Replica Distribution and Configuration Method of Network Node Based on Minimum Rejection Rate

摘要

For the problem that irrational number of replica and configuration method can cause the system performance decline and load imbalance, a new replica configuration method based on minimum rejection rate was proposed in this paper. First, Lagrangian function derivative was used to obtain the optimal number of replicas of each file object and rejection rate was introduced as optimizing target. By setting different load adjustment factor for nodes of different service ability, the nodes were divided into different intervals to reduce the system rejection rate. Compared with existing replication methods, results showed that the method proposed in this paper can obtain lower average load and lower system rejection rate.