如何使用Mongoose在MongoDB中自动删除某些日期的文档

npm install mongoose

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
  })
  .catch((error) => {
    console.error('Failed to connect to MongoDB', error);
  });

const documentSchema = new mongoose.Schema({
  content: String,
  expirationDate: Date
});

documentSchema.index({ expirationDate: 1 }, { expireAfterSeconds: 0 });

const Document = mongoose.model('Document', documentSchema);

// 创建文档
const newDocument = new Document({
  content: 'This is a document',
  expirationDate: new Date('2022-01-01')
});

newDocument.save()
  .then(() => {
    console.log('Document created');
  })
  .catch((error) => {
    console.error('Failed to create document', error);
  });

// 查询文档
Document.find()
  .then((documents) => {
    console.log('Documents:', documents);
  })
  .catch((error) => {
    console.error('Failed to query documents', error);
  });

// 删除过期文档
Document.deleteMany({ expirationDate: { $lt: new Date() } })
  .then(() => {
    console.log('Expired documents deleted');
  })
  .catch((error) => {
    console.error('Failed to delete expired documents', error);
  });