How can I integrate a caching tool into my application?

How can I integrate a caching tool into my application?

Integrating a caching tool typically involves selecting a caching solution, configuring it, and modifying your application code to utilize the cache. What specific technology stack are you using?

I'm using Node.js with Express.

Great! You can use tools like Redis or Memcached. For Redis, you would install the redis package and set up a connection in your Express app. Would you like a code example?

Yes, please provide a code example for Redis integration.

Sure! Here's a simple example:

const express = require('express');
const redis = require('redis');

const app = express();
const client = redis.createClient();

client.on('error', (err) => console.log('Redis Client Error', err));

app.get('/data', async (req, res) => {
    const cacheKey = 'myData';
    client.get(cacheKey, (err, data) => {
        if (data) {
            return res.json(JSON.parse(data));
        } else {
            // Fetch data from your database
            const fetchedData = { message: 'Hello, World!' };
            client.setex(cacheKey, 3600, JSON.stringify(fetchedData));
            return res.json(fetchedData);
        }
    });
});

app.listen(3000, () => console.log('Server running on port 3000')); 

This code checks the cache for data before querying the database.