Next.js offers incredible performance out of the box, but to truly achieve peak speeds, you need to leverage its advanced features correctly.
Server Components
By rendering components on the server, you reduce the amount of JavaScript sent to the client. This dramatically improves Time to Interactive (TTI) and First Contentful Paint (FCP).
// This runs on the server!
async function GetData() {
const data = await db.query("SELECT * FROM posts");
return (
<div>
{data.map((post) => (
<Post key={post.id} {...post} />
))}
</div>
);
}
Image Optimization
Always use the next/image component. It automatically serves images in modern formats like WebP and AVIF, and resizes them based on the device's viewport.
Caching Strategies
Understanding the caching mechanisms in Next.js 14+ is crucial. Use revalidate carefully to ensure your dynamic content stays fresh without sacrificing performance.