CN111078711A - Block chain data storage and acquisition method and device based on data index - Google Patents
Block chain data storage and acquisition method and device based on data index Download PDFInfo
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- CN111078711A CN111078711A CN201911407240.2A CN201911407240A CN111078711A CN 111078711 A CN111078711 A CN 111078711A CN 201911407240 A CN201911407240 A CN 201911407240A CN 111078711 A CN111078711 A CN 111078711A
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2228—Indexing structures
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- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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Abstract
The embodiment of the invention provides a method and a device for storing and acquiring block chain data based on data indexes. The method comprises the following steps: determining a data identifier and a block height identifier of received target service data to be stored, wherein the block height identifier is used for indicating the position of the block in the block chain; establishing a data index in a local database based on the data identifier and the block height identifier; and recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database. Therefore, the data volume needing to be traversed when the data is queried can be reduced, and the query efficiency is improved.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a device for storing and acquiring block chain data based on data indexes.
Background
The block chain technology, also called as distributed book technology, is an internet database technology, and is characterized in that centralization and openness are realized, and everyone can participate in database recording.
If we assume the database as a book, the reading and writing of the database can be regarded as an accounting behavior, the principle of the block chain technology is to find the person with the fastest accounting speed in a period of time, the person accounts, and then the page of information of the book is sent to other owners in the whole system. This is equivalent to changing all records in the database and sending to every other node in the whole network, so the block chain technique is also called distributed ledger (distributed ledger).
When a user acquires data information at any node in a block chain, if all nodes are not traversed, the acquired data may be tampered. This results in a waste of computer resources if all nodes are traversed. Therefore, how to improve the efficiency of data query in the blockchain becomes the focus of attention.
Disclosure of Invention
Based on the above problems, embodiments of the present invention provide a method and an apparatus for storing and acquiring block chain data based on data indexes.
In a first aspect, a method for storing blockchain data based on data indexing is provided. Applied to a blockchain node, the method comprising: determining a data identifier and a block height identifier of received target service data to be stored, wherein the block height identifier is used for indicating the position of the block in the block chain; establishing a data index in a local database based on the data identifier and the block height identifier; and recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
In one possible implementation, the block height indicator is used to indicate a range of block heights, the block height being a distance of the block from a created block.
In one possible implementation, the distance is a time interval or a number of blocks of an interval.
In one possible implementation, the step of determining the block height identifier of the received target service data to be stored includes: determining a timestamp of the received target service data to be stored; determining the block height identification based on the timestamp.
In a second aspect, a method for acquiring block chain data based on data index is provided. Applied to a blockchain node, the method comprising: receiving an acquisition request, wherein the acquisition request comprises a data identifier, and the acquisition request is used for requesting target service data corresponding to the data identifier; determining a block height identifier based on a data index corresponding to the data identifier in a local database, wherein the data index is used for recording the corresponding relation between the data identifier and the block height identifier, and the block height identifier is used for indicating the position of the block in the block chain; and acquiring the target service data from the block corresponding to the block height identifier in the block chain.
In a third aspect, a data-index-based blockchain data storage device is provided. Applied to a blockchain node, the apparatus comprising: a determining unit, configured to determine a data identifier and a block height identifier of received target service data to be stored, where the block height identifier is used to indicate a position of the block in the block chain; the establishing unit is used for establishing a data index in a local database based on the data identifier and the block height identifier; and the recording unit is used for recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
In a fourth aspect, an apparatus for acquiring block chain data based on data index is provided. Applied to a blockchain node, comprising: a receiving unit, configured to receive an acquisition request, where the acquisition request includes a data identifier, and the acquisition request is used to request target service data corresponding to the data identifier; a determining unit, configured to determine a block height identifier based on a data index corresponding to the data identifier in a local database, where the data index is used to record a corresponding relationship between the data identifier and the block height identifier, and the block height identifier is used to indicate a position of the block in the block chain; and the obtaining unit is used for obtaining the target service data in the block corresponding to the block height identifier in the block chain.
In a fifth aspect, embodiments of the present specification provide a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method steps of the first aspect when executing the program.
In a sixth aspect, embodiments of the present specification provide a blockchain network comprising a plurality of blockchain nodes and a plurality of user equipments, wherein the blockchain nodes are configured to implement the method steps of the first aspect.
