Research on Fragmentation Technology Based on PBFT Algorithm
As an integrated innovation in the field of distributed consensus,blockchain has attracted the attention of techni-cians and researchers.However,at present,blockchain still faces the problem of scalability,which needs to be solved urgently.Fragmentation technology is considered to be the most practical solution to solve the scalability of blockchain system so far.Howev-er,there are also some problems in fragmentation technology.When nodes are allocated to fragmentation,it is necessary to pay at-tention to that its court nodes will also be allocated to each partition.When practical Byzantine fault tolerance(PBFT)algorithm is used,the credibility of partition data may not be guaranteed.To solve the above problems,a dynamic practical Byzantine fault algo-rithm based on PBFT consensus algorithm is proposed,which is improved by dynamic weight and aggregate signature(DPBFT)and ensures the credibility of partitioned data by adding dynamic weights to nodes for random allocation and improving the consensus al-gorithm.Experiments show that the improved algorithm can effectively improve the system fault tolerance,transaction throughput and reduce transaction delay.
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