How to Improve Performance in React with Code Splitting

Hey everyone, in this video I will be going over the concept of code splitting and lazy loading your code in react.
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#reactjs #codesplitting

[@arn4v_]

You don't have to export default for dynamic import() to work. You can instead do import('./CreatePort').then(module => module.CreatePost)

[@IdandushHen]

you actually have to return object with default import('./CreatePort').then(module => ({default: module.CreatePost})) - like this

[@KevinArellano]

@@IdandushHen you don't have to import/export anything, just have 1 file with 1 line of code and boom!

[@davidchavarriamendez9091]

@@KevinArellano So what's the correct method?

[@KevinArellano]

@@davidchavarriamendez9091 The correct method is up to your case and your boss's case. Can't really choose a "correct" methods when you can do it any way and it works. Now the correct way in my opinion is functionless/serverless architect. Anywhere where microservices can come in and pick up the slack. I absolutely hate when there's a module that either does everything or doesn't do anything at all. Also monoliths are a big no no.

[@leandrogtabak]

@@jameswatadza8962 I don't even know why these people see videos that seem to be so below their level. They just come here to show themselves

[@torstenmirow]

Actually it's easy possible to use named exports instead of default exports. Import function is simply an promise. lazy(()=> import('component/login').then(comp => comp.login)) So no need to change the way you export functions.

[@henrynovoalondono2885]

Absolutely love these small 10 minute videos. To the point, and learned a whole lot. Thanks

[@eshw23]

Yo Pedro amazing video as usual. Good to see your still helping us learn to code while your a software engineer at Twitch!

[@CarolinaNT]

how i leaned so much in a 10 minutes video is out of this world. Thanks Pedro, you're awesome

[@shinobi_coder88]

Hope you stay healthy as always and keep making these micro-learning videos, it literally helps us to cultivate out mindset of "An Expert is a Beginner who stays actively curious and never quits". I like the way you do like, instead of making one long hours big project tutorial, you instead guide us to the basic concepts based on most demanded frontend trends like Performance Optimization and React Hook Form the simplified way. Bravo!!

[@cutieshakira]

I didn't know about this concept, thanks for this! also your editing has gotten super clean!

[@PedroTechnologies]

Happy u liked it! Im re-investing into quality :)

[@michaelantoni8323]

Great performance optimizations, hope you do this kind of videos more.

[@antoniobasilio319]

você é incrível! Merece todo o sucesso do mundo!

[@rahullingan2119]

Simple and straightforward explanation! excellent work👏

[@ramananr3529]

Hey Thanks Man!!! Currently I am working on a project where performance is crucial. I am glad I came across this video and applied it on my project. Really helpful content, Have a great day.

[@tunacant9106]

What is the result like?! I'm so curious, how much performance increase do you see? I'm really new to optimising and making it more faster.

[@MasayaShida]

I have a mediun sized frontend project and this really helps. Thank you

[@greimilnunez5179]

Dude your content is amazing, the way that u explain things is really interesting.

[@marvinfok65]

Simply & straightforward! Love the explanation!

[@softwaredeveloper2897]

I have always wondered how to implement this🤩. Always learning new things from you.

[@naveenau143]

this is just point to point explanation. Loved it

[@badytouray294]

Love this video man :-) well done with the simple explanation

[@anton9410]

Great information, thank you for posting this video.

[@rahulkhatri8304]

This is definitely increase your website performance. I used next/dynamic to import components.

[@priscillasilva6510]

Thank you so much for this video☺You explained it so well

[@devmaheremad7360]

Ohh, Pedro thanks for sharing this with us thank you so much I love that features, please we need a playlist from things like this, thank you again!!!!!

[@enriccogemha858]

Great vid! I recognized the Brazilian accent as the it started playing 😆 Keep up the good work!

[@Aakashiyana]

Very well explained in a practical manner

[@xesvitinho1231]

Muito daora mano, manda muito na programação e no ingles tb!!1 brabo

[@neetugupta8036]

Thank you! Your video was quite useful

[@pauloluguenda8397]

Great content bro, thank you !

