CN109408551A - Data query method and system, common recognition method and system, equipment and storage medium - Google Patents
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Abstract
The present invention provides a kind of data query method and system, common recognition method and system, equipment and storage medium, each node of block chain network is stored with the Merkel tree of each block respectively, and global index's table of the Merkel tree corresponding to each block, the version number of above-mentioned version is block height, which includes: reception inquiry instruction；Wherein, inquiry instruction includes the first inquired block height；Target data is searched in global index's table according to the first block height.The present invention by for Merkel tree configure it is corresponding, using block height as global index's table of version number, and target data is searched in global index's table by inquired block height, it realizes and inquiry to Merkel's leaf node data in block chain can be completed by a read operation, to greatly improve the reading data performance of system.
Description
Technical field
This application involves block chain technical fields, and in particular to a kind of data query method and system, common recognition method and is
System, equipment and storage medium.
Background technique
In the solution of the reading and writing data of current block catenary system, it will usually utilize Merkel tree (Merkle Tree)
Structure, such as in the system of bit coin by Merkel tree carry out spv verifying, ether mill system in pass through Merkel's prefix
Set the read-write, etc. that (Merkle Patricia Tree, abbreviation MPT) carries out data.
The current defect for carrying out data query by Merkel tree is that the data of one transaction of inquiry are needed by multiple
Read operation is completed, for example, the data for inquiring a leaf node need to carry out 20 readings for one 20 layers of Merkel tree
Operation to complete, cause data query efficiency be only general data library search efficiency 1/20,10 can be completed for per second
The system of ten thousand read operations, the data per second for being only capable of reading 5000 transactions, substantially limits the reading performance of system.
Summary of the invention
In view of drawbacks described above in the prior art or deficiency, being intended to provide one kind by a read operation can be completed block
Data query method and system, common recognition method and system, equipment and the storage medium that transaction data is inquired in chain.
In a first aspect, the present invention provides a kind of data query method, each node of block chain network is stored with each respectively
The Merkel tree of block, and global index's table of the Merkel tree corresponding to each block, global index's table is with block height
Degree is version number, and the above method includes:
Receive inquiry instruction；Wherein, inquiry instruction includes the first inquired block height；
Target data is searched in global index's table according to the first block height.
Second aspect, the present invention provide a kind of data query system, are configured in the node of block chain network, and node includes
First data storage cell and the second data storage cell；
First data storage cell is configured to store the Merkel tree of each block；
Second data storage cell is configured to global index's table that storage corresponds to the Merkel tree of each block；
Global index's table is using block height as version number；
The data query system includes receiving unit and query unit；
Receiving unit is configured to receive inquiry instruction；Wherein, inquiry instruction includes the first inquired block height；
Query unit is configured to search target data in global index's table according to the first block height.
The third aspect, the present invention also provides a kind of common recognition methods, comprising:
Business datum needed for searching transaction by above-mentioned data query method；
According to the Merkel tree of business datum and transaction building latest edition；
Global index's table is updated according to the Merkel tree of latest edition, by the root node Hash of the Merkel tree of latest edition
It is packed into block and knows together；
The Merck of each block stored is updated according to the Merkel tree of latest edition or updated global index's table
You set.
Fourth aspect, the present invention also provides a kind of common recognition system, including searching unit, construction unit, the first storage unit,
Common recognition unit and the second storage unit；
Searching unit is configured to business datum needed for above-mentioned data query system searches transaction；
Construction unit is configured to the Merkel tree according to business datum and transaction building latest edition；
First memory cell arrangements are used to update global index's table according to the Merkel tree of latest edition；
Common recognition unit is configured to the Merkel tree of latest edition after the first storage unit updates complete office's concordance list
Root node Hash be packed into block and know together；
Second memory cell arrangements are used to update institute according to the Merkel tree of latest edition or updated global index's table
The Merkel tree of each block of storage.
5th aspect, the present invention also provides a kind of equipment, including one or more processors and memory, wherein memory
Comprising can by instruction that the one or more processors execute so that the one or more processors execute it is each according to the present invention
The method that embodiment provides.
6th aspect, the present invention also provides a kind of storage medium for being stored with computer program, which makes to count
Calculation machine executes the method that each embodiment provides according to the present invention.
