CN110933162B - Block chain virtual subnet subsection storage method - Google Patents
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Abstract
A method for sectionally storing a block chain virtual subnet stores data of the same block by dividing a certain number of nodes of the subnet, realizes block tamper resistance and block data redundancy, stores a specific block, reduces the pressure of a single-node storage block, greatly improves the single-node storage capacity, ensures various characteristics of the block chain, and provides a feasible storage solution for wide and large-scale application of the block chain.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a block chain virtual subnet segmented storage method.
Background
With the block chain technology being listed as a national strategy in China, the block chain is expected to be applied to various fields on a larger scale in the future, electronic payment is rapidly developed at present, under the support of various high-speed transmission technologies such as 5G and the like, the number of blocks generated in the block chain is increased, the speed is increased, block chain data needing to be stored by nodes is increased, and if in the existing block chain system bitcoin system, a newly added node needs to download a 180G transaction record, and common node equipment cannot realize long-term storage of the block chain data.
The second type is to store self or all transaction blocks through a single node, and the data storage space is reduced, and in the mode, if the node is off-line or has a problem, the block data stored by the node cannot be normally used and has a risk of being tampered.
Disclosure of Invention
In order to overcome the defects of the technology, the invention provides a block chain virtual subnet segmented storage method which greatly improves the single-node storage capacity by dividing subnets and storing specific blocks.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
a method for block chain virtual subnet segment storage is characterized by comprising the following steps:
a) calculating the maximum node number O of the subnet by a formula N/M = O, wherein N is the maximum node total number of the block chain system, M is the number of divided virtual subnets, the minimum node number in each subnet is K, when O is smaller than K, the subnet does not participate in block chain data storage, and when O is larger than K, the step b is executed;
b) when a new node joins the block chain system, a UDP data message is constructed from a first virtual subnet in the block chain system, the UDP data message designates a receiving party as the first virtual subnet and then broadcasts the UDP data message, the new node tries to join the first virtual subnet, and after all nodes in the first virtual subnet receive the message, block header information of the first virtual subnet is obtained;
c) if the number of the nodes in the first virtual subnet recorded in the block header information does not reach O, constructing a UDP response packet to confirm that the new node can be added into the first virtual subnet, updating the number of the nodes by +1 by each node in the first virtual subnet, and downloading transaction block chain data and subnet block chain data stored by the nodes in the first virtual subnet after the new node is successfully added into the first virtual subnet;
d) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, continuously constructing a UDP message by the new node and trying to add the next virtual subnet, broadcasting the UDP data message after the designated receiving party of the UDP data message is the next virtual subnet, and acquiring the block header information of the virtual subnet after all the nodes in the next virtual subnet receive the message;
e) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, when the number of the subnet found by analyzing the returned message is the same as the number of the subnet trying to be added, opening up a new subnet in the block chain system, wherein the subnet is M +1, constructing and creating a new virtual subnet broadcast UDP message, and broadcasting to inform all the nodes that an M +1 virtual subnet has been created, and each node records that the number of the current virtual subnet is M + 1;
f) each node of the block chain system generates transaction, and before each node strives for the packing record authority, each node of each virtual subnet which meets the storage requirement obtains a remainder through the sequence number of the current block and the number of the virtual subnet, wherein the remainder is the number of the virtual subnet with the block storage authority;
g) all nodes in the virtual subnet which acquire the storage authority pack the block and then store and record the block number, after the storage is finished, the subnet number and the block number are packaged into a UDP message and the whole network is broadcasted, each node in the block chain system acquires the block recording authority according to a block chain competition mechanism, when a certain node in the block chain system acquires the authority, a block head is added, the block head table head also comprises the subnet number and the block number of the current block chain table head which are correspondingly stored in the current front area block head, and after the storage is successful, the block chain table head is broadcasted, and all nodes in the block chain system are updated;
h) when a certain transaction needs to be checked, the block body request UDP message is packaged after the stored block storage information is acquired from the block head corresponding to the block chain of the node, the block body request UDP message indicates the subnet number and the block number stored in the block, the block body request UDP is broadcast to the whole network, after the relevant virtual subnet receives the request and passes the verification through the block chain verification technology, any node in the relevant virtual subnet inquires the stored block through the block number, acquires the block and packages the block into UDP response data, the UDP response data is sent to the requested node, and the transaction inquiry action can be completed after the requested node acquires the block data.
