React Native Performance Optimisation (useMemo, useCallback, memo)

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In this video, we'll show you how to improve the performance of your application by employing three distinct techniques: useMemo, useCallback, and memo.
By the end of this video, we had increased our application's performance score by an insane +301,71%, so make sure to follow along to do the same for your app!
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Disclaimer: This build is for educational purposes only!! All views, opinions, technology choices expressed in this video are my own and do not represent the views, opinions, technology choices of any entity whatsoever with which I have been, am now, or will be affiliated.
#VadimSavin #notjustdev #reactnative

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16 окт 2022

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Комментарии : 83

@mateuszpusiewicz8851 Год назад

Amazing video! Tutorial on flipper would be great to see 🤩

@eduardocabrera9710 6 месяцев назад

Thanks for the clearest explanation I have ever seen until now. Those examples were amazing, besides the demonstration convinced me to stop ignoring those react tools anymore.

@mounteverest4013 Год назад

Thanks a lot for this. Apply this ASAP

@jahidunnurmaheeofficial2089 10 месяцев назад

What a video! Last 2 weeks I was struggling with react native performance issue. I search in google and everywhere but finally I found a complete solution. Thanks dude!

@ashishmehra2661 Год назад

Serious stuff. Thanks for sharing.

@anazi Год назад

Really good example and amazing explaination 👍👍 Much appreciated.

@stf8375 Год назад

Amazing and super well explained thanks !!!

@chetanbawankule8843 Год назад

Thank you for this This is going to be very helpful

@ko_rizki 7 месяцев назад

that was a clear explanation, thanks, love it.

@carlosceronsantacruz6854 Год назад

Amazing video, Good job

@parthkolgiri7501 6 месяцев назад

Some quality stuff mate!!

@minusmarigold98 2 месяца назад

Wow , really thanks man i needed that a lot!

@notjustdev 2 месяца назад

Glad it helped!

@comment-dev Год назад

Good explanation to optimize rn 🤝

@HaiTran-tz7hm Год назад

Thank u for the really good example bro 🤘

@manikantsharma6108 5 месяцев назад

Well understood, great video

@felipemelendez5741 Год назад

This was awesome, thanks!

@henrycovil2629 8 месяцев назад

flipper plugin!!! Maybe it's still relevant for you

@WOW-fo8gx 9 месяцев назад

Great video. Thanks a lot.

@calebcadainoo Год назад

Interesting will explore the Flipper too 😉

@brainpowerofficial1207 Год назад

Amazing from my crew

@brainpowerofficial1207 Год назад

Vadim if you can make a booking app. We will be waiting

@lubwamaemmanuel7743 Месяц назад

Learn something beautiful for my react native projects. Kudos bruv

@notjustdev Месяц назад

Glad you learned something new 🚀

@abazudosen Год назад

well understood!

@abdallasuliman8165 7 месяцев назад

Nice explanation and example, needs more clarification on useMemo vs useCallback.

@sykn3z Год назад

Great example and thank You!!!! Can You please do it with more complex ítems. Using custom hooks, redux selectors and fetching data. It would be extremly helpful

@parthkolgiri7501 6 месяцев назад

Yes please

@JanghyupLee Год назад

Very easy to understand :)

@SahilSharma-ws1oz 4 месяца назад

Amazing thanks you ❤

@trendscene5374 Год назад

Mesmerizing

@ajagannath898 5 месяцев назад

Excellent explanation bro never show in pratical way in RU-vid ❤❤❤❤

@geohn8238 3 месяца назад

Powerful video 👌🏼💪

@notjustdev 3 месяца назад

Thank you 🙌

@jabbarahmad5095 Год назад

Amazing

@sudharsan685 Год назад

Usefull video 👌

@VickysTuition 9 месяцев назад

Thank you 👍👍👍

@venkynavindla6795 9 месяцев назад

U R D BEST!

@amiribrahim01 Год назад

Thank you

@abdelazizelmehammedy9376 Год назад

Thanks for your good tutorial I have a request for you can you please make a react native app which uses the react-query along with AsyncStorage persistance to make offline mutations that resumes after going back online thanks in advance

@anazi Год назад

We need an explanation on "rendered fewer hooks than expected" This is killing me.

@doniaelfouly4142 Год назад

thanks

@rajkamalsingh2547 Год назад

Great, Is there any article where i integrate or use flipper into my react native app.

