Research of Raft Algorithm Improvement in Blockchain

Blockchain has the characteristics of decentralisation, security, reliability and non-tampering, and its core is to reach consensus reliably and quickly through a suitable consensus mechanism. The Raft consensus algorithm in blockchain has advantages such as high performance and high availability, which is suitable for asset management business, but the existing Raft algorithm improvement strategy still has the problems of possible voting divergence and insufficient consideration of malicious node shielding, so the paper proposes a Raft algorithm election improvement scheme and potential malicious node defence improvement scheme, which has more rigorous logic, and is able to reduce the election failure rate, verify the correctness of the leader node, for all the malicious nodes in the system can be accurately identified and shielded, to protect the security of the system, so that the Raft algorithm has a wider range of applications.