Further, in step b), after receiving the message, all nodes in the first virtual subnet verify the validity of the message by a block chain verification mechanism, and after the verification is passed, analyze and confirm whether the destination subnet of the message is consistent with the local subnet, if so, query the subnet block chain, and obtain the block header information of the first virtual subnet.
Further, the following steps are added after the step b): if the UDP data message sent by the new node does not receive any subnet feedback information within the specified time, the system determines that no subnet exists in the current block chain system, and executes the step c) after the system defaults to open up the first virtual subnet.
Further, after the new node receives the message allowed to join the subnet in step c), a successful message for joining the subnet is constructed, the successful message for joining the subnet records the information of the new node, the subnet information and the joining time, the successful message for the subnet is broadcasted to the first virtual subnet to be joined, each node in the first virtual subnet records the change event of the subnet after receiving the message, and the number of nodes in the subnet is accumulated.
Further, when a node in the block chain is offline, an offline UDP message is constructed and broadcasted to the virtual subnet where the node is located, and after receiving the offline message, other nodes in the virtual subnet record the network change and update the number of nodes.
The invention has the beneficial effects that: by dividing the virtual subnets, a certain number of nodes perform the same block data storage, so that block tamper resistance and block data redundancy are realized. Once block data tampering action exists, all nodes in the subnet can verify data, and when one or more nodes are off-line or have problems, other nodes can still provide anti-tampering function and block data query service. The block random network segmented storage is realized under the condition of ensuring the normal operation of the traditional block chain. The virtual subnet division is carried out according to the storage optimization and node number maximization principle, not only the divided subnets can store the block data to the maximum extent, but also the subnet nodes can be ensured to have a certain number, and multi-node consensus tamper resistance and block data redundancy are realized. And each subnet fairly stores the new blocks in sequence, and the nodes in the subnet verify whether the current subnet has the storage authority of the latest block data by calculation. If the subnet has the authority, all nodes in the subnet store the latest block. The storage competition of the nodes can be abstracted to the storage competition of the virtual subnet, and after the competition obtains the storage right, all nodes in the virtual subnet store the current block. The storage adopts a fair sequential storage mechanism to ensure the fairness of each subnet. And encapsulating the block data of the index specific subnet and the block and realizing the reading of the block data. And the block chain only broadcasts a block head, the block head is added with a subnet and a block number pointing to the block data, the subnet and the block number are stored in the block data, when the block data is read, a query message is constructed according to the subnet and the block number stored in each node, and the query message goes to the designated subnet to acquire the designated block data.
Detailed Description
The present invention is further explained below.
A method for block chain virtual subnet segment storage is characterized by comprising the following steps:
a) calculating the maximum node number O of the subnet by a formula N/M = O, wherein N is the maximum node total number of the block chain system, M is the number of divided virtual subnets, the minimum node number in each subnet is K, when O is smaller than K, the subnet does not participate in block chain data storage, and when O is larger than K, the step b is executed;
b) when a new node joins the block chain system, a UDP data message is constructed from a first virtual subnet in the block chain system, the UDP data message designates a receiving party as the first virtual subnet and then broadcasts the UDP data message, the new node tries to join the first virtual subnet, and after all nodes in the first virtual subnet receive the message, block header information of the first virtual subnet is obtained;
c) if the number of the nodes in the first virtual subnet recorded in the block header information does not reach O, constructing a UDP response packet to confirm that the new node can be added into the first virtual subnet, updating the number of the nodes by +1 by each node in the first virtual subnet, and downloading transaction block chain data and subnet block chain data stored by the nodes in the first virtual subnet after the new node is successfully added into the first virtual subnet;
d) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, continuously constructing a UDP message by the new node and trying to add the next virtual subnet, broadcasting the UDP data message after the designated receiving party of the UDP data message is the next virtual subnet, and acquiring the block header information of the virtual subnet after all the nodes in the next virtual subnet receive the message;
e) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, when the number of the subnet found by analyzing the returned message is the same as the number of the subnet trying to be added, opening up a new subnet in the block chain system, wherein the subnet is M +1, constructing and creating a new virtual subnet broadcast UDP message, and broadcasting to inform all the nodes that an M +1 virtual subnet has been created, and each node records that the number of the current virtual subnet is M + 1;
