关键词: 关键词: 区块链, 存储扩展, 一致性哈希, 虚拟节点, 动态权重

Abstract: In order to address the storage problem caused by the rapid growth of blockchain data, an improved consistent hashing algorithm was proposed to achieve blockchain storage scalability. To address the problem of uneven node storage load and data skew in Hyperledger Fabric for enterprise applications, an improved solution based on consistent hashing was proposed— the Hash Algorithm based on Virtual Node Allocation and Dynamic Weight Strategy (VNDWS). Firstly, a virtual node allocation mechanism was adopted to dynamically assign multiple virtual nodes to each node, ensuring an even distribution of data across the hashing ring and reducing load imbalance. Secondly, a dynamic weight mechanism was applied to adjust weights in real-time based on performance indicators such as node storage capacity and network latency, enabling high-performance nodes to handle larger data loads, and thereby optimizing data distribution and storage efficiency. Simulation results showed that compared with the traditional blockchain Fabric network and the conventional consistent hashing algorithm, the VNDWS algorithm reduced node storage consumption by 48.31% and 6.39%, respectively, while improving data query efficiency by 96.25% and 21.95%. The VNDWS algorithm effectively reduces node storage consumption and enhances query efficiency in terms of storage scalability.

Key words: Keywords: blockchain, storage expansion, consistent hashing, virtual node, dynamic weight