Difference between useEffect vs useMemo

Introduction

As developers, we encounter situations in Next.js where we need to optimize our code and ensure that our applications perform efficiently. Two important hooks that help us achieve this are useMemo and useEffect. While they may seem similar at first, they serve distinct purposes. In this blog post, we will explore when to use useMemo vs. useEffect in Next.js applications and provide examples to help you make an informed decision.

export default async function Bodycopy({
  value,
}: {
  value: PortableTextBlock;
}) {
  console.log(value);

  return <PortableText value={value} components={serializers} />;
}

Example:

1. Use effcetct...

• useEffect is used for handling side effects and performing tasks after component rendering..
• It can handle API calls, subscriptions, DOM manipulation, and more.
• Use useEffect when you need to perform any side effect that doesn't relate directly to rendering the component.

Example:

import React, { useEffect } from 'react';

exportdefaultasyncfunctionBodycopy({value,}: {value: PortableTextBlock;}) {console.log(value);
return<PortableTextvalue={value}components={serializers}/>;}

Conclusion:
In Next.js applications, choosing between useMemo and useEffect depends on the specific use case. While useMemo is ideal for avoiding expensive computations, useEffect excels at handling side effects. By understanding the characteristics and use cases of each hook, you can optimize your code and ensure your Next.js applications perform efficiently.