What are the best practices for caching in Express.js?

What are the best practices for caching in Express.js?

When caching in Express.js, consider using middleware like apicache or node-cache. It's important to cache responses based on the request parameters and set appropriate cache expiration times.

How do I implement caching for API responses?

You can implement caching for API responses by using middleware to store the response in memory or a distributed cache like Redis. For example, you can cache the response of a GET request and serve it from the cache for subsequent requests.

What should I cache and what should I avoid caching?

Cache static resources like images and stylesheets, as well as API responses that don't change often. Avoid caching sensitive data or frequently changing content.

Can you give an example of caching middleware?

Sure! Here's a simple example using apicache:

const apicache = require('apicache');
const cache = apicache.middleware;

app.get('/api/data', cache('5 minutes'), (req, res) => {
  res.json({ data: 'This is cached data!' });
});