[@RamonBalthazar]

Parabéns mano, muito bom o vídeo 👏

[@diegopajuelo9060]

nice man, finally i got it. Thanks.

[@baotruong5775]

Thank you from the bottom of my heart!

[@jatilyadav4000]

Great Video bro... helps a lot.

[@danhloc112]

It's very useful, thank you so much

[@ahmedazizabbassi]

Thanks! Great Job!

[@ThColinPereira]

This is super helpful!

[@yusufkebbe2909]

Amazing explanation thanks man

[@jonathanorrego6199]

Gracias Pedro! nuevo skill desbloqueado!

[@brilliantatosam6882]

Hey man, I watched this video earlier and loved the concept of lazy loading. I am currently implementing it into my current project and am here to ask if lazy loading caches loaded components. Thanks, man.

[@ZubairKhan-mb6rd]

Good information on optimisation of a react app.

[@Krazness]

Great vid bro. Thanks

[@tan2cang93]

many thanks for your sharing. I have applied react lazy in my project. Howerver, there are so many named export components in project (~ 40-50 files), so I can not go into each Component to change export to export default. Fortunately, I found a package lazily on npm, it works the same as React lazy but will convert named export to default export.

[@jpcc1223]

Ótimo conteúdo, obrigado!

[@andrewaghoghovwia1948]

Hi Pedro..thanks for the invaluable resource. Please can you do a video on design patterns with examples. Thanks

[@TheMrtastee]

great video!, is there a way to start loading in the background a lazy component after our normal component renders but before we actually requires the lazy ones?.

[@Vedant-M]

Watching Pedro's videos never disappoints. Keep it up 👍🏼👍🏼

[@tadzyla]

Hi Pedro, thank you for sharing tips. I just want to clarify if this can be achieved as well with ? Which is rendering exact route

[@bofevitaminado]

Brabo! Adoro esse canal

[@heitortessaro5612]

Great content, congrats

[@davidsyengo1893]

Top notch as usual

[@jesielpalacios]

I'd be great a React crud implementation with Redux and hooks, it's without classes, using containers, slices as well for explain as other ways or cases to use, idk, a tutorial of it without pain ❤

[@Abhisumant03]

New react course was damn good 😊😊

[@sillasbernardodev]

Nice explanation

[@gabrielgherman87]

Excelente vídeo! Valeu!

[@MrSundaayy]

Thank you bro!

[@andriipereverziev6287]

Good video! Thank tou

[@wylakers1250]

thanks for the vid. I was wondering what theme do you use? Thanks

[@ayushyt918]

Thanks Pedro

[@tharindumandusanka7708]

Thanks Man ❤❤❤❤

[@jesielpalacios]

6:35 Actually React Suspense has been used with the same regularity throughout all versions of it's for as long as the hook exists, but it's ok :)

[@aldotube88]

Nice video, would have been good if you had the code linked in the description also though

[@XeonAlpha]

Probably a really stupid question but could you use this same idea to dynamically import a CSS theme to allow a user to select they’re own personalized theme.

[@bekiteshome4670]

As always brother didn't let us down!

[@dimitmoto1716]

Thanks a lot!

[@rahulkulkarni9653]

This is amazing 🥰

[@eliyahutarab4862]

Nice thank you for that this is great

[@wpxpert98]

Thank you

[@dandantin]

Excellent Video. Pedro, where are you from?

[@maxplank1780]

What is the end value of performance you won? Have you calculated it? Or it's just fine thoughts that you read somewhere?

[@benlamar18]

Thanks alot

[@masj7786]

I think I've learned from you in a couple of hours more than all these pointless Udemy 40+ hour courses

[@fadyfathey4315]

THNX BRO

[@rahulkulkarni9653]

Please make more videos on how to improve the performance of react application

[@podpison3268]

Good point

[@saadowain3511]

Amazing .