f) each node of the block chain system generates a transaction, and before each node strives for the packing record authority, each node of each virtual subnet which meets the storage requirement obtains a remainder through the sequence number of the current block and the number of the virtual subnet, wherein the remainder is the number of the virtual subnet with the block storage authority (assuming that the block number is 10, the number of the virtual subnets is 4, and the remainder is 2, the second virtual subnet stores the block);
g) all nodes in the virtual subnet which acquire the storage authority pack the block and then store and record the block number, after the storage is finished, the subnet number and the block number are packaged into a UDP message and the whole network is broadcasted, each node in the block chain system acquires the block recording authority according to a block chain competition mechanism, when a certain node in the block chain system acquires the authority, a block head is added, the block head table head also comprises the subnet number and the block number of the current block chain table head which are correspondingly stored in the current front area block head, and after the storage is successful, the block chain table head is broadcasted, and all nodes in the block chain system are updated;
h) when a certain transaction needs to be checked, the block body request UDP message is packaged after the stored block storage information is acquired from the block head corresponding to the block chain of the node, the block body request UDP message indicates the subnet number and the block number stored in the block, the block body request UDP is broadcast to the whole network, after the relevant virtual subnet receives the request and passes the verification through the block chain verification technology, any node in the relevant virtual subnet inquires the stored block through the block number, acquires the block and packages the block into UDP response data, the UDP response data is sent to the requested node, and the transaction inquiry action can be completed after the requested node acquires the block data.
By dividing the virtual subnets, a certain number of nodes perform the same block data storage, so that block tamper resistance and block data redundancy are realized. Once block data tampering action exists, all nodes in the subnet can verify data, and when one or more nodes are off-line or have problems, other nodes can still provide anti-tampering function and block data query service. The block random network segmented storage is realized under the condition of ensuring the normal operation of the traditional block chain. The virtual subnet division is carried out according to the storage optimization and node number maximization principle, not only the divided subnets can store the block data to the maximum extent, but also the subnet nodes can be ensured to have a certain number, and multi-node consensus tamper resistance and block data redundancy are realized. And each subnet fairly stores the new blocks in sequence, and the nodes in the subnet verify whether the current subnet has the storage authority of the latest block data by calculation. If the subnet has the authority, all nodes in the subnet store the latest block. The storage competition of the nodes can be abstracted to the storage competition of the virtual subnet, and after the competition obtains the storage right, all nodes in the virtual subnet store the current block. The storage adopts a fair sequential storage mechanism to ensure the fairness of each subnet. And encapsulating the block data of the index specific subnet and the block and realizing the reading of the block data. And the block chain only broadcasts a block head, the block head is added with a subnet and a block number pointing to the block data, the subnet and the block number are stored in the block data, when the block data is read, a query message is constructed according to the subnet and the block number stored in each node, and the query message goes to the designated subnet to acquire the designated block data.
By dividing the sub-network to store the specific block, the pressure of the single-node storage block is reduced, the single-node storage capacity is greatly improved, various characteristics of the block chain are ensured, and a feasible storage solution is provided for wide and large-scale application of the block chain.
Further, in step b), after receiving the message, all nodes in the first virtual subnet verify the validity of the message by a block chain verification mechanism, and after the verification is passed, analyze and confirm whether the destination subnet of the message is consistent with the local subnet, if so, query the subnet block chain, and obtain the block header information of the first virtual subnet.
Further, the following steps are added after the step b): if the UDP data message sent by the new node does not receive any subnet feedback information within the specified time, the system determines that no subnet exists in the current block chain system, and executes the step c) after the system defaults to open up the first virtual subnet.
Further, after the new node receives the message allowed to join the subnet in step c), a successful message for joining the subnet is constructed, the successful message for joining the subnet records the information of the new node, the subnet information and the joining time, the successful message for the subnet is broadcasted to the first virtual subnet to be joined, each node in the first virtual subnet records the change event of the subnet after receiving the message, and the number of nodes in the subnet is accumulated.
Further, when a node in the block chain is offline, an offline UDP message is constructed and broadcasted to the virtual subnet where the node is located, and after receiving the offline message, other nodes in the virtual subnet record the network change and update the number of nodes.