Data query method and system, common recognition method and system, equipment and the storage that many embodiments of the present invention provide are situated between
Matter by for Merkel tree configure it is corresponding, using block height as global index's table of version number, and pass through inquired area
Block height searches target data in global index's table, and realizing can be completed by a read operation to Merkel in block chain
The inquiry of leaf node data, to greatly improve the reading data performance of system；
Data query method and system, common recognition method and system, equipment and the storage that some embodiments of the invention provide are situated between
Matter further by the way that only a record Merkel tree is newly-increased or the leaf node modified in global index's table, thus significantly reduce for
Multi version Merkel tree configures data redundancy brought by global index's table；
Common recognition method and system, equipment and the storage medium that some embodiments of the invention provide pass through according to the global rope of inquiry
Draw the Merkel tree for the data building latest edition that table obtains, and root node Hash is packaged and is known together, realizes without to the overall situation
Concordance list, which is known together, can ensure that the safety of global index's table；Simultaneously also by being packaged after updating complete office's concordance list
Block is known together, without etc. complete stored each block to be updated Merkel tree after be packaged common recognition again, be substantially improved
The speed of block is packaged during common recognition.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 is the correspondence diagram of multi version Merkel tree and global index's table in one embodiment of the invention.
Fig. 2 is a kind of flow chart for data query method that one embodiment of the invention provides.
Fig. 3 is a kind of flow chart for common recognition method that one embodiment of the invention provides.
Fig. 4 is a kind of structural schematic diagram for data query system that one embodiment of the invention provides.
Fig. 5 is a kind of structural schematic diagram for common recognition system that one embodiment of the invention provides.
Fig. 6 is a kind of structural schematic diagram for equipment that one embodiment of the invention provides.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In the present embodiment, each node of block chain network is stored with the Merkel tree of each block respectively, and corresponding
In global index's table of the Merkel tree of each block, above-mentioned Merkel tree and global index's table are using block height H as version number.
Specifically, in the present embodiment, above-mentioned Merkel tree concrete configuration is Merkel's State Tree (Merkle State
Tree), level configurations are 20 layers, are stored in key assignments (key-value) database of node local, global index's table is stored in
In another database of node local；In more embodiments, it is normal this field can be configured by Merkel tree according to actual needs
Other different types of Merkel trees, different height, the other different types commonly used in the art for being stored in node local
Database in, Merkel tree and global index's table can also be stored in same database, identical technology can be achieved
Effect.
Fig. 1 is the correspondence diagram of multi version Merkel tree and global index's table in one embodiment of the invention.Below
In conjunction with Fig. 1, by taking height is 3 layers of Merkel's y-bend State Tree and the corresponding relationship of global index's table as an example, to the present invention program
Middle multi version Merkel tree and the corresponding relationship of global index's table are described in detail.
As shown in Figure 1, having recorded the root for Merkel's y-bend State Tree that version number is 8 in the block of block height H=8
Node Hash H1234；Accordingly, 4 leaf nodes and 3 for having Merkel's y-bend State Tree are recorded in each node local data base
A index node, and K is recorded by global index's table1-K4In the change procedure of version number 1-8.Wherein, K1-K4For 4 accounts,
V1-V4For the remaining sum of 4 accounts, H1-H4For (K1,V1)-(K4,V4) cryptographic Hash.
When the block of block height H=9 has been packaged a K4Account is paid (or gathering), remaining sum by V4Become V4'
When transaction；Correspondingly, the kv database of node local increases a leaf node H newly4', and increase corresponding index node newly
H34' and root node H1234', wherein H4' it is (K4,V4') cryptographic Hash；The database of global index's table is stored in global index's table
In increase newly version number be 9 record (K4,V4′)。
It follows that the present invention, which passes through, configures corresponding global index's table for the Merkel tree of each block stored,
By the tree construction conversion of layer stereo for the table structure of plane, so that the performance optimization of data query has feasibility.
Data query method provided by the invention is discussed in detail below in conjunction with Fig. 2.
Fig. 2 is a kind of flow chart for data query method that one embodiment of the invention provides.As shown in Fig. 2, in this implementation
In example, the present invention provides a kind of data query method, comprising:
S12: inquiry instruction is received；Wherein, inquiry instruction includes the first inquired block height；
S14: target data is searched in global index's table according to the first block height.
It is successively searched compared to traditional root node Hash according to Merkel tree, until finding the leaf of corresponding data
The querying method of node, data query method provided by the invention only need directly without searching Merkel tree to complete
Office's concordance list is searched.
