与nodejs配合使用时如何在mongodb中缓存常用数据

const MongoClient = require('mongodb').MongoClient;
const url = 'mongodb://localhost:27017/mydatabase';

MongoClient.connect(url, function(err, client) {
  if(err) throw err;
  console.log('Connected to MongoDB');

  // 在这里进行缓存操作
});

const db = client.db('mydatabase');
const cacheCollection = db.collection('cache');

const data = { key: 'myKey', value: 'myValue' };
cacheCollection.insertOne(data, function(err, res) {
  if(err) throw err;
  console.log('Data inserted into cache');
});

const filter = { key: 'myKey' };
const update = { $set: { value: 'updatedValue' } };
cacheCollection.updateOne(filter, update, function(err, res) {
  if(err) throw err;
  console.log('Data updated in cache');
});

const query = { key: 'myKey' };
cacheCollection.findOne(query, function(err, result) {
  if(err) throw err;
  console.log('Cached data: ', result);
});