WO2021027612A1

WO2021027612A1 - Method and apparatus for executing transaction in blockchain

Info

Publication number: WO2021027612A1
Application number: PCT/CN2020/106670
Authority: WO
Inventors: 石翔; 李辉忠; 张开翔; 范瑞彬
Original assignee: 深圳前海微众银行股份有限公司
Priority date: 2019-08-13
Filing date: 2020-08-03
Publication date: 2021-02-18
Also published as: CN110490742B; CN110490742A

Abstract

A method and apparatus for executing a transaction in a blockchain, wherein same are applied to the field of Fintech and are used for reducing the duration for completing a transaction. The method is applicable to a smart contract comprising a plurality of contract interfaces. The method comprises: for any one transaction from among N transactions to be processed, determining a contract interface, corresponding to the transaction, in a smart contract, and determining shared variables of the N transactions according to shared variable information of contract interfaces corresponding to the N transactions and variable information of the N transactions; determining, according to the shared variables of the N transactions, at least two first transactions that correspond to different contract interfaces and do not have the same shared variable; and executing the at least two first transactions in parallel. According to the method, N transactions can be executed in parallel on the basis of normal execution of transactions, thereby facilitating a reduction in the duration for completing the N transactions.

Description

Method and device for executing transaction in blockchain

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 13, 2019, the application number is 201910744161.4, and the application name is "a method and device for transaction execution in a blockchain", the entire content of which is by reference Incorporated in this application.

Technical field

This application relates to the field of Fintech and Blockchain, and in particular to a method and device for executing transactions in a blockchain.

Background technique

With the development of computer technology, more and more technologies (such as big data, distributed, Blockchain, artificial intelligence, etc.) are applied in the financial field, and the traditional financial industry is gradually transforming to Fintech. At present, because the blockchain is immutable, transactions are often carried out through the blockchain in the field of financial technology.

In the prior art, transactions are usually executed in a serial or parallel manner. However, with the continuous increase in transaction volume, serial execution of transactions will result in a large number of transactions in a long-term queue, resulting in a longer time for transaction completion. Parallel execution of transactions may cause transaction errors due to conflicts in shared variables between transactions and transactions. In this case, retrying or troubleshooting errors will increase the time to complete the transaction. Obviously, the performance of current blockchain nodes is increasingly unable to support the huge transaction volume. Based on this, how to reduce the time to complete transactions in the blockchain is an urgent problem to be solved.

Summary of the invention

This application provides a transaction execution method and device in a blockchain to solve the problem of long transaction completion time in a blockchain in the prior art.

In the first aspect, this application provides a transaction execution method in the blockchain, which is suitable for smart contracts that include multiple contract interfaces. The method includes: for any one of the N transactions to be processed, first determining the contract interface corresponding to the transaction in the smart contract, and then according to the shared variable information of the contract interface and the variables of the transaction Information, determine the shared variables of the transaction, and then determine at least two first transactions executed in parallel according to the shared variables of the N transactions, so as to execute the at least two first transactions in parallel. Wherein, N is an integer greater than 1, the shared variable information is used to record the shared variable of the contract interface, the shared variable is a variable possessed by at least two contract interfaces, and the at least two first transactions correspond to different And the at least two first transactions do not have the same shared variable.

Through the above method, the contract interface corresponding to each of the N transactions to be processed in the smart contract can be determined, and the shared variable of each contract interface recorded in the shared variable information of the N transactions can be determined At least two transactions executed in parallel. Since at least two transactions executed in parallel correspond to different contract interfaces, and at least two transactions do not have the same shared variable, when at least two transactions are executed in parallel, the existence of the same shared variable will not cause transaction execution conflicts. It can be seen that this method can execute transactions in parallel on the basis of ensuring the normal execution of transactions, thereby helping to reduce the completion time of N transactions.

In an optional implementation manner, after determining the contract interface corresponding to the transaction in the smart contract, before determining the shared variable of the transaction, it may also be based on the contract address of the smart contract and the transaction in the The corresponding contract interface in the smart contract determines the shared variable information corresponding to the transaction from the shared variable contract. Wherein, the shared variable contract is a contract that records the contract address, contract interface, and contract interface corresponding to shared variable information of the smart contract.

