const express = require('express');
const app = express();
const mongoose = require('mongoose');
require('./models/users');
require('./services/passport');
const authRoutes = require('./routes/authRoutes');
const Keys = require('./config/dev');

authRoutes(app);

mongoose.connect(Keys.MONGOOSE_URI);

const port = process.env.PORT || 5000;
app.listen(port);

回答如下：

如果你是按照公司的代理，你必须要站出来否则，你可以检查我的代码。

 const options = {
    useMongoClient: true,
    autoIndex: false, // Don't build indexes
    reconnectTries: 100, // Never stop trying to reconnect
    reconnectInterval: 500, // Reconnect every 500ms
    poolSize: 10, // Maintain up to 10 socket connections
    // If not connected, return errors immediately rather than waiting for reconnect
    bufferMaxEntries: 0
  };
mongoose.connect('mongodb://user:[email protected]:667799/DB_NAME',options).then(
  ()=>{
    console.log("connected to mongoDB")},
 (err)=>{
     console.log("err",err);
}

)