Blockchain network data synchronization method

I. Key terms

Term definition A blockchain network consists of multiple nodes, each of which stores a complete or partial copy of the blockchain data. Node A participant in a blockchain network, which can be a computer, server, or other device. Blocks contain data structures of transaction data, linked in chronological order to form a blockchain. Block identifiers are used to uniquely identify data of a block, such as a block hash value. Synchronization The process of keeping the data of different nodes in a blockchain network consistent. Current node refers to the node that is performing data synchronization operations. Synchronization height The height of the blockchain to which the current node has synchronized, indicating the number of synchronized blocks. Block cache pools are used to temporarily store data structures of blocks obtained from other nodes. Transaction summary information cache pools are used to temporarily store data structures of summary information of transactions contained in blocks obtained from other nodes. First set A set of block identifiers of all blocks that the current node needs to synchronize. Second set A smaller subset into which the first set is split in order to improve synchronization efficiency. Synchronization task list A data structure used to track blocks to be synchronized and their synchronization status. Predetermined threshold A threshold used to determine whether the first set needs to be split into multiple second sets. Configurable parameters are used to control parameters of the synchronization process, such as the size or number of the second set.

2. Short answer questions

Please briefly describe the necessity of data synchronization in the blockchain network.

The data synchronization method described in the CN109274754B patent, how to determine which blocks the current node needs to synchronize?

What is the role of the synchronization task list? What information does it contain?

What data are the block cache pool and the transaction summary information cache pool used to store respectively?

Why is it necessary to split the first set into multiple second sets? What are the benefits of doing so?

How to determine whether the block obtained from the block cache pool can be linked to the blockchain of the current node?

If the hash value of the block obtained from the block cache pool does not match the hash value saved in the current node blockchain, what should be done?

What is the purpose of transaction summary information? Under what circumstances is it necessary to re-acquire transaction summary information?

What are the advantages of the data synchronization method proposed in the present invention compared to the existing technology?

Please list at least two scenarios where the data synchronization method proposed in the present invention can be applied.

3. Answers to short answer questions

Each node in the blockchain network needs to maintain data consistency in order to ensure the security and reliability of the entire network. Data synchronization is to achieve this goal, updating the latest data to all nodes.

This method determines whether synchronization needs to be performed and determines the range of blocks that need to be synchronized by comparing the synchronization height of the current node, the first node height received from the blockchain network, and the second node height stored by the current node.

The synchronization task list is used to track the blocks to be synchronized and their synchronization status, including block identifiers and synchronization status (such as "ready to start", "in progress", "completed").

The block cache pool is used to temporarily store block data obtained from other nodes, while the transaction summary information cache pool stores summary information of transactions contained in blocks obtained from other nodes.

Splitting the large first set into a small second set can increase the speed of each synchronization, making the synchronization smoother and avoiding network congestion.

The block height and block validity need to be checked. The block height must be equal to the current node blockchain height plus 1, and the hash value of the block needs to match the hash value of the previous block.

It is necessary to check whether the block identifier of the block exists in the synchronization task list. If it exists, the block is ignored; if not, the block identifier is added to the synchronization task list and synchronized again.

Transaction summary information can be used to quickly verify transactions without downloading complete block data. If the required information cannot be obtained from the transaction summary information cache pool, it is necessary to re-acquire the block from other nodes and extract the summary information.

The present invention can prevent repeated synchronization of data, improve synchronization efficiency and success rate, and effectively utilize network bandwidth and computing resources.

The present invention can be applied to various blockchain networks such as public chains, alliance chains and private chains, such as: cryptocurrency trading platforms, supply chain management systems, digital identity authentication systems, etc.

IV. Paper Title

Compare and contrast at least two blockchain data synchronization methods in detail, analyze their respective advantages and disadvantages and applicable scenarios.

Explore the security challenges of data synchronization in blockchain networks and propose corresponding solutions.

Design an efficient data synchronization mechanism for large-scale blockchain networks, and perform performance analysis and evaluation.

Study the application prospects and challenges of blockchain data synchronization technology in the fields of Internet of Things, edge computing, etc.

Analyze the future development trend of blockchain data synchronization and explore its impact on the development of blockchain technology.