical database system are improved.
Description
Technical field
The present invention relates to a kind of disposal route of database data, relate in particular to a kind of real-time/historical data base data guard method of high reliability.
Background technology
In real time/the historical data base system at home a lot of basic activities have very and use widely, in the industry of the flow process status data being had relatively high expectations such as electric power, typical case, chemical industry, iron and steel and high ferro etc., in real time/historical data base all undertaking very important role.
Be subjected to the influence of traditional data base management system, at present great majority in real time/the historical data base system follows traditional data management pattern: for a large amount of final datas set up directory system and with compression storing data in data file; And data query and returning when getting all according to following a series of processes: client submit to query requests, service software from directory system, find corresponding data position (data file, skew, data type and size of data), from the position of correspondence, read packed data, packed data, the screening that decompress(ion) reads and the data recording that will satisfy request and send to the client of submitting request to.
Therefore, at present great majority in real time/data of historical data base write and inquire about all is to revise earlier or search index infosystem, disposable access destination data then.Wherein just there is a problem in this, if a directory system of having stored mass data is damaged for a certain reason, a kind of may be to have stored online data for a long time to have become isolated data file, can't visit; In addition, even if existing some in real time/the historical data base product can be given the data in the isolated data file for change, but the process of operation is very tediously long slowly, have in addition need former software developer carry out test consuming time to attempt.
Can see, in real time/historical data base system applies today more and more widely, how to promote the scale amount huge in real time/the data security problem of historical data base becomes very urgent.Emphasis of the present utility model just relates to and provides a kind of real-time/historical data base data protection technology of high reliability.
Summary of the invention
The object of the present invention is to provide a kind of real-time/historical data base data guard method of high reliability; this method can protect in real time/the historical data base system in the safety of data; reduce because loss of data or directory system damage the loss that brings, promoted security, reliability and the integrality of the long-term online data of managing in real-time/historical data base system.
Purpose of the present invention can realize by following technical measures:
A kind of real-time/historical data base data guard method of high reliability comprises following content:
A, write data requests processing procedure:
A1), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system, database limited accass subindex system, be these two the corresponding storage spaces of sub-directory system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;
A2), submit to client database to be initiated to submit to the request of real time data by data;
A3), after database receives the request bag of submitting the real time data request to, at first the request bag is resolved, isolate the real-time data record array, then this record array is carried out data compression and obtained packed data, from the request bag, parse the some label ID of data association in addition simultaneously, obtain up-to-date being recorded in the subindex system of this ID according to a label ID and write index information, the content of described index information comprises the file ID of the targeted compression file at this label ID state-of-the-art record storage place;
A4), carry out three operations respectively in compressed file: at first, first operation is to set up the inner index information of compressed file in compressed file; Second operation is with steps A 3) packed data that obtains is written to the up-to-date writing position in packed data section space; The 3rd operation is to set up the meta file information that database subindex system oppositely makes up that offers at the meta file information space, the item of information of described meta file information comprises: write a label, write compressed file ID, write document misregistration, write the file data size; Three steps are all entered next step after the success, otherwise count out, and withdraw from the processing procedure of this method;
A5), according to steps A 4) the inside meta file information that produces the index entry that needs in the limited accass subindex system of constructs database system; Do not need database that application limited accass function, then method ends processing procedure are provided if disposed in the database; Otherwise, enter next step;
A6), judge the current reference time data that writes whether in the permission access time of limited accass range list, if then the current index information that writes data is joined in the limited accass subindex system, and the method ends processing procedure; Otherwise, direct method ends processing procedure;
B, from one or more in real time/historical data base sets up the processing procedure of subindex system compressed file:
B1), the corresponding physics index file of backup existing database subindex system;
B2), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system, be the corresponding storage space of subindex system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;
B3), enumerate the file at the compressed file place of retrieval filing, according to the sequence number of compressed file from small to large, enumerate the tabulation of whole compressed files, read the internal information of each compressed file successively and oppositely set up index process;
B4), to step B3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through compression data blocks all in the current compressed file;
B5), each compression blocks that decompresses, obtain the time range information in the compression blocks, read corresponding meta file information simultaneously, construct corresponding index entry, index entry is joined in the subindex system rebuilds index;
B6), by that analogy, all processed finishing of compression data block in all compressed files;
B7), by that analogy, all compressed files are processed in the archival compression listed files finishes;
C, from one or more in real time/historical data base sets up the processing procedure of limited accass subindex system compressed file:
C1), backup existing database limited accass subindex system corresponding physics index file, the mode of the described backup naming method of attaching most importance to;
C2), according to the some label capacity sum of database configuration appointment, initialization data storehouse limited accass subindex system, be the corresponding storage space of limited accass subindex system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;
C3), enumerate the file at the compressed file place of retrieval filing, enumerate existing compressed archive file tabulation from small to large according to the sequence number of compressed file, read the internal information of each compressed file successively and oppositely set up index process;
C4), to step C3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through compression data blocks all in the current compressed file;
C5), each compression blocks that decompresses, obtain the time range information of compression blocks, according to time range information, judge whether this time range allows in the tabulation at limited accass, if, then according to meta file information the detailed data block message is joined in the subindex system and rebuild index, if not, the processing of then skipping this compression data block;
C6), by that analogy, all processed finishing of compression data block in all compressed files;
C7), by that analogy, all compressed files are processed in the compressed file tabulation of filing finishes.