In a seventh aspect, a computer-readable storage medium is provided, having stored thereon a computer program which, when being executed by a processor, carries out the method steps of the first aspect described above.
In an eighth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method steps of the first aspect described above.
The embodiment of the invention provides a method and a device for storing and acquiring block chain data based on data indexes. Determining a data identifier and a block height identifier of received target service data to be stored, wherein the block height identifier is used for indicating the position of the block in the block chain; establishing a data index in a local database based on the data identifier and the block height identifier; and recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database. Therefore, the data volume needing to be traversed when the data is queried can be reduced, and the query efficiency is improved.
Drawings
FIG. 1 illustrates an exemplary architecture for applying embodiments provided herein;
fig. 2 is a flowchart of a method for storing blockchain data based on data indexing according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for obtaining block chain data based on data indexing according to an embodiment of the present invention;
FIG. 4 is a block chain data storage device based on data indexing according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a block chain data acquisition apparatus based on data indexes according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a computer device provided in an embodiment of the present specification;
fig. 7 shows a schematic structural diagram of a computer device provided in an embodiment of the present specification.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a method and a device for storing and acquiring block chain data based on data indexes. Fig. 1 shows an exemplary architecture to which embodiments provided herein apply.
As shown in fig. 1, the exemplary architecture may include one or more user equipments 101 and one or more blockchain nodes 102, and when there are a plurality of blockchain nodes 102 and user equipments 101, a blockchain network is formed, where the blockchain nodes in the blockchain network may include storage nodes and out-blocking nodes. User equipment 101 may be configured to interact with a blockchain node 102, for example, user equipment 101 sends service data to the blockchain node; the block chain link point stores the service data in a block chain; user equipment 101 may also send a query request to the block chaining point, requesting data in the block chain.
It should be noted that the architecture of this embodiment is not limited to implement other functions, for example, the user equipment 101 may also be used as a block link node.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.
Fig. 2 is a schematic flow chart of a method for storing block chain data based on data indexing according to the present invention. As shown in fig. 2, when applied to a block chain node (e.g., block chain node 102 shown in fig. 1), the method may specifically include the following steps:
s210, determining a data identifier and a block height identifier of the received target service data to be stored, wherein the block height identifier is used for indicating the position of a block in a block chain.
The data identifier may be a hash value of the data or the like that can identify the data and is recorded in the user equipment. The user may trigger a request for storing the target service data through the user equipment, where the request for storing the target service data may include the target service data and an identifier of the target service data. The data identifier of the target service data can be directly obtained from the request for storing the target service data.
The tile height identification may include a variety of implementations, for example, may be used to indicate a range of tile heights, which is the distance of a tile from a created tile. For example, the height of a created block may be noted as 0, and then no new block is added, and a height is added in response.
The distance may be a time interval or a number of blocks of an interval, etc. Wherein the time interval can be estimated according to the time stamp or according to the block-out time.
S220, establishing a data index in a local database based on the data identifier and the block height identifier.
The local database may be used to store a data identifier and a block height identifier corresponding to the service data recorded in the block chain. The block link point may update the local database each time new traffic data is received.
S230, recording the target service data in the block corresponding to the block height identifier, so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
After the local database is updated, the target service data may be recorded in the blockchain. Since the block chain has a certain rule for recording the service data, the height of the block in which the target service data is recorded can be calculated in advance according to the recording rule.
In this way, when the target service data is obtained, the target service data can be obtained in the block at the specified height directly according to the index in the database. Therefore, the data volume needing to be traversed when the data is queried can be reduced, and the query efficiency is improved.
In some embodiments, the step of determining the block height identifier of the received target service data to be stored in step S210 may specifically include the following steps:
step 1.1), determining a timestamp of received target service data to be stored;
step 1.2), determining a block height identification based on the time stamp.
In this case, the height range of the block in which the target service data is to be recorded can be estimated according to the timestamp, and the height range can be used as the block height identifier corresponding to the target service data.
The timestamp of the target service data may be generated for the user equipment.
