如何修复节点 js 和猫鼬中的缓冲超时错误答案

【问题标题】：How to fix Buffered timeout error in nodejs & mongoose如何修复节点 js 和猫鼬中的缓冲超时错误
【发布时间】：2021-10-22 14:57:17
【问题描述】：

我编写了以下 API：

const express = require("express");
const router = express.Router();
const {getAttendanceSheet,getDailyAttendance} = require("../../services/attendanceService");


router.get("/daily/:date/:location/:workerType", async (req, res) => {
  const {date,location,workerType} = req.params;
  try {
    const serviceResponse = await getDailyAttendance(date,location,workerType)
    res.status(200).json(serviceResponse);
  } catch (error) {
    res.status(500).json({ message: error.message });
  }
});

其中使用了服务文件中的getDailyAttendance服务功能，如您所见

const formatTimeToIso = require("../helpers/timeFormat/momentISO")
const Attendance = require("../models/Attendance")
const Mongoose = require("mongoose");


exports.getDailyAttendance = async(date,locationId,workerType) => {
        const dailyAttendance = await Attendance.find({
          Date:  formatTimeToIso(date),
          locationId: Mongoose.Types.ObjectId(locationId),
          workerType: workerType,
        }).populate("detections");

        console.log(dailyAttendance);

        return dailyAttendance
}

现在，当我在邮递员或浏览器中进行测试时，整个管道工作正常

http://localhost:5002/api/attendance/daily/08-01-21/60dd6d303da6c17209d5ef68/Employee

但是当我在路由文件以外的单独文件中使用 getDailyAttendance 时，就会出现问题

const {getDailyAttendance} = require("./src/services/attendanceService")

async function getJSON () {

    try {
        const serviceResponse = await getDailyAttendance("08-01-21","60dd6d303da6c17209d5ef68","Employee")
        console.log(serviceResponse);

      } catch (error) {
        console.log(error);
        
      }
}

getJSON()

每当我运行它时，它都会抛出以下错误：

MongooseError: Operation `attendances.find()` buffering timed out after 10000ms
    at Timeout.<anonymous> (/home/sp/Desktop/nodejs/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js:185:20)
    at listOnTimeout (internal/timers.js:554:17)
    at processTimers (internal/timers.js:497:7)

我通过在 postman 中运行 API 对 DB 连接进行了交叉检查，确认了它的运行状态，这里似乎有什么问题？

【问题讨论】：

标签： javascript node.js express asynchronous mongoose

【解决方案1】：

我通过在单独的脚本中重新建立猫鼬连接解决了这个问题，语法没有问题

const connectDb = require('./src/config/db')

connectDb()

const {getDailyAttendance} = require("./src/services/attendanceService")

async function getJSON () {

    try {
        const serviceResponse = await getDailyAttendance("08-01-21","60dd6d303da6c17209d5ef68","Employee")
        console.log(serviceResponse);

      } catch (error) {
        console.log(error);
        
      }
}

getJSON()

【讨论】：