Boost React Performance: Effective Use of React.memo and useMemo

Boost React Performance: Effective Use of React.memo and useMemoBoost React Performance: Effective Use of React.memo and useMemo

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Tonye Onuoha

pro

• 4h

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁

𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄?

When you wrap a component with "React.memo", props are compared using 𝘀𝗵𝗮𝗹𝗹𝗼𝘄 𝗰𝗼𝗺𝗽𝗮𝗿𝗶𝘀𝗼𝗻, not deep comparison.

This means:

- Primitive props (strings, numbers, booleans) are compared efficiently

- But objects, arrays, and functions will 𝗮𝗹𝘄𝗮𝘆𝘀 𝗮𝗽𝗽𝗲𝗮𝗿 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 unless they’re memoized

So if you’re passing objects or functions to a memoized component, pair "React.memo" with "useMemo" or "useCallback" to prevent unnecessary re-renders.

Small change, big performance win.

#WebDevelopment #SoftwareEngineering #PerformanceOptimization #FullstackDeveloper

React JavaScript frontend

Abhiram Tinguria

• 4h

Great tip. Shallow comparison nuances like this often explain unexpected rendering behavior in larger applications.

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Join 1.25M professional creatives like you

Connect with clients, get discovered, and run your business 100% commission-free

Creatives on Contra have earned over $150M and we are just getting started

Back to feedPost

Tonye Onuoha

pro

• 4h

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁

𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄?

When you wrap a component with "React.memo", props are compared using 𝘀𝗵𝗮𝗹𝗹𝗼𝘄 𝗰𝗼𝗺𝗽𝗮𝗿𝗶𝘀𝗼𝗻, not deep comparison.

This means:

- Primitive props (strings, numbers, booleans) are compared efficiently

- But objects, arrays, and functions will 𝗮𝗹𝘄𝗮𝘆𝘀 𝗮𝗽𝗽𝗲𝗮𝗿 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 unless they’re memoized

So if you’re passing objects or functions to a memoized component, pair "React.memo" with "useMemo" or "useCallback" to prevent unnecessary re-renders.

Small change, big performance win.

#WebDevelopment #SoftwareEngineering #PerformanceOptimization #FullstackDeveloper

React JavaScript frontend

Abhiram Tinguria

• 4h

Great tip. Shallow comparison nuances like this often explain unexpected rendering behavior in larger applications.

Joel Page

• Feb 20

Check out Querent my turn-based deck-builder RPG I made with Rive.

Some of the features I used: -🧙‍♂️Data binding for character customization -🃏Lists for game settings and in-game playing cards -📱Responsive layout -📜Rive scripts to simplify game code Play the demo now: querent.games

JavaScript Rive gameswithrive

Karina

pro

• Feb 21

Looks amazing!! Awesome job Joel!

YOGESH KSHIRSAGAR

• Feb 20

Teams lose knowledge across chats, notes, and docs — Neuraone turns that scattered information into an AI-powered workspace.

LIVE URL: https://neuraone-62263.bubbleapps.io/

Instead of losing notes, chats, and documents across tools, Neuraone lets you store memories once and reuse them through AI to generate answers and decisions faster.

What it includes: • Personal + Team Workspaces • Memory Vault for notes, PDFs, etc. • AI chat powered by workspace knowledge • Notes → Memory workflow • Credit system + monetization-ready structure

Built with a SaaS pricing structure (Free, Pro).Built for agencies, businesses, and students who want a smarter way to organize knowledge and collaborate with AI.

Previously part of #BubbleBuildsRevenue, now evolving into a production-ready AI workspace with payments, credits, and team collaboration.

Bubble saas profitwithbubble

Fred Moon

pro

• Feb 19

i will never get tired of seeing my webgl animated directly inside @framer

Unicorn Studio Framer

Val Guerra

pro

• Feb 19

Fantastic work, do you plan the final animation to be morphing every few seconds or are you just testing which variant works better? I am all in for variant 6.