Specifically, in the present embodiment, global index's table as shown in Figure 1, only record current version in each version
The leaf node for increasing newly or modifying in Merkel tree, such as in Fig. 1, the leaf node (K of record modification in version 94,
V4'), and the leaf node (K that record is not modified is not repeated1,V1)、(K2,V2) and (K3,V3)。
In step s 12, inquiry instruction is received, for example, in the version of inquiry H=83, K3The remaining sum of account；
In step S14, inquire in the version of H=83 whether recorded K in global index's table3The remaining sum of account:
It is then to return to the target data found；
It is no, then pass through the pointer forward slip of database, inquires in the version of H=82 whether recorded K3Account it is remaining
Volume, for circulation until finding target data, which only needs a read operation can be completed.
In another embodiment, global index's table can also record the institute of the Merkel tree of current version in each version
There is leaf node, such as in Fig. 1, in addition to the leaf node (K of record modification in version 94,V4') outside, it also records and does not repair
Leaf node (the K changed1,V1)、(K2,V2) and (K3,V3)。
The embodiment and above-mentioned global index's table only record the leaf section for increasing newly or modifying in the Merkel tree of current version
The difference of the embodiment of point is, target data can be directly found in step S14, but needs to remember in global index's table
Record more redundant data.
Above-described embodiment by for Merkel tree configure it is corresponding, using block height as global index's table of version number,
And target data is searched in global index's table by inquired block height, realizing can be completed by a read operation
Inquiry to Merkel's leaf node data in block chain, to greatly improve the reading data performance of system；
And further by the way that only record Merkel tree is newly-increased in global index's table or modifies in wherein some embodiments
Leaf node, thus significantly reduce for multi version Merkel tree configure global index's table brought by data redundancy.
Fig. 3 is a kind of flow chart for common recognition method that one embodiment of the invention provides.As shown in figure 3, in the present embodiment,
The present invention also provides common recognition methods performed by the node in a kind of block chain network, comprising:
S22: business datum needed for searching transaction by above-mentioned data query method；
S24: according to the Merkel tree of business datum and transaction building latest edition；
S26: global index's table is updated according to the Merkel tree of latest edition, by the root node of the Merkel tree of latest edition
Hash is packed into block and knows together；
S28: each block stored is updated according to the Merkel tree of latest edition or updated global index's table
Merkel tree.
Specifically, equally by taking Merkel tree shown in FIG. 1 and global index's table as an example, current block height H=8 is received
One K4The transaction that account is paid:
In step S22, K is found according to above-mentioned data query method shown in Fig. 24The remaining sum V of account4；
In step s 24, according to the remaining sum V found4The remaining sum V after transaction is calculated with the fund of transaction payment4',
The Merkel tree of latest edition H=9 is constructed in memory；
In step S26, according in the Merkel tree of latest edition constructed by step S24 more new node local data base
Global index's table, and after writing global index's table, by the root node Hash H of the Merkel tree of latest edition1234' be packed into
It knows together in block；
Wherein, lead to the remaining sum V before transaction if global index's table that node is locally stored is tampered4It is incorrect, then it calculates
Remaining sum V after transaction out4', the root node Hash H of the Merkel tree of latest edition1234' incorrect, so as to cause packing
Block can not pass through common recognition；Therefore, this method can ensure that global index's table that node is locally stored is not necessarily to through common recognition, but only
With good grounds correct global index's table block generated can pass through common recognition；
It, can the Merkel tree for carrying out each block synchronous with the update of global index's table in step S26 in step S28
Update, the data of memory are write in node local data base；It can also be after updating complete office's concordance list, according to update
Global index's table afterwards updates the Merkel tree of each block.
Above-described embodiment constructs the Merkel tree of latest edition by the data obtained according to inquiry global index's table, and will
Root node Hash is packaged common recognition, realizes and can ensure that the safety of global index's table without being known together to global index's table；
Also known together simultaneously by being packaged block after updating complete office's concordance list, without etc. complete each block to be updated it is silent
Common recognition is packaged after Ke Er tree again, greatly improves the speed of packing block during common recognition.
Fig. 4 is a kind of structural schematic diagram for data query system that one embodiment of the invention provides.Data shown in Fig. 4 are looked into
Inquiry system, which can correspond to, executes method shown in Fig. 2.
