Advanced Topics

This section covers more advanced topics in web development.

Performance Optimization

Optimizing your web application is crucial for user experience. Here are some key strategies:

Code Splitting

Split your code into smaller chunks that can be loaded on demand:

// Dynamic imports
import { lazy } from "react";

const Component = lazy(() => import("./Component"));

Image Optimization

Use Next.js Image component for automatic optimization:

import Image from "next/image";

export default function MyImage() {
	return <Image src="/photo.jpg" width={500} height={300} alt="Photo" />;
}

TypeScript Best Practices

Type Safety

Always define proper types for your functions:

interface User {
	id: number;
	name: string;
	email: string;
}

function getUser(id: number): Promise<User> {
	return fetch(`/api/users/${id}`).then((res) => res.json());
}

Generics

Use generics for reusable type-safe functions:

function identity<T>(arg: T): T {
	return arg;
}

const result = identity<string>("hello");

Deployment

When deploying your Next.js application, consider:

1. Environment variables - Keep secrets secure
2. Build optimization - Minimize bundle size
3. CDN configuration - Serve static assets efficiently
4. Monitoring and analytics - Track performance and errors

Conclusion

These are just some of the advanced topics you'll encounter in modern web development. Keep learning and experimenting!