In the above method, a shared variable contract that records the smart contract's contract address, contract interface, and contract interface corresponding to shared variable information is formed in advance, so that subsequent use can be directly based on the contract address and transaction of a smart contract in the smart contract The corresponding contract interface determines the shared variable information corresponding to the transaction from the shared variable contract to improve the reliability of the shared variable information corresponding to the determined transaction.

In an alternative embodiment, the second transaction in the serial transaction combination is executed first, and then after the second transaction is executed serially, if the shared variable of the transaction that has not been executed in the serial transaction combination is determined, If there are at least two third transactions executed in parallel, the at least two third transactions are executed in parallel. Wherein, the second transaction is any transaction in a serial transaction combination, and the serial transaction combination is a transaction other than a transaction executed in parallel among the N transactions, and the at least two third transactions correspond to different And the at least two third transactions do not have the same shared variable.

In the above method, the second transaction in the serial transaction combination is executed serially, so that one or more transactions in the serial transaction combination can be executed in parallel only with transactions that share variables with the second transaction. For the shared variables of the transactions that have not been executed in the serial transaction combination, if it is determined that there are at least two third transactions executed in parallel, the at least two third transactions are executed in parallel. After the second transaction is executed serially, the transactions that share variables with the second transaction in the serial transaction combination are executed in parallel, which can further increase the transactions that can be executed in parallel and reduce the completion time of the transaction.

In an optional implementation manner, the second transaction is the transaction with the largest number of public transactions in the serial transaction combination. Wherein, the public transaction is a transaction that shares variables with the transaction among all transactions except the transaction in the serial transaction combination.

In the above method, by executing the second transaction with the largest number of public transactions in the serial transaction combination, after the execution of the second transaction, the remaining transactions in the serial transaction combination can be released to the maximum extent that share variables with the second transaction Transactions, thereby maximizing the number of at least two third transactions that can continue to be executed in parallel.

In the second aspect, this application provides a transaction execution device in the blockchain, which is suitable for smart contracts that include multiple contract interfaces. The device includes:

The determining module is used for determining the contract interface corresponding to the transaction in the smart contract for any one of the N transactions to be processed, and then according to the shared variable information of the contract interface and the variables of the transaction Information to determine the shared variables of the transaction;

The processing module is configured to determine at least two first transactions executed in parallel according to the shared variables of the N transactions, and then execute the at least two first transactions in parallel.

Wherein, N is an integer greater than 1, the shared variable information is used to record the shared variable of the contract interface, the shared variable is a variable possessed by at least two contract interfaces, and the at least two first transactions correspond to different And the at least two first transactions do not have the same shared variable.

In an optional implementation manner, the determining module is further configured to: determine the transaction corresponding to the transaction from the shared variable contract according to the contract address of the smart contract and the contract interface corresponding to the transaction in the smart contract Shared variable information. Wherein, the shared variable contract is a contract that records the contract address, contract interface, and contract interface corresponding to shared variable information of the smart contract.

In an optional implementation manner, the processing module is further configured to: serially execute the second transaction in the serial transaction combination, after the serial execution is completed, if the transaction is not executed according to the transaction in the serial transaction combination Shared variable, it is determined that there are at least two third transactions executed in parallel, then the at least two third transactions are executed in parallel. Wherein, the second transaction is any transaction in a serial transaction combination, and the serial transaction combination is a transaction other than a transaction executed in parallel among the N transactions, and the at least two third transactions correspond to different And the at least two third transactions do not have the same shared variable.

For the beneficial effects of the above-mentioned second aspect and the implementation manners of the second aspect, reference may be made to the beneficial effects of the above-mentioned first aspect and the implementation manners of the first aspect, which will not be repeated here.

In a third aspect, the present application provides a computer device including a program or instruction, and when the program or instruction is executed, it is used to execute the method described in the first aspect and any one of the first aspect.

In a fourth aspect, the present application provides a storage medium including a program or instruction, when the program or instruction is executed, the method described in the first aspect and any one of the first aspect is executed.

Description of the drawings

Figure 1 is a schematic diagram of the block chain;

FIG. 2 is a schematic diagram of the process flow of a method for executing transactions in a blockchain according to an embodiment of the application;

FIG. 3 is a schematic diagram of a step flow diagram of deploying a shared variable contract on a blockchain according to an embodiment of the application;

FIG. 4 is a schematic diagram of a step flow diagram of extracting shared variables of transactions on the blockchain according to an embodiment of the application;

FIG. 5 is a schematic structural diagram of a transaction execution device in a blockchain provided by an embodiment of the application.

detailed description

In order to better understand the above technical solutions, the above technical solutions will be described in detail below with reference to the drawings and specific implementations of the specification. It should be understood that the embodiments of the application and the specific features in the embodiments are detailed to the technical solutions of the application. Note, rather than limiting the technical solution of the present application, the embodiments of the present application and the technical features in the embodiments can be combined with each other if there is no conflict.

