Analysis of Blockchain Performance Optimization Algorithm under Multi-Chain Fusion Architecture

With the wide application of blockchain technology in finance, supply chain, Internet of Things and other fields, the performance bottlenecks it faces are increasingly prominent, especially the problems of limited transaction throughput and high confirmation delay. In order to solve these problems, this paper proposes a comprehensive optimization algorithm combining fragmentation technology and improved consensus mechanism to improve the performance of blockchain under multi-chain fusion architecture. The algorithm divides the blockchain network into several independent subnets by using fragmentation technology, which realizes the parallel processing of transactions and significantly improves the transaction throughput and processing speed. At the same time, this paper also adopts an improved PoA (Proof of Authority) consensus mechanism, which improves the consensus efficiency and reduces energy consumption by selecting trusted nodes as verifiers. The experimental results show that the transaction throughput is increased by 45.678% compared with the benchmark network after the introduction of fragmentation technology. After further introducing the improved PoA consensus mechanism, the transaction throughput is once again increased to 178.932 transactions per second, which is 22.835% higher than the stage of only introducing fragmentation technology. In addition, with the introduction of fragmentation technology and PoA consensus mechanism, the transaction delay of blockchain network has been significantly reduced, and the consumption of resources such as CPU, memory and network bandwidth has also shown a significant downward trend. The comprehensive algorithm proposed in this paper, which combines fragmentation technology and consensus mechanism optimization, shows significant performance advantages under the multi-chain fusion architecture, and provides new ideas and methods for solving the performance bottleneck problem faced by blockchain technology, which has important research and application value.