@FauziJabbar Год назад

Coollll this's i find... mantap mas bruh

@jakubmuzik3296 9 месяцев назад

Hello, would it be possible to wrap the flatlists renderitem in useCallback function instead of using the Reat.memo on the child component? Would it have the same result ?

@asqarpubgmobile Год назад

Cool😎

@hascardenas Год назад

Thanks for such a helpful video, I'd like to know if you are using Expo or React Native CLI on this video

@lukasgrinevicius5868 Год назад

Thanks! We’re using React Native CLI here

@hascardenas Год назад

Thanks Lukas, I’d really like a video about config Flipper with Expo, I haven’t found any clear tutorial about it. Just a suggestion heheh 😆 thanks for answering

@congdung7599 Год назад

Can you do a video how to add RN Perf monitor in react native project?

@beingMeditative56 8 месяцев назад

'We are trying to check if those objects are allocated in the same space in memory", I heard this at 7:18 sec in video. Same space in memory or same object in memory ?? Got confused here, please clarify.

@JkeyKong 6 месяцев назад

where to download the performance test tool in your video? I also want to test my react native performance like you

@areebchoudhary3785 Месяц назад

Great work buddy, Love from Pakistan 💚🤍

@notjustdev Месяц назад

Thank you!

@andrepadez 11 месяцев назад

Awesome! What is the tool you're using to check performance?

@AnksioXD 8 месяцев назад

its called Flipper

@rohitbansal9183 10 месяцев назад

Performance montor is not showing in disabled section in the flipper... Anything I need to add from the code side.

@shadic7858 8 месяцев назад

Memo also works when the component props includes an array?

@necmettinsargn3934 Год назад

Last time I tried work with flipper but it was very hard to start it. Is it easy now?

@showbikshowmma3520 Год назад

Is this valuable for large scale dynamic applications.

@rodelcrisosto499 11 месяцев назад

can you please make a guide about flipper?

@touseefamjad416 Год назад

Good sir can you please send me tha video link that define pagination in flast list because i see a large number of list is bad performance in flatlist

@sashomilenov2630 Год назад

Great example! Could you tell me the name of the app that you are using for performance check? thank you.

@bryanmehall2208 Год назад

flipper

@applicationdeveloper9057 Год назад

Hello i'm using same technique that you shwon still my logs appear every time on click can you help me ?

@ziahazara1250 Год назад

What is the applications name by which you tested your applications performance? Can you please share it thanks 😃

@mariafailli5558 Год назад

Flipper

@JKholmatov 11 месяцев назад

I am updating location state via watchposition, and a component that does not include location props is re-rendering anyway, what can be the reason?

@stan_de 11 месяцев назад

Is this a nested component? Then you should wrap it with memo and see Magic ;) When state changes - it will re-render component, hence it will also re-redender nested components as well.

@milon27 8 месяцев назад

my react natiave app is showing that not able to use Rn perf monitor , why so?

@gouravnainwaya5669 Год назад

please make a file transfer app, a vpn app in react native without aws

@LanzRuizDesigns Год назад

hello may i know what platform you are using to test that react native app?

@LanzRuizDesigns Год назад

In the following question..do you have github for that demo?

@zksofficial-zh1gh 9 месяцев назад

Need flipper tutorial

@wailynnoo3498 Месяц назад

May i know your debugging tools ?

@aidanwalker3058 7 месяцев назад

How do I install flipper on expo?

@nishantmogha7679 Год назад

Can you please just increase the font size its really hard to see.

@JokeryEU Год назад

why not use flashList ? instead of flatList

@notjustdev Год назад

We have a separate video about FlashList, this one we wanted to keep focused on memo, useMemo and useCallback

@bilalrasool8696 6 месяцев назад

Can you assist me in determining which version of Flipper is suitable, considering that Flipper has been deprecated. Additionally, React Native Debugger is not functioning with Expo SDK 49, and I'm encountering challenges using Redux in Expo SDK 49.

@ThomazMartinez 10 месяцев назад

You dont need memo for this FFS dude, you just need to put that component where you have state changes in seperate component thats it, using memo stuff for everything it shows you have no clue what you doing

@alexfrozen 10 месяцев назад

I declined usage of absolutely all react hooks. Even useState. Only props for decompositions. The only one render at the start. There is a game changer, Reanimated. It's really possible.I've forgot all these re-render nightmare. And have got absolute magic of animations, transitions, swipes and so on. So I heavily recommend research Reanimated in depth instead of all these stuff in video.