从NodeJS中删除MongoDB中不同集合中的文档，以保持数据库一致性

const mongoose = require('mongoose');

// 连接MongoDB数据库
mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => {
    console.log('Connected to MongoDB');
    
    // 删除文档
    const deleteDocuments = async () => {
      try {
        // 查询并删除文档
        await Promise.all([
          mongoose.model('Collection1').deleteMany({}),
          mongoose.model('Collection2').deleteMany({})
        ]);
        
        console.log('Documents deleted successfully');
      } catch (error) {
        console.error('Error deleting documents:', error);
      } finally {
        // 断开数据库连接
        mongoose.disconnect();
      }
    };
    
    // 调用删除文档函数
    deleteDocuments();
  })
  .catch((error) => {
    console.error('Error connecting to MongoDB:', error);
  });