首次使用MongoDB与Mongoose遇错误：peoples.insertOne()缓冲超时10000ms

你遇到的MongooseError: Operation peoples.insertOne() buffering timed out after 10000ms错误，核心原因是数据库连接还没建立完成，就执行了数据保存操作——Mongoose的connect是异步方法，代码里直接在调用connect后就执行people.save()，此时连接可能还在建立中，导致操作被缓冲后超时。

修复方案 #

可以通过以下两种方式确保连接完成后再执行数据库操作：

方式1：使用async/await

import mongoose from "mongoose";

mongoose.set("strictQuery", false);

// 用async函数包裹逻辑
async function start() {
  try {
    await mongoose.connect("mongodb://localhost:27017/peopleDB", { useNewUrlParser: true });
    console.log("MongoDB is connected");

    const peopleSchema = new mongoose.Schema({
      name: String,
      age: Number,
    });

    const People = mongoose.model("People", peopleSchema);

    const people = new People({ name: "John", age: 37 });
    await people.save();
    console.log("数据保存成功");
  } catch (err) {
    console.error("连接或保存失败：", err);
  }
}

start();

方式2：使用Promise的then方法

import mongoose from "mongoose";

mongoose.set("strictQuery", false);

mongoose.connect("mongodb://localhost:27017/peopleDB", { useNewUrlParser: true })
  .then(() => {
    console.log("MongoDB is connected");

    const peopleSchema = new mongoose.Schema({
      name: String,
      age: Number,
    });

    const People = mongoose.model("People", peopleSchema);

    const people = new People({ name: "John", age: 37 });
    return people.save();
  })
  .then(() => {
    console.log("数据保存成功");
  })
  .catch(err => {
    console.error("连接或保存失败：", err);
  });

额外注意事项 #

• 确保本地MongoDB服务已经启动，端口27017正常监听
• 如果你使用的是Mongoose 6及以上版本，useNewUrlParser已经是默认配置，可以不用显式传入

内容的提问来源于stack exchange，提问作者G raj Kumar