The following first explains the terms appearing in the embodiments of this application.

Blockchain: As shown in Figure 1, a blockchain is a chain composed of a series of blocks. In addition to recording the data of this block, each block will also record the hash value of the previous block. Through this Way to form a chain. There are two core concepts of the blockchain, one is cryptography and the other is decentralization. Based on these two concepts, historical information on the blockchain cannot be tampered with.

Node: Each participant in the network is a node, and the node participates in network formation and data exchange. In the blockchain network, a node refers to a participant with a unique identity. The node has a complete copy of the ledger and has the ability to participate in the consensus and maintenance of the blockchain network.

Smart contract: A smart contract is a computer protocol designed to spread, verify, or execute a contract in an information-based way. Smart contracts allow trusted transactions without a third party, which are traceable and irreversible. The specific form of the smart contract is the code deployed on the blockchain to complete a specific function. For example, Solidity is a mainstream smart contract programming language. Smart contracts written in Solidity language are called Solidity contracts. When a smart contract is deployed on the blockchain, a contract address will be generated, and users can call this smart contract through the contract address. The function defined in the smart contract is called the contract interface. The call to the smart contract is to call a contract interface in the contract through the contract address.

Transaction: A transaction is a user's request for an operation of the smart contract interface deployed on the blockchain. The transaction is initiated by the user and sent from the user's client to the blockchain node. After the blockchain node receives the transaction, it calls the corresponding smart contract according to the contract address and interface specified by the transaction.

Shared variables: The interface (function) of the smart contract operates on some global variables, and these global variables may be manipulated by the interface of another contract. The global variables manipulated in the interface of the smart contract are called shared variables. A transaction calls an interface of a smart contract, which involves the operation of some shared variables. These shared variables are called the shared variables of this transaction.

Based on the immutability of the blockchain, financial institutions (such as banking institutions, insurance institutions, or securities institutions) often conduct transactions through the blockchain during the operation of their businesses (such as bank loan business, deposit business, etc.). Serial execution of transactions and parallel execution of transactions are two commonly used methods of transaction execution. However, with the continuous increase in transaction volume, serial execution of transactions may cause a large number of transactions to be queued for a long time, and parallel execution of transactions may cause transaction errors due to conflicts in shared variables between transactions and transactions. Retry or retry of wrong transactions The investigation will increase the time to complete the transaction. It can be seen that the current performance of blockchain nodes is increasingly unable to support a huge transaction volume. This situation obviously does not meet the needs of banks and other financial institutions, and cannot guarantee the efficient operation of various businesses of financial institutions.

To this end, an embodiment of the present application proposes a transaction execution method in the blockchain, which is suitable for smart contracts including multiple contract interfaces, and a schematic diagram of the specific steps of the method is shown in FIG. 2.

Step 201: For any one of the N transactions to be processed, determine the contract interface corresponding to the transaction in the smart contract, and determine the contract interface based on the shared variable information of the contract interface and the variable information of the transaction. The shared variables of the transaction.

In the embodiment of the present application, N is an integer greater than 1, the shared variable information is used to record the shared variable of the contract interface, and the shared variable is a variable possessed by at least two contract interfaces.

Step 202: Determine at least two first transactions to be executed in parallel according to the shared variables of the N transactions.

In the embodiment of the present application, the at least two first transactions correspond to different contract interfaces, and the at least two first transactions do not have the same shared variable.

Step 203: execute the at least two first transactions in parallel.

In the above step 201, for any one of the N transactions to be processed, before the block chain receives the transaction, the target transaction has been marked with the contract address of the smart contract and the corresponding target contract interface in the smart contract .

The following describes the shared variable information in detail.

