---
title: "React.memo() is your friend"
url: https://daily.dev/posts/react-memo-is-your-friend-vmvciehcv
source_url: https://dev.to/nrf/reactmemo-is-your-friend-e6p
type: article
source: "DEV"
published: 2021-12-23T16:21:22.423Z
updated: 2021-12-23T16:21:22.423Z
tags: ["react"]
reading_time: 3
upvotes: 31
comments: 2
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# React.memo() is your friend

**[DEV](https://daily.dev/sources/devto)** · 3 min read · 31 upvotes · 2 comments

## Summary

React.memo() gives us the ability to memoize a React component. Memoization is a general concept which basically means caching the results of some kind of computation for later use. It is an optimization technique which is used quite extensively in the programming world. When memoization is used, there must be a criteria which would dicate when the cached results are no longer valid.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://dev.to/nrf/reactmemo-is-your-friend-e6p>

## Community discussion

Top comments from developers on daily.dev.

**@rajendrasinh** · 0 upvotes

> Simple and useful explanation of the concept.

**@kkurko** · 0 upvotes

> It's great to know how memo works and when you can use it, but it's even better to know how to avoid it and refactor your code to solve the issue memo solves, because constant use of memo will to other issues (most connected with memory usage)

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---

Tags: [#react](https://daily.dev/tags/react)

[View this post on daily.dev](https://daily.dev/posts/react-memo-is-your-friend-vmvciehcv)