npm install easy-redis --save

//use bluebird to promise redis package

var redis = require('easy-redis')(`${__dirname}/redisConfig.json`, opts);
redis.getConnect('localhost').setAsync('test', 'oops').then((result) => {
    //dosomething
})

opts = {
    env: 'dev'
}
with env, you distinguish dev environment or production.

redisConfig.json contents as follow:
{
    "localhost": [
        {
            "host": "127.0.0.1",
            "port": 6379
        },
        ...
    ],
    ...
}

npm test