Described step B1) and the mode of the backup C1) naming method of attaching most importance to.
Described steps A 4) in, when running into that some step wherein runs succeeded and follow-up step is carried out under the situation of failure, in real time/transaction management system of historical data base system can carry out necessary rolling back action, to guarantee in real time/atomicity of historical data base system transaction.
The present invention contrasts prior art, and following advantage is arranged:
1, this method realizes being applicable to any in the higher field of data security requirement, strengthened at present in real time/the historical data base system in the reliability of mass data;
2, under the impaired situation of directory system of the database that makes of this method, still can provide the normal visit to packed data;
3, under the impaired situation of directory system of the database that makes of this method, can oppositely set up directory system by the compression data file that exists, finally realize online recovery;
4, this method can more safely protect the production data information of special time period, and offline access or online local data's visit are provided;
5, this method can more safely protect the production data information of special compression file, and offline access or online local data's visit are provided.
Description of drawings
Fig. 1 is that the system of this method forms module diagram;
Fig. 2 is the process flow diagram of this method write data requests processing procedure;
Fig. 3 is that the internal logic structure of compressed file of the database of this method is formed synoptic diagram.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, can implement with reference to the instructions literal to make those skilled in the art.
A kind of real-time/historical data base data guard method of high reliability comprises following content:
As shown in Figure 1, this real-time/historical data base system logic composition module is: the reading and writing data client (100) under the normal condition; Read-write client (200) under the fault recovery situation; Read-write client (300) under the limited accass condition; In real time/system of global index of historical data base system (400); In real time/and historical data base system compresses file (500), wherein comprise the raw data section (510) of this compressed file, the inside index information (520) of this compressed file and the meta file information (530) between inner index and global index of this compressed file; The subindex system (600) of part or particular piece of data.
A, write data requests processing procedure, treatment scheme be as shown in Figure 2:
A1), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system (600), database limited accass subindex system (610), be these two the corresponding storage spaces of sub-directory system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index; (610) all be directory system with (600), structure, functional similarity, just different with purposes, (610) are to be exclusively used in data security than higher data, can only offer user's visit that some have super-ordinate right, at this time, the user of these high authorities just by (610) directory system, finally just can have access to security and compare higher data.
A2), submit to client (100) database to be initiated to submit to the request of real time data by data; Described real time data can be the real time data of power industry.
A3), after database receives the request bag of submitting the real time data request to, at first the request bag is resolved, isolate the real-time data record array, then this record array is carried out data compression and obtained packed data, from the request bag, parse the some label ID of data association in addition simultaneously, obtain in the up-to-date subindex system that is recorded in (600) of this ID according to a label ID and to write index information, the content of described index information comprises the file ID of the targeted compression file (500) at this label ID state-of-the-art record storage place; Filename formation rule according to file ID and acquiescence, can obtain up-to-date targeted compression file full name, be 18 as file ID, then Dui Ying targeted compression file is called TSD00000018.tsd), with the current file size in the targeted compression file (500), the data recording sum, the concrete up-to-date numerical digit of writing is put;
A4), as shown in Figure 3, the structure of compressed file (500) is divided three parts, first is that the foremost segment space is kept for the inner index information (520) of compressed file, the total number of records (as 4,000,000) that can store according to single compressed file, calculate the needed maximum space of its index, second portion is that the inner index information of compressed file (520) offers the meta file information space (530) that database subindex system (600) oppositely makes up, and third part is packed data section space (510).In compressed file (500), carry out three operations respectively: at first, for compressed file (500) can provide the offline access function, first operation is to set up the inner index information (520) of compressed file in compressed file, construct corresponding inner index according to the record array of writing compressed file at every turn later on, can guarantee like this when carrying out the off-line data visit, also can obtain inquiry velocity more efficiently; Second operation is the up-to-date writing position that the packed data that step 3) obtains is written to packed data section space (510), and this is the operating writing-file of a routine; The 3rd operation is to set up the meta file information that database subindex system (600) oppositely makes up that offers at meta file information space (530), the item of information of described meta file information comprises: write a label, write compressed file ID, write document misregistration, write the file data size; The effect of meta file information is the bridge between the inner index of compressed file and the subindex system (600), group directory system (600) can oppositely be set up new subindex system (600) by inside index information (520) and the inner meta file information (530) of compressed file when being damaged.It is exactly in following step that certain inner meta file information (530) also has an effect, need set up limited accass subindex system (610) if real-time/historical data base system arranges in the operation configuration, then meta file information is to set up the necessary data of limited accass subindex system (610); Three steps are all entered next step after the success, otherwise count out, and withdraw from the processing procedure of this method.Wherein, when running into that some step wherein runs succeeded and follow-up step is carried out under the situation of failure, in real time/transaction management system of historical data base system can carry out necessary rolling back action, to guarantee in real time/atomicity of historical data base system transaction.