Fig. 3 is a flowchart illustrating a method for obtaining block chain data based on data indexing according to the present invention. As shown in fig. 3, when applied to a block chain node (e.g., block chain node 102 shown in fig. 1), the method may specifically include the following steps:
s310, receiving an acquisition request, wherein the acquisition request comprises a data identifier, and the acquisition request is used for requesting target service data corresponding to the data identifier.
The acquisition request may be triggered by the user equipment for the user. For example, a user may trigger a query for data in a blockchain through a client in a user device. A plurality of data identifications, such as hash values of the data, storage addresses of the data, and accounts to which the data belong, may be recorded in the user equipment.
The user may select or enter a data identity in the user device to trigger the acquisition request.
S320, determining a block height identifier based on a data index corresponding to the data identifier in the local database, wherein the data index is used for recording the corresponding relation between the data identifier and the block height identifier, and the block height identifier is used for indicating the position of the block in the block chain;
in conjunction with the foregoing embodiment shown in fig. 2, the local database of the blockchain node may be used to store the data identifier and the block height identifier corresponding to the service data recorded in the blockchain. The block link point may update the local database each time new traffic data is received.
S330, acquiring target service data from the block corresponding to the block height identifier in the block chain.
The height identifier may correspond to a plurality of blocks, and the plurality of blocks may be traversed to obtain the target service data.
Fig. 4 is a schematic structural diagram of a data index-based block chain data storage device according to the present invention. As shown in fig. 4, when applied to a blockchain node (e.g., the blockchain node 102 shown in fig. 1), the apparatus may specifically include the following steps:
a determining unit 401, configured to determine a data identifier and a block height identifier of received target service data to be stored, where the block height identifier is used to indicate a location of a block in a block chain;
an establishing unit 402, configured to establish a data index in a local database based on the data identifier and the block height identifier;
a recording unit 403, configured to record the target service data in the block corresponding to the block height identifier, so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
In some embodiments, the block height identification is used to indicate a range of block heights, the block heights being the distance of the blocks to a founder block.
In some embodiments, the distance is a time interval or a number of blocks of an interval.
In some embodiments, the determining unit 401 is specifically configured to:
determining a timestamp of the received target service data to be stored;
determining the block height identification based on the timestamp.
It is understood that the data-index-based blockchain data storage device of the present embodiment corresponds to the method embodiment shown in fig. 2, and therefore, the above description about the method embodiment shown in fig. 2 is also applicable to the device of the present embodiment, and is not repeated herein.
Fig. 5 is a schematic structural diagram of a data index-based block chain data acquisition apparatus according to the present invention. As shown in fig. 5, when applied to a blockchain node (e.g., the blockchain node 102 shown in fig. 1), the apparatus may specifically include the following steps:
a receiving unit 501, configured to receive an acquisition request, where the acquisition request includes a data identifier, and the acquisition request is used to request target service data corresponding to the data identifier;
a determining unit 502, configured to determine a block height identifier based on a data index corresponding to the data identifier in a local database, where the data index is used to record a corresponding relationship between the data identifier and the block height identifier, and the block height identifier is used to indicate a position of the block in the block chain;
an obtaining unit 503, configured to obtain the target service data in the block corresponding to the block height identifier in the block chain.
It can be understood that the device for acquiring block chain data based on data index in this embodiment corresponds to the method embodiment shown in fig. 3, and therefore, the above description about the method embodiment shown in fig. 3 is also applicable to the device in this embodiment, and is not repeated herein.
Fig. 6 shows a schematic structural diagram of a computer device provided in an embodiment of the present specification, where the computer device may include: a processor 610, a memory 620, an input/output interface 630, a communication interface 640, and a bus 650. Wherein the processor 610, memory 620, input/output interface 630, and communication interface 640 are communicatively coupled to each other within the device via a bus 650. The processor 610 is configured to execute executable modules stored in the memory 620, such as computer programs corresponding to the method embodiments shown in fig. 2.
Fig. 7 is a schematic structural diagram of a computer device provided in an embodiment of the present specification, where the computer device may include: processor 710, memory 720, input/output interface 730, communication interface 740, and bus 750. Wherein processor 710, memory 720, input/output interface 730, and communication interface 740 are communicatively coupled to each other within the device via bus 750. Processor 710 is configured to execute executable modules stored in memory 720, such as computer programs corresponding to the method embodiments shown in fig. 3.
