index.mts

import express from 'express';
import { caching } from 'cache-manager';

const app = express();
const cache = await caching('memory', { ttl: 10 * 1000, max: 500 });

app.get('/', async (_req, res) =>
  res.send(await cache.wrap('foo', async () => 'bar')),
);

// and somewhere else:

const _server = app.listen(3000, () => {
  console.log('Listen in 3000');
});