"Shared variable information" is the concept proposed in this application. Shared variable information is a reference for extracting shared variables in transactions. Before a transaction is executed, shared variables can be extracted according to the corresponding shared variable information. In this application, the shared variable information can have a one-to-one correspondence with the contract interface of the smart contract, and one contract interface has a corresponding shared variable information. It should be pointed out that this application only explains how the shared variable information is stored on the blockchain and at which stage it is used. However, the specific form of shared variable information (for example, a table or an array) and the method of extracting shared variables in transactions based on shared variable information are not limited. As long as the shared variable information and the transaction can be correctly matched, and the shared variable can be extracted, the method described in this application can be used. In this application, the contract developer can define shared variable information for the interface when developing each contract interface.

Shared variable information can also be stored on the blockchain in the form of a contract. When the contract is deployed, the shared variable information will be recorded on the blockchain at the same time. Before the transaction is executed, the blockchain node will query the shared variable information of the contract interface according to the contract interface called by the transaction, and then extract the shared variable from the transaction based on the shared variable information.

Therefore, in an optional implementation manner of step 201 above, after determining the contract interface corresponding to the transaction in the smart contract, and before determining the shared variable of the transaction, the transaction corresponding to the share can be determined in the following manner Variable information:

According to the contract address of the smart contract and the contract interface corresponding to the transaction in the smart contract, the shared variable information corresponding to the transaction is determined from the shared variable contract. Wherein, the shared variable contract is a contract that records the contract address, contract interface, and contract interface corresponding to shared variable information of the smart contract.

In this application, a shared variable contract is built in the nodes of the blockchain to record the shared variable information corresponding to each contract interface. Among them, the shared variable information corresponding to each contract interface can be defined for each contract interface when the contract developer develops the contract interface. When the smart contract is deployed on the blockchain, the blockchain will call the shared variable contract and record the shared variable information on the blockchain. In the shared variable contract, the contract interface corresponds to the shared variable information one to one.

The shared variable template contract is also a smart contract, and its operation will also be agreed on by the blockchain. That is to say, the operation of the shared variable template contract when deploying the contract will also be agreed by all nodes in the blockchain, recorded on the blockchain, and visible to all nodes. Therefore, when a smart contract is deployed, the shared variable information corresponding to its contract interface will also be agreed upon, recorded on the blockchain, and visible to all nodes. In this way, the shared variable information is equivalent to being deployed on the blockchain.

The following describes in detail the step flow of a method for deploying a shared variable contract on a blockchain provided by an embodiment of the present application with reference to FIG. 3.

Step 301: The contract developer writes a smart contract.

Step 302: The contract developer writes shared variable information corresponding to the contract interface.

In an optional implementation manner, step 302 may be executed in parallel while step 301 is executed, that is, while writing the contract interface of the smart contract, the shared variable information corresponding to the contract interface is written.

It should be noted that, since the shared variable information cannot be tampered with after each node of the blockchain reaches a consensus, the shared variable information in step 302 must be correct, so as to provide a reference for the extraction of shared variables in the future.

Step 303: The node performs the operation of deploying the smart contract and calls the shared variable contract.

Step 304: Use the contract address of the smart contract, the contract interface, and the shared variable information corresponding to the contract interface as parameters, and pass them into the interface of the shared variable contract.

Step 305: The blockchain reaches a consensus and the smart contract is successfully deployed. At the same time, the shared variable contract was successfully deployed and visible to all nodes.

FIG. 4 exemplarily shows a schematic diagram of a step flow diagram of extracting shared variables of a transaction on a blockchain provided by an embodiment of the present application. As shown in FIG. 4, the method includes:

Step 401: The user of the smart contract sends a transaction and calls the contract interface of the smart contract.

Step 402: After receiving the transaction, the node takes out the contract address and the called contract interface from the transaction.

Step 403: The node queries the shared variable information of the transaction from the shared variable contract according to the contract address and the contract interface.

Step 404: The node extracts the shared variable of the transaction from the transaction according to the shared variable information.

The following takes a specific example to illustrate the implementation process of step 201 to step 202.

In this example, the N transactions to be processed are:

Transaction 1, corresponding to contract interface 1, the variables are a, b, d, f, l, x;

Transaction 2, corresponding to contract interface 2, variables are c, e, k, y;

Transaction 3, corresponding to contract interface 3, the variables are a, b, c, j, z;

Transaction 4, corresponding to contract interface 4, the variables are b, k, q;

Transaction 5, corresponding to contract interface 5, with variables c, l, p;

Transaction 6, corresponding to contract interface 6, variables are p, q.

It should be noted that the contract interface has many input parameters, some are required parameters, and some are optional parameters. Therefore, the parameters entered in transaction 1 are not necessarily all the input parameters of the contract interface.