A5), according to steps A 4) the inside meta file information that produces the index entry that needs in the limited accass subindex system of constructs database system (610); Do not need database that application limited accass function, then method ends processing procedure are provided if disposed in the database; Otherwise, enter next step;
A6), judge the current reference time data that writes whether in the permission access time of limited accass range list, if then the current index information that writes data is joined in the limited accass subindex system (610), and the method ends processing procedure; Otherwise, direct method ends processing procedure.
B, from one or more in real time/historical data base sets up the processing procedure of subindex system (610) compressed file (500):
B1), the corresponding physics index file of backup existing database subindex system (600); The mode of the described backup naming method of attaching most importance to; Generally speaking, in the time of need oppositely setting up index, all be because index has been damaged, may be that part is damaged, so before oppositely setting up index, need the old directory system of backup, because the process cover type of setting up, after oppositely setting up index, just directly replace previous index, used database recovery normal.
B2), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system (600), be the corresponding storage space of subindex system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;
B3), enumerate the file at the compressed file place of retrieval filing, according to the sequence number of compressed file from small to large, (for example: TSD********.tsd), read the internal information of each compressed file successively and oppositely set up index process enumerate the tabulation of whole compressed files;
B4), to step B3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through all compression data blocks in the current compressed file (500); Enumerate for example: suppose that the archival compression file is data/, there are three compressed files the inside, as TSD00000001.tsd, TSD00000002.tsd, TSD00000003.tsd, enumerate these three compressed file names after, handle this three files respectively: open and be loaded into internal memory.
B5), each compression blocks that decompresses, obtain the time range information in the compression blocks, read corresponding meta file information simultaneously, construct corresponding index entry, index entry is joined in the subindex system (600) rebuilds index;
B6), by that analogy, all processed finishing of compression data block in all compressed files;
B7), by that analogy, all compressed files are processed in the archival compression listed files finishes;
C, from one or more in real time/historical data base sets up the processing procedure of limited accass subindex system (610) compressed file (500):
C1), the corresponding physics index file of backup existing database limited accass subindex system (610), the mode of the described backup naming method of attaching most importance to;
C2), according to the some label capacity sum of database configuration appointment, initialization data storehouse limited accass subindex system (610), be the corresponding storage space of limited accass subindex system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;
C3), enumerate the file at the compressed file place of retrieval filing, sequence number according to compressed file (for example: TSD********.tsd), read the internal information of each compressed file successively and oppositely set up index process enumerates existing compressed archive file tabulation from small to large;
C4), to step C3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through all compression data blocks in the current compressed file (500);
C5), each compression blocks that decompresses, obtain the time range information of compression blocks, according to time range information, judge whether this time range allows in the tabulation at limited accass, if, then according to meta file information the detailed data block message is joined in the subindex system (600) and rebuild index, if not, the processing of then skipping this compression data block;
C6), by that analogy, all processed finishing of compression data block in all compressed files.
C7), by that analogy, all compressed files are processed in the compressed file tabulation of filing finishes.
Embodiments of the present invention are not limited thereto; under the above-mentioned basic fundamental thought of the present invention prerequisite;, all drop within the rights protection scope of the present invention modification, replacement or the change of other various ways that content of the present invention is made according to the ordinary skill knowledge of this area and customary means.