As shown in figure 4, in the present embodiment, the present invention provides a kind of data query system 10, configure in block chain network
Node 20 in, in node 20 be configured with the first data storage cell 201 and the second data storage cell 202；
First data storage cell 201 is configured to store the Merkel tree of each block；
Second data storage cell 202 is configured to global index's table that storage corresponds to the Merkel tree of each block；
Global index's table is using block height as version number；
Data query system 10 includes receiving unit 101 and query unit 103；
Receiving unit 101 is configured to receive inquiry instruction；Wherein, inquiry instruction includes that the first inquired block is high
Degree；
Query unit 103 is configured to search target data in global index's table according to the first block height.
The inquiry principle of system shown in Figure 4 can refer to method shown in Fig. 2, and details are not described herein again.
Fig. 5 is a kind of structural schematic diagram for common recognition system that one embodiment of the invention provides.System shown in Figure 5 can be corresponded to and be held
Row method shown in Fig. 3.
As shown in figure 5, in the present embodiment, the present invention also provides a kind of common recognition systems 30, configure in node 20, including
Searching unit 301, construction unit 303, the first storage unit 305, common recognition unit 307 and the second storage unit 309.
Searching unit 301 is configured to business datum needed for above-mentioned data query system 10 searches transaction；
Construction unit 303 is configured to the Merkel tree according to business datum and transaction building latest edition；
First storage unit 305 is configured to update global index's table according to the Merkel tree of latest edition；
Common recognition unit 307 is configured to the silent of latest edition after the first storage unit 305 updates complete office's concordance list
The root node Hash of Ke Er tree, which is packed into block, knows together；
Second storage unit 309 is configured to be updated according to the Merkel tree of latest edition or updated global index's table
The Merkel tree of each block.
The operation logic of system shown in Figure 5 can refer to method shown in Fig. 3, and details are not described herein again.
Fig. 6 is a kind of structural schematic diagram for equipment that one embodiment of the invention provides.
As shown in fig. 6, present invention also provides a kind of equipment 600, including one or more centres as on the other hand
Unit (CPU) 601 is managed, can be added according to the program being stored in read-only memory (ROM) 602 or from storage section 608
The program that is downloaded in random access storage device (RAM) 603 and execute various movements appropriate and processing.In RAM603, also deposit
It contains equipment 600 and operates required various programs and data.CPU601, ROM602 and RAM603 pass through the phase each other of bus 604
Even.Input/output (I/O) interface 605 is also connected to bus 604.
I/O interface 605 is connected to lower component: the importation 606 including keyboard, mouse etc.；It is penetrated including such as cathode
The output par, c 607 of spool (CRT), liquid crystal display (LCD) etc. and loudspeaker etc.；Storage section 608 including hard disk etc.；
And the communications portion 609 of the network interface card including LAN card, modem etc..Communications portion 609 via such as because
The network of spy's net executes communication process.Driver 610 is also connected to I/O interface 605 as needed.Detachable media 611, such as
Disk, CD, magneto-optic disk, semiconductor memory etc. are mounted on as needed on driver 610, in order to read from thereon
Computer program be mounted into storage section 608 as needed.
Particularly, in accordance with an embodiment of the present disclosure, the method for any of the above-described embodiment description may be implemented as computer
Software program.For example, embodiment of the disclosure includes a kind of computer program product comprising be tangibly embodied in machine readable
Computer program on medium, the computer program include the program code for executing method.In such embodiments,
The computer program can be downloaded and installed from network by communications portion 609, and/or be pacified from detachable media 611
Dress.
As another aspect, present invention also provides a kind of computer readable storage medium, the computer-readable storage mediums
Matter can be computer readable storage medium included in the device of above-described embodiment；It is also possible to individualism, it is unassembled
Enter the computer readable storage medium in equipment.Computer-readable recording medium storage has one or more than one program, should
Program is used to execute by one or more than one processor is described in the present processes.
Flow chart and block diagram in attached drawing are illustrated according to the system of various embodiments of the invention, method and computer journey
The architecture, function and operation in the cards of sequence product.In this regard, each box in flowchart or block diagram can generation
A part of one module, program segment or code of table, a part of the module, program segment or code include one or more use
The executable instruction of the logic function as defined in realizing.It should also be noted that in some implementations as replacements, being marked in box
The function of note can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated are actually
It can be basically executed in parallel, they can also be executed in the opposite order sometimes, this is depending on related function.Also it wants
It is noted that the combination of each box in block diagram and or flow chart and the box in block diagram and or flow chart, Ke Yitong
The dedicated hardware based system of functions or operations as defined in executing is crossed to realize, or by specialized hardware and can be calculated
The combination of machine instruction is realized.
