How can I implement caching in Next.js API routes?

How can I implement caching in Next.js API routes?

You can implement caching in Next.js API routes by using middleware or libraries like node-cache or Redis. Would you like a code example?

Yes, please provide a code example using node-cache.

Sure! First, install node-cache using npm. Then, you can create a cache instance and use it in your API route like this:

import NodeCache from 'node-cache';
const cache = new NodeCache();

export default async function handler(req, res) {
  const key = 'myData';
  const cachedData = cache.get(key);

  if (cachedData) {
    return res.status(200).json(cachedData);
  }

  const data = await fetchDataFromAPI(); // Your data fetching logic
  cache.set(key, data, 3600); // Cache for 1 hour
  return res.status(200).json(data);
}

What if I want to invalidate the cache?

You can invalidate the cache by using the del method from node-cache. For example, you can call cache.del(key); whenever you want to remove the cached data.