Claims (5)
1. A method for block chain virtual subnet segment storage is characterized by comprising the following steps:
a) calculating the maximum node number O of the subnet by a formula N/M = O, wherein N is the maximum node total number of the block chain system, M is the number of divided virtual subnets, the minimum node number in each subnet is K, when O is smaller than K, the subnet does not participate in block chain data storage, and when O is larger than K, the step b is executed;
b) when a new node joins the block chain system, a UDP data message is constructed from a first virtual subnet in the block chain system, the UDP data message designates a receiving party as the first virtual subnet and then broadcasts the UDP data message, the new node tries to join the first virtual subnet, and after all nodes in the first virtual subnet receive the message, block header information of the first virtual subnet is obtained;
c) if the number of the nodes in the first virtual subnet recorded in the block header information does not reach O, constructing a UDP response packet to confirm that the new node can be added into the first virtual subnet, updating the number of the nodes by +1 by each node in the first virtual subnet, and downloading transaction block chain data and subnet block chain data stored by the nodes in the first virtual subnet after the new node is successfully added into the first virtual subnet;
d) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, continuously constructing a UDP message by the new node and trying to add the next virtual subnet, broadcasting the UDP data message after the designated receiving party of the UDP data message is the next virtual subnet, and acquiring the block header information of the virtual subnet after all the nodes in the next virtual subnet receive the message;
e) if the number of the nodes in the subnet recorded in the block header information reaches O, constructing a UDP response packet to refuse the addition of a new node, when the number of the subnet found by analyzing the returned message is the same as the number of the subnet trying to be added, opening up a new subnet in the block chain system, wherein the subnet is M +1, constructing and creating a new virtual subnet broadcast UDP message, and broadcasting to inform all the nodes that an M +1 virtual subnet has been created, and each node records that the number of the current virtual subnet is M + 1;
f) each node of the block chain system generates transaction, and before each node strives for the packing record authority, each node of each virtual subnet which meets the storage requirement obtains a remainder through the sequence number of the current block and the number of the virtual subnet, wherein the remainder is the number of the virtual subnet with the block storage authority;
g) all nodes in a virtual subnet for obtaining storage authority pack the block and then store and record the block number, after the storage is finished, the subnet number and the block number are packaged into a UDP message and the whole network is broadcasted, each node in a block chain system obtains the block recording authority according to a block chain competition mechanism, when a certain node in the block chain system obtains the authority, a block head is added, the block head table head also comprises the subnet number and the block number of the current block chain table head corresponding to the current block chain table head and stored in the current front area block head, and after the storage is successful, the block chain table head is broadcasted, and all nodes in the block chain system are updated;
h) when a certain transaction needs to be checked, the block body request UDP message is packaged after the stored block storage information is acquired from the block head corresponding to the block chain of the node, the block body request UDP message indicates the subnet number and the block number stored in the block, the block body request UDP is broadcast to the whole network, after the relevant virtual subnet receives the request and passes the verification through the block chain verification technology, any node in the relevant virtual subnet inquires the stored block through the block number, acquires the block and packages the block into UDP response data, the UDP response data is sent to the requested node, and the transaction inquiry action can be completed after the requested node acquires the block data.
2. The method of blockchain virtual subnet fragment storage according to claim 1, wherein: and b), after all nodes in the first virtual subnet receive the message, verifying the message validity through a block chain verification mechanism, analyzing and confirming whether the destination subnet of the message is consistent with the subnet after the message is verified, and if so, inquiring a subnet block chain and acquiring block header information of the first virtual subnet.
3. A method of blockchain virtual subnet fragment storage according to claim 1, wherein the following steps are added after step b): if the UDP data packet sent by the new node does not receive any subnet feedback information within the specified time, it is determined that no subnet exists within the current blockchain system, and the system performs step c) after opening up the first virtual subnet by default.
4. The method according to claim 1, wherein in step c), after receiving the message that the subnet allows to join, the new node constructs a successful message for joining the subnet, and the successful message for joining the subnet records the information of the new node, the information of the subnet, and the joining time, and broadcasts the successful message for the first virtual subnet to be joined, and after receiving the message, each node in the first virtual subnet records the change event of the subnet and accumulates the number of nodes in the subnet.
5. The method of blockchain virtual subnet fragment storage according to claim 1, wherein: when the node in the block chain is off-line, an off-line UDP message is constructed and broadcasted to the virtual sub-network where the node is located, and after other nodes of the virtual sub-network receive the off-line message, the network change is recorded and the number of the nodes is updated.
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