Being described in the embodiment of the present application involved unit or module can be realized by way of software, can also be with
It is realized by way of hardware.Described unit or module also can be set in the processor, for example, each unit can
To be the software program being arranged in computer or intelligent movable equipment, it is also possible to the hardware device being separately configured.Wherein, this
The title of a little units or module does not constitute the restriction to the unit or module itself under certain conditions.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from the application design, appointed by above-mentioned technical characteristic or its equivalent feature
Other technical solutions of meaning combination and formation.Such as features described above and (but being not limited to) disclosed herein have similar functions
Technical characteristic replaced mutually and the technical solution that is formed.
Claims (12)
1. a kind of data query method, which is characterized in that each node of block chain network is stored with the Merck of each block respectively
You set, and global index's table of the Merkel tree corresponding to each block, global index's table are with block height
Version number, which comprises
Receive inquiry instruction；Wherein, the inquiry instruction includes the first inquired block height；
Target data is searched in global index's table according to the first block height.
2. the method according to claim 1, wherein only record is current in each version for global index's table
The leaf node for increasing newly or modifying in the Merkel tree of version；
It is described target data is searched in global index's table according to the first block height to include:
Target data is searched in the version of the first block height:
If not finding, target data is searched in last revision, circulation current procedures are until find target data.
3. the method according to claim 1, wherein global index's table records current version in each version
All leaf nodes of this Merkel tree.
4. method according to claim 1-3, which is characterized in that the Merkel tree is Merkel's State Tree,
It is stored in key assignments (key-value) database.
5. a kind of common recognition method characterized by comprising
Business datum needed for searching transaction by data query method according to any one of claims 1-4；
According to the Merkel tree of the business datum and the transaction building latest edition；
Global index's table is updated according to the Merkel tree of the latest edition, by the root of the Merkel tree of the latest edition
Node Hash, which is packed into block, knows together；
The Merkel tree of each block is updated according to the Merkel tree of the latest edition or updated global index's table.
6. a kind of data query system is configured in the node of block chain network, which is characterized in that the node includes the first number
According to storage unit and the second data storage cell；
First data storage cell is configured to store the Merkel tree of each block；
Second data storage cell is configured to global index's table that storage corresponds to the Merkel tree of each block；
Global index's table is using block height as version number；
The system comprises:
Receiving unit is configured to receive inquiry instruction；Wherein, the inquiry instruction includes the first inquired block height；
Query unit is configured to search target data in global index's table according to the first block height.
7. system according to claim 6, which is characterized in that second storage unit is further configured to described
The leaf node for increasing newly or modifying in the Merkel tree of current version is recorded in each version of global index's table；
The query unit is further configured to search target data in the version of the first block height: if not searching
It arrives, then searches target data in last revision, circulation is until find target data.
8. system according to claim 6, which is characterized in that second storage unit is further configured to described
All leaf nodes of the Merkel tree of current version are recorded in each version of global index's table.
9. according to the described in any item systems of claim 6-8, which is characterized in that the Merkel tree is Merkel's State Tree,
It is stored in key assignments (key-value) database.
10. a kind of common recognition system characterized by comprising
Searching unit, the data query system being configured to as claim in any one of claims 6-9 are searched needed for transaction
Business datum；
Construction unit is configured to the Merkel tree according to the business datum and the transaction building latest edition；
First storage unit is configured to update global index's table according to the Merkel tree of the latest edition；
Common recognition unit, is configured to the latest edition after first storage unit has updated global index's table
The root node Hash of Merkel tree, which is packed into block, knows together；
Second storage unit is configured to update institute according to the Merkel tree of the latest edition or updated global index's table
State the Merkel tree of each block.
11. a kind of equipment, which is characterized in that the equipment includes:
One or more processors；
Memory, for storing one or more programs,
When one or more of programs are executed by one or more of processors, so that one or more of processors
Execute method according to any one of claims 1 to 5.
12. a kind of storage medium for being stored with computer program, which is characterized in that realize when the program is executed by processor as weighed
Benefit requires method described in any one of 1-5.
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| CN201810884295.1A CN109408551B (en) | 2018-08-06 | 2018-08-06 | Data query method and system, consensus method and system, device and storage medium |
| PCT/CN2019/099336 WO2020029931A1 (en) | 2018-08-06 | 2019-08-06 | Data query method and system, consensus method and system, device and storage medium |
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| CN201810884295.1A CN109408551B (en) | 2018-08-06 | 2018-08-06 | Data query method and system, consensus method and system, device and storage medium |
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