As for the above fig. 6 or fig. 7, the processor may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits, and is configured to execute the relevant programs to implement the technical solutions provided in the embodiments of the present disclosure.
The Memory may be implemented in the form of a ROM (Read Only Memory), a RAM (Random access Memory), a static storage device, a dynamic storage device, or the like. The memory may store an operating system and other application programs, and when the technical solution provided by the embodiments of the present specification is implemented by software or firmware, the relevant program codes are stored in the memory and called by the processor to be executed.
The input/output interface is used for connecting the input/output module to realize information input and output. The i/o module may be configured as a component in a device (not shown) or may be external to the device to provide a corresponding function. The input devices may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices may include a display, a speaker, a vibrator, an indicator light, etc.
The communication interface is used for connecting a communication module (not shown in the figure) to realize the communication interaction of the equipment and other equipment. The communication module can realize communication in a wired mode (such as USB, network cable and the like) and also can realize communication in a wireless mode (such as mobile network, WIFI, Bluetooth and the like).
A bus includes a path that transfers information between the various components of the device, such as the processor, memory, input/output interfaces, and communication interfaces.
It should be noted that although the above-described device shows only a processor, a memory, an input/output interface, a communication interface and a bus, in a specific implementation, the device may also include other components necessary for normal operation. In addition, those skilled in the art will appreciate that the above-described apparatus may also include only those components necessary to implement the embodiments of the present description, and not necessarily all of the components shown in the figures.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for storing data of a block chain based on data index is applied to a block chain node, and the method comprises the following steps:
determining a data identifier and a block height identifier of received target service data to be stored, wherein the block height identifier is used for indicating the position of the block in the block chain;
establishing a data index in a local database based on the data identifier and the block height identifier;
and recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
2. The method of claim 1, wherein the block height indicator indicates a range of block heights, and wherein the block heights are distances from the block to a created block.
3. The method of claim 2, wherein the distance is a time interval or a number of blocks of an interval.
4. The method of claim 1, wherein the step of determining the block height identifier of the received target service data to be stored comprises:
determining a timestamp of the received target service data to be stored;
determining the block height identification based on the timestamp.
5. A method for acquiring block chain data based on data index is applied to a block chain node, and comprises the following steps:
receiving an acquisition request, wherein the acquisition request comprises a data identifier, and the acquisition request is used for requesting target service data corresponding to the data identifier;
determining a block height identifier based on a data index corresponding to the data identifier in a local database, wherein the data index is used for recording the corresponding relation between the data identifier and the block height identifier, and the block height identifier is used for indicating the position of the block in the block chain;
and acquiring the target service data from the block corresponding to the block height identifier in the block chain.
6. A data-index-based blockchain data storage device, applied to blockchain nodes, the device comprising:
a determining unit, configured to determine a data identifier and a block height identifier of received target service data to be stored, where the block height identifier is used to indicate a position of the block in the block chain;
the establishing unit is used for establishing a data index in a local database based on the data identifier and the block height identifier;
and the recording unit is used for recording the target service data in the block corresponding to the block height identifier so as to obtain the target service data on the block corresponding to the block height identifier based on the local database.
7. A data index-based block chain data acquisition device is applied to a block chain node, and comprises:
a receiving unit, configured to receive an acquisition request, where the acquisition request includes a data identifier, and the acquisition request is used to request target service data corresponding to the data identifier;
a determining unit, configured to determine a block height identifier based on a data index corresponding to the data identifier in a local database, where the data index is used to record a corresponding relationship between the data identifier and the block height identifier, and the block height identifier is used to indicate a position of the block in the block chain;
and the obtaining unit is used for obtaining the target service data in the block corresponding to the block height identifier in the block chain.
8. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1 to 5 when executing the program.
9. A blockchain network comprising a plurality of blockchain nodes for implementing the method of any one of claims 1 to 5 and a plurality of user equipments.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the method of any of claims 1-5.
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| CN111813788A (en) * | 2020-05-20 | 2020-10-23 | 北京金山云网络技术有限公司 | Information query method and device and information synchronization method and device |
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| CN111813788A (en) * | 2020-05-20 | 2020-10-23 | 北京金山云网络技术有限公司 | Information query method and device and information synchronization method and device |
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Application publication date: 20200428 |