Claims (3)
- A high reliability in real time/the historical data base data guard method, it is characterized in that comprising following content:A, write data requests processing procedure:A1), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system, Database Systems limited accass subindex system, be these two the corresponding storage spaces of sub-directory system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;A2), submit to client database to be initiated to submit to the request of real time data by data;A3), after database receives the request bag of submitting the real time data request to, at first the request bag is resolved, isolate the real-time data record array, then this record array is carried out data compression and obtained packed data, from the request bag, parse the some label ID of data association in addition simultaneously, obtain up-to-date being recorded in the subindex system of this ID according to a label ID and write index information, the content of described index information comprises the file ID of the targeted compression file at this label ID state-of-the-art record storage place;A4), carry out three operations respectively in compressed file: at first, first operation is to set up the inner index information of compressed file in compressed file; Second operation is with steps A 3) packed data that obtains is written to the up-to-date writing position in packed data section space; The 3rd operation is to set up the meta file information that database subindex system oppositely makes up that offers at the meta file information space, the item of information of described meta file information comprises: write a label, write compressed file ID, write document misregistration, write the file data size; Three operations all enter next step after the success, otherwise count out, and withdraw from the processing procedure of this method;A5), according to steps A 4) the inside meta file information that produces the index entry that needs in the limited accass subindex system of constructs database system; Do not need database that application limited accass function, then method ends processing procedure are provided if disposed in the database; Otherwise, enter next step;A6), judge that the current reference time data that writes is whether in the permission access time of limited accass range list, if, then the current index information that writes data is joined in the Database Systems limited accass subindex system, and the method ends processing procedure; Otherwise, direct method ends processing procedure;B, from one or more in real time/historical data base sets up the processing procedure of database subindex system compressed file:B1), the corresponding physics index file of backup existing database subindex system;B2), according to the some label capacity sum of database configuration appointment, initialization data storehouse subindex system, be the corresponding storage space of database subindex system application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;B3), enumerate the compressed file of file at the compressed file place of filing, according to the sequence number of compressed file from small to large, enumerate the tabulation of whole compressed files, read the internal information of each compressed file successively and oppositely set up index process;B4), to step B3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through compression data blocks all in the current compressed file;B5), each compression data block that decompresses, obtain the time range information in the compression data block, read corresponding meta file information simultaneously, construct corresponding index entry, index entry is joined in the database subindex system rebuilds index;B6), by that analogy, all processed finishing of compression data block in all compressed files;B7), by that analogy, all compressed files are processed in the archival compression listed files finishes;C, from one or more in real time/historical data base sets up the processing procedure of Database Systems limited accass subindex system compressed file:C1), the corresponding physics index file of backup existing database limited accass subindex system of system;C2), according to the some label capacity sum of database configuration appointment, limited accass subindex system of initialization data storehouse system, be the corresponding storage space of Database Systems limited accass subindex system's application, according to the corresponding Hash structure tree of a label configurations, for the time interocclusal record of each some label is set up search index;C3), enumerate the compressed file of file at the compressed file place of filing, enumerate existing compressed archive file tabulation from small to large according to the sequence number of compressed file, read the internal information of each compressed file successively and oppositely set up index process;C4), to step C3) each compressed file of enumerating out, inside index information and the meta file information of at first loading compressed file arrive internal memory, according to the compression data block document misregistration in the inner index information and packed data block size, travel through compression data blocks all in the current compressed file;C5), each compression data block that decompresses, obtain the time range information of compression data block, according to time range information, judge whether this time range allows in the tabulation at limited accass, if, then according to meta file information the detailed data block message is joined in the subindex system and rebuild index, if not, the processing of then skipping this compression data block;C6), by that analogy, all processed finishing of compression data block in all compressed files;C7), by that analogy, all compressed files are processed in the compressed file tabulation of filing finishes.
- High reliability according to claim 1 in real time/the historical data base data guard method, described step B1) and the mode of the backup C1) naming method of attaching most importance to it is characterized in that:.
- High reliability according to claim 1 in real time/the historical data base data guard method; it is characterized in that: described steps A 4); when running into that some step wherein runs succeeded and follow-up step is carried out under the situation of failure; in real time/transaction management system of historical data base system can carry out necessary rolling back action, to guarantee in real time/atomicity of historical data base system transaction.
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| US9047330B2 (en) * | 2008-10-27 | 2015-06-02 | Ianywhere Solutions, Inc. | Index compression in databases |
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| CN104866508A (en) * | 2014-02-26 | 2015-08-26 | 中国电信股份有限公司 | Method and device for managing files in cloud environment |
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| CN107895039A (en) * | 2017-11-29 | 2018-04-10 | 华中科技大学 | A kind of construction method of campus network Verification System log database |
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