javascript - Mongoose 错误 : Operation 'featureds.find()` buffering timed out after 10000ms

Question

我在 MongoDB 上有一个集合，我尝试使用 find() 查询所有元素:

const mongoose = require('mongoose');
const Featured = mongoose.model('featured');
module.exports = app => {
    app.get('/api/featured', async (req, res) => {
      console.log("featured route");
      const featured = await Featured.find();
      console.log(featured);
      res.send(featured);
    })
}

这是 Featured.js:

const mongoose = require('mongoose');
const { Schema } = mongoose;

const featuredSchema = new Schema({});

mongoose.model('featured', featuredSchema);

但是，我在提出请求时收到错误:

(node:75568) UnhandledPromiseRejectionWarning: MongooseError: Operation `featureds.find()` buffering timed out after 10000ms
    at Timeout.<anonymous> (/Users/prikshetsharma/Desktop/humboiserver/node_modules/mongoose/lib/drivers/node-mongodb-native/collection.js:184:20)
    at listOnTimeout (internal/timers.js:554:17)
    at processTimers (internal/timers.js:497:7)
(node:75568) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)

如何修复此错误并让所有收藏项返回 find() ?奇怪的是，错误显示 featureds.find()而我从未在任何地方的代码中使用过特色词。

Answer 1

对于可能偶然发现此问题的其他人:我的问题与连接错误有关，我设法通过使用 mongoose.connect 修复它而不是 mongoose.createConnection .
请注意 Mongoose documentation saying :

Mongoose will not throw any errors by default if you use a model without connecting.

...这只会导致缓冲超时。