How do I implement caching in Node.js?

How do I implement caching in Node.js?

You can implement caching in Node.js using various strategies. One common approach is to use an in-memory cache like Redis or Node's built-in caching modules.

What are the benefits of using Redis for caching?

Redis offers high performance, persistence, and supports various data structures, making it ideal for caching.

Can you show me a simple code example?

Sure! Here's a basic example using Redis:

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

client.set('key', 'value', redis.print);
client.get('key', (err, reply) => {
  console.log(reply); // Will print 'value'
});

How do I handle cache expiration?

You can set an expiration time when you store data in Redis using the EX option. For example:

client.setex('key', 3600, 'value'); // Expires in 1 hour