How do I implement API caching?

How do I implement API caching in my application?

To implement API caching, you can use techniques like in-memory caching, HTTP caching, or a dedicated caching layer.

What are the benefits of using caching for APIs?

Caching can significantly reduce response times, decrease server load, and improve user experience by serving cached data.

Can you give me an example of how to set up caching in a Node.js application?

Sure! You can use libraries like node-cache or Redis to cache API responses. Would you like a code snippet?

Yes, please provide a code snippet for using Redis.

Here's a simple example:

const redis = require('redis');
const client = redis.createClient();

app.get('/api/data', (req, res) => {
  client.get('dataKey', (err, data) => {
    if (data) {
      return res.json(JSON.parse(data));
    }
    // Fetch data from the source and cache it
    fetchDataFromSource().then(data => {
      client.setex('dataKey', 3600, JSON.stringify(data));
      res.json(data);
    });
  });
});