Reducing edge requests - v0 by Vercel

Based on your crypto application getting many 304 responses, here are several strategies to reduce Edge Requests on Vercel:

Understanding 304 Responses

304 responses indicate content that has been fetched multiple times - this suggests your app is making repeated requests for the same resources 1. In crypto apps, this commonly happens due to frequent price polling and real-time updates.

Optimization Strategies

1. Reduce Excessive Polling

The most common cause in crypto apps is aggressive polling for price updates 1:

// Instead of polling every second
useEffect(() => {
  const interval = setInterval(fetchPrices, 1000); // Too frequent
  return () => clearInterval(interval);
}, []);

// Use longer intervals or WebSockets
useEffect(() => {
  const interval = setInterval(fetchPrices, 30000); // 30 seconds
  return () => clearInterval(interval);
}, []);

// Or better yet, use WebSockets for real-time data
const ws = new WebSocket('wss://crypto-api.com/prices');

2. Optimize Data Fetching Libraries

If using SWR or React Query, configure them to reduce requests 1:

// Configure SWR to be less aggressive
const { data } = useSWR('/api/prices', fetcher, {
  refreshInterval: 30000, // 30 seconds instead of default
  revalidateOnFocus: false, // Don't refetch on window focus
  revalidateOnReconnect: false,
});

3. Reduce Prefetching

Limit Next.js Link prefetching 1:

// Disable prefetching on navigation links
<Link href="/portfolio" prefetch={false}>
  Portfolio
</Link>

4. Identify Frequent Re-mounting

Use browser DevTools to identify components that re-mount frequently 1:

Check Network tab for repeated requests with 304 status
Look for the same API endpoints being called multiple times

5. Implement Proper Caching

Add appropriate cache headers to your API routes:

// In your API route
export async function GET() {
  const data = await fetchCryptoData();
  
  return new Response(JSON.stringify(data), {
    headers: {
      'Cache-Control': 'public, s-maxage=30, stale-while-revalidate=60',
    },
  });
}

Monitoring Your Progress

You can track your optimization efforts in the Vercel dashboard 1:

Go to your project's Usage tab
View the Edge Requests chart
Monitor the count and identify which projects/regions have the highest requests
Use the full-screen view to analyze patterns over time

The goal is to maintain real-time functionality while reducing unnecessary duplicate requests that result in 304 responses.