- Implement dynamic imports for heavy components:
// Instead of direct imports
const ReactQuill = dynamic(() => import('react-quill'), {
ssr: false,
loading: () => <div>Loading editor...</div>
});- Route-based code splitting for major sections:
// In app directory
const AdminPanel = dynamic(() => import('@/components/AdminPanel'), {
loading: () => <LoadingSpinner />
});- Implement next/image properly with blur placeholders:
<Image
src={image}
alt={alt}
width={500}
height={300}
placeholder="blur"
blurDataURL={`data:image/jpeg;base64,...`}
priority={isAboveFold}
/>- Use WebP format and responsive images:
<picture>
<source srcSet="/image.webp" type="image/webp" />
<source srcSet="/image.jpg" type="image/jpeg" />
<img src="/image.jpg" alt="..." />
</picture>- Implement proper memoization:
const MemoizedComponent = React.memo(({ data }) => {
return <div>{data}</div>
}, (prevProps, nextProps) => {
return prevProps.data === nextProps.data;
});- Use callback optimization:
const handleChange = useCallback((event) => {
setValue(event.target.value);
}, []);- Split context providers to prevent unnecessary re-renders:
const ThemeProvider = ({ children }) => {
const [theme, setTheme] = useState('light');
return (
<ThemeContext.Provider value={{ theme, setTheme }}>
{children}
</ThemeContext.Provider>
);
};- Implement proper caching strategies:
// In your API routes
export const revalidate = 3600; // Revalidate every hour
// For static pages
export const generateStaticParams = async () => {
const posts = await getPosts();
return posts.map((post) => ({
id: post.id,
}));
};- Optimize database queries:
// Instead of multiple queries
const getPostWithDetails = async (id) => {
return await prisma.post.findUnique({
where: { id },
include: {
author: true,
comments: true
}
});
};.
- Implement proper metadata:
// In layout.tsx
export const metadata = {
metadataBase: new URL('https://yourdomain.com'),
title: {
default: 'Your Site',
template: '%s | Your Site'
},
description: 'Your site description',
openGraph: {
images: '/og-image.jpg',
}
};- Implement structured data:
<script
type="application/ld+json"
dangerouslySetInnerHTML={{
__html: JSON.stringify({
"@context": "https://schema.org",
"@type": "Organization",
"name": "Your Company",
"url": "https://yourdomain.com"
})
}}
/>- Optimize Largest Contentful Paint (LCP):
- Preload critical resources
- Optimize images above the fold
- Use CDN for static assets
- Optimize First Input Delay (FID):
- Break up long tasks
- Defer non-critical JavaScript
- Use Web Workers for heavy computations
- Optimize Cumulative Layout Shift (CLS):
- Set explicit dimensions for images
- Reserve space for dynamic content
- Avoid inserting content above existing content
- Optimize build configuration:
// next.config.js
module.exports = {
compress: true,
poweredByHeader: false,
images: {
domains: ['your-image-domain.com'],
formats: ['image/avif', 'image/webp'],
},
webpack: (config, { dev, isServer }) => {
// Custom webpack optimizations
return config;
},
};- Implement proper caching headers:
// In middleware.ts or API routes
export function middleware(request: NextRequest) {
const response = NextResponse.next();
response.headers.set('Cache-Control', 'public, max-age=31536000, immutable');
return response;
}- First Priority:
- Image optimization
- Code splitting
- Critical CSS extraction
- API response caching
- Second Priority:
- Component optimization
- State management improvements
- SEO implementations
- Third Priority:
- Build optimizations
- Advanced caching strategies
- Performance monitoring setup