denet-node-server/model/redis_db.js

var Redis = require('ioredis');  //导入 安装好的 redis.  npm i ioredis --save 
var config = require('../config/config.js') // 导入位置文件

//redis 服务启动 /usr/local/bin/redis-server /usr/local/etc/redis.conf


var REDIS_INSTANCE = new Redis({
  port: config.db_config.test.redis.PORT, 
  host: config.db_config.test.redis.HOST, 
  username: config.db_config.test.redis.USERNAME, 
  password: config.db_config.test.redis.PASSWORD,
});

function redis_set(key,value){
  REDIS_INSTANCE.set(key,value);
}

async function redis_get(key){
  return await REDIS_INSTANCE.get(key);
}

module.exports = {
  redis_set,
  redis_get,
}