[@arifhussain5276]

Awesome video

[@Saiintss7]

Is suspense a ready to use and stable functionnality with react ? Because it has been introduced an experimental one for years now

[@PurexXD]

Peidro tech sensei. Saludos desde Perú.

[@lilizok4]

awesome video !!

[@PedroTechnologies]

Obrigado!!

[@salamikhalil9716]

Great content 👌

[@PedroTechnologies]

Glad you liked it

[@chinnaraghs4000]

Hi Bro good explanation

[@SeekerofUniverse33]

what theme are you using Pedro nice color combination

[@priyabansal9911]

Please make a playlist -> how to improve

[@douglasbernardodev]

Very usefull man... thanks for share!

[@shubhamdharpure8586]

Which theme you are using in this video

[@EricOnYouTube]

Pedro, do you have a tutorial on how to auth with Google and then register with an express API app? Thanks.

[@golf-and-surf]

Why do i blink when i route between pages after adding lazy load?

[@xxvsvitorxx]

Ótimo video! Poderia fazer um vídeo falando sobre o novo use hook e como isso impactará no React query?

[@PedroTechnologies]

Vou fazer!

[@cristhiancunha]

@@PedroTechnologies só vim perceber que era br quando vi os comentários, ótima dicção e ótimo conteúdo, me lembrou bastante a forma como o conteúdo é gerenciado (talvez por debaixo dos panos não tenha nada a ver) pelas páginas agora no Nextjs 13.

[@jaganvichu]

Same problem on my project but I used redux thunk and api calling whenever other pages openings.. so api taking some time for the response.

[@mahammadmansurali7442]

Can you also make a video on , how to improve performance in Nextjs..please

[@yadneshkhode3091]

Thanks

[@stressed-ashen-cat]

You can also code split packages using react loadable.

[@russellbanares5324]

Does this affect the app when deploying it?

[@Untouchable5461]

whats your theme font for vscode?

[@eduardohernandezsoto785]

I have problem with tailwind css, it's not show css implemented when use lazy

[@calltoreason]

How do you deal with paths that you request form the server and you display the path component in a react bundle? NOT ON A DEV SERVER!! YOU BUILD THE PROJECT AND SERVE IT USING EXPRESS OR WHATEVER. How do you manage that?

[@sagarkudu3123]

Great ❤️❤️❤️

[@sohrb]

can you lazy load components from an index file?

[@Thanveershah]

Jeez the quality ✔✔, What mic do you use?

[@PedroTechnologies]

Thank you

[@elQueFaltaba]

Question, because I can't check it right now. By wrapping Suspense around ALL the links and ALL the lazy loaded components you are forcing ALL of them to be loaded until the menu of links is shown, am I wrong?

[@PedroTechnologies]

No, the menu of links is not lazily loaded and not inside of the Suspense wrapper. It might load first but its independent from the lazily loaded components. Im not sure if I understood the question correctly though so let me know hahaha

[@elQueFaltaba]

@@PedroTechnologies ok, I might have not made it clear (it's midnight here in Spain). Suspense wraps it's children and doesn't show anything other than the Loading component until ALL the children have been loaded, right?

[@PedroTechnologies]

Noo, the suspense will show the fallback if it is triggered. In the case of lazy loading, it will show the fallback whenever one of the components inside of it are loading for the first time. In the video you see that as i switch routes it will show the fallback as long as its the first time i am going to that route

[@nabinsaud4688]

I saw React router documentation v6.4 there is not available old style of doing

[@oneofone_1333]

Yo Pedro love your content always, huge inspiration. Quick question, is it normal that am having more fun and actually building stuff in react js and not vanilla js? As soon as i learned the basic in vanilla js, i moved on to react and no am a bit worried that i didnt spend enough time in learning everthing in JS and building projects. Hope it makes what i just wrote😂. Greetings from Switzerland

[@RonnieryBorges]

Mano seu Inglês está brabo congratz.