MongooseでlocalhostのmongoDBに接続できない原因

概要

localhostだと接続できないが127.0.0.1だと接続できるとのこと。

OK

mongodb://127.0.0.1:27017/xxx

import mongoose from 'mongoose'

const connectDB = async () => {
  try {
    await mongoose.connect('mongodb://127.0.0.1:27017/xxx');
    console.log("connected to MongoDB.");
  } catch (err) {
    console.log("unconnected to MongoDB.");
    throw new Error();
  }
};

export default connectDB;

NG

mongodb://localhost:27017/xxx

参考サイト

Mongoose can't connect (localhost)
I am trying to connect to my database using mongoose within Apollo-Server-Express. I have created a db in the terminal. I read that 'mongodb://localhost:27017/*db-name *' is the default uri-string ...

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