Assume that the shared variable information corresponding to each contract interface in this example is:

Shared variable information 1: a, b, d, f, l, m corresponding to contract interface 1;

Shared variable information 2 corresponding to contract interface 2: c, e, k, n;

Shared variable information 3 corresponding to contract interface 3: a, b, c, j, u;

Shared variable information corresponding to contract interface 4: b, k, o;

Shared variable information 5 corresponding to contract interface 5: c, l, w;

Shared variable information 6 corresponding to contract interface 6: p, q, r.

Therefore, it can be seen that the shared variable 1 of transaction 1 is the variable recorded in the shared variable information 1 of the variables of transaction 1, namely a, b, d, f, l. Correspondingly, the shared variable 2 of transaction 2 is the variable recorded in the shared variable information 2 of the variables of transaction 2, namely c, e, and k. The shared variable 3 of transaction 3 is the variables recorded in the shared variable information 3 of the variables of transaction 3, namely a, b, c, j. The shared variable 4 of transaction 4 is the variable recorded in the shared variable information 4 among the variables of transaction 4, namely b, k. The shared variable 5 of transaction 5 is the variable recorded in the shared variable information 5 of the variable of transaction 5, namely c, l. The shared variable 6 of transaction 6 is the variable recorded in the shared variable information 6 of the variable of transaction 6, that is, p, q.

In this example, the at least two first transactions that can be executed in parallel may be transaction 1, transaction 2, and transaction 6.

In the embodiment of the present application, an optional implementation manner of step 201 to step 203 is as follows:

The second transaction in the serial transaction combination is executed first. After the second transaction is executed serially, if it is determined that there are at least two transactions executed in parallel according to the shared variable of the transaction that has not been executed in the serial transaction combination. Third transactions, then the at least two third transactions are executed in parallel. Wherein, the serial transaction combination is a transaction other than the transaction executed in parallel among the N transactions, the second transaction is any transaction in the serial transaction combination, and the at least two third transactions correspond to different And the at least two third transactions do not have the same shared variable.

For example, if the second transaction is transaction 3, there are at least two third transactions executed in parallel, including transaction 4 and transaction 5. If the second transaction is transaction 4, there are no at least two third transactions executed in parallel.

It should be noted that the embodiment of the present application may also select the second transaction according to a predetermined rule. For example, the second transaction may be the transaction with the largest number of public transactions in the serial transaction combination. Wherein, a public transaction is a transaction that has a shared variable with the transaction among all transactions except the transaction in the serial transaction combination. In the above example, the number of public transactions in transaction 3 is 2, the number of public transactions in transaction 4 is 1, and the number of public transactions in transaction 5 is 1, so the second transaction can be transaction 3. In addition, if there is only one transaction in the serial transaction combination, the transaction can be directly executed serially.

FIG. 5 is a schematic structural diagram of a transaction execution device in a blockchain provided by an embodiment of the application, and the device is suitable for a smart contract including multiple contract interfaces. As shown in Figure 5, the device includes:

The determining module 501 is configured to determine the contract interface corresponding to the transaction in the smart contract for any one of the N transactions to be processed, according to the shared variable information of the contract interface and the variable information of the transaction , Determine the shared variable of the transaction; where N is an integer greater than 1, and the shared variable information is used to record the shared variable of the contract interface; the shared variable is a variable that both at least two contract interfaces have;

The processing module 502 is configured to determine at least two first transactions to be executed in parallel according to the shared variables of the N transactions, and to execute the at least two first transactions in parallel; wherein the at least two first transactions correspond to different And the at least two first transactions do not have the same shared variable.

In an optional implementation manner, the determining module 501 is further configured to:

In an optional implementation manner, the processing module 502 is further configured to:

The second transaction in the serial transaction combination is executed serially, and after the second transaction is executed serially, if it is determined that there are at least two third transactions executed in parallel according to the shared variable of the transaction that has not been executed in the serial transaction combination Transaction, the at least two third transactions are executed in parallel. Wherein, the serial transaction combination is a transaction other than the transaction executed in parallel among the N transactions, the second transaction is any transaction in the serial transaction combination, and the at least two third transactions correspond to different And the at least two third transactions do not have the same shared variable.

