nodejs连接redis集群

REDIS_DB=[{"host":"10.0.11.10","port":6379}，{"host":"10.0.11.10","port":6378}，{"host":"10.0.11.11","port":6379}，{"host":"10.0.11.10","port":6378}]

import Redis from ‘ioredis‘;
//创建集群连接
let redis;
const redisConfig = process.env.REDIS_DB;
if (redisConfig) {
    const redisNodes = JSON.parse(redisConfig);
    const prefix = `${process.env.REDIS_PREFIX || ‘nc_‘}`;
    //多于一个节点，创建集群连接
    if (redisNodes.length > 1) {
        redis = new Redis.Cluster(redisNodes, {
            redisOptions: {
                password: null,
            }
        });
    }
   // 如果只配置一个，那么认为是单节点连接
    else if (redisNodes.length === 1) {
        redis = new Redis(`redis://${redisNodes[0].host}:${redisNodes[0].port}/0`, {
            keyPrefix: prefix,
        });
    } else {
        throw (‘redis 配置错误‘)
    }
} else {
    throw (‘redis 配置错误‘)
}