In an optional implementation manner, the second transaction is the transaction with the largest number of public transactions in the serial transaction combination. Wherein, a public transaction is a transaction that has a shared variable with the transaction among all transactions except the transaction in the serial transaction combination.

An embodiment of the present application also provides a computer device, including a program or instruction, when the program or instruction is executed, it is used to execute the transaction execution method in any block chain described in FIGS. 2 to 4.

An embodiment of the present application also provides a storage medium including a program or instruction, when the program or instruction is executed, it is used to execute the transaction execution method in any block chain described in FIGS. 2 to 4.

Finally, it should be noted that those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A transaction execution method in a blockchain, characterized in that it is suitable for a smart contract including multiple contract interfaces; the method includes:

For any one of the N transactions to be processed, determine the contract interface corresponding to the transaction in the smart contract; determine the transaction according to the shared variable information of the contract interface and the variable information of the transaction The shared variable information; the shared variable information is used to record the shared variable of the contract interface; the shared variable is a variable that has at least two contract interfaces; N is an integer greater than 1;

According to the shared variables of the N transactions, determine at least two first transactions to be executed in parallel; the at least two first transactions correspond to different contract interfaces, and the at least two first transactions do not have the same shared variable ；

The at least two first transactions are executed in parallel.
The method according to claim 1, wherein after determining the contract interface corresponding to the transaction in the smart contract and before determining the shared variable of the transaction, the method further comprises:

According to the contract address of the smart contract and the contract interface corresponding to the transaction in the smart contract, determine the shared variable information corresponding to the transaction from the shared variable contract; the shared variable contract records the contract address of the smart contract , Contract interface and contract interface correspond to contracts that share variable information.
The method of claim 1 or 2, further comprising:

The second transaction is executed serially; the second transaction is any transaction in a serial transaction combination; the serial transaction combination is a transaction other than the transactions executed in parallel among the N transactions;

After the second transaction is executed serially, if it is determined that there are at least two third transactions executed in parallel according to the shared variables of the transactions that have not been executed in the serial transaction combination, then the at least two third transactions are executed in parallel ; The at least two third transactions correspond to different contract interfaces, and the at least two third transactions do not have the same shared variable.
The method of claim 3, wherein the second transaction is the transaction with the largest number of public transactions in the serial transaction combination; wherein the public transaction is the serial transaction combination except the In all transactions other than the transaction, there is a transaction that shares variables with the transaction.
A transaction execution device in a blockchain, which is characterized in that it is suitable for smart contracts including multiple contract interfaces; the device includes:

The determining module is used to determine the contract interface corresponding to the transaction in the smart contract for any one of the N transactions to be processed; according to the shared variable information of the contract interface and the variable information of the transaction , Determine the shared variable of the transaction; the shared variable information is used to record the shared variable of the contract interface; the shared variable is a variable possessed by at least two contract interfaces; N is an integer greater than 1;

The processing module is configured to determine at least two first transactions to be executed in parallel according to the shared variables of the N transactions, and to execute the at least two first transactions in parallel; the at least two first transactions correspond to different contract interfaces , And the at least two first transactions do not have the same shared variable.
The device according to claim 5, wherein the determining module is further configured to:

According to the contract address of the smart contract and the contract interface corresponding to the transaction in the smart contract, determine the shared variable information corresponding to the transaction from the shared variable contract; the shared variable contract records the contract address of the smart contract , Contract interface and contract interface correspond to contracts that share variable information.
The device according to claim 5 or 6, wherein the processing module is further configured to:

The second transaction is executed serially; the second transaction is any transaction in a serial transaction combination; the serial transaction combination is a transaction other than the transactions executed in parallel among the N transactions;

After the second transaction is executed serially, if it is determined that there are at least two third transactions executed in parallel according to the shared variables of the transactions that have not been executed in the serial transaction combination, then the at least two third transactions are executed in parallel ; The at least two third transactions correspond to different contract interfaces, and the at least two third transactions do not have the same shared variable.
The device of claim 7, wherein the second transaction is the transaction with the largest number of public transactions in the serial transaction combination; wherein the public transaction is the transaction except the transaction in the serial transaction combination Among all transactions in, there are transactions that share variables with this transaction.
A computer device characterized by comprising a program or instruction, and when the program or instruction is executed, the method according to any one of claims 1 to 4 is executed.
A storage medium, characterized by comprising a program or instruction, and when the program or instruction is executed, the method according to any one of claims 1 to 4 is executed.