Node.js Tutorial - 61 - Cluster Module

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Cluster Module
Node.js Tutorial
Node.js Tutorial for Beginners

[@xenky0]

I think the whole course has an extremely deep explanation that a senior must know, it's not just for a beginner. Super nice tutorials and many thanks to the authors.

[@narotamkumarmishra6139]

yeah, coz explanation is beginner friendly😊

[@mysuperemecy]

This series is by far one of the best to understand and work on nodejs. Thank you for teaching nodejs

[@jm.sarmiento]

precise and concise explanation. This is how all video tutorials should be. Thank you very much and congratulations for the content.

[@AnimeEditsMemes]

For users with windows OS please include cluster.schedulingPolicy='rr' to round robin, by default for windows the clusters scheduling policy will be set to none and works will not be distributed among the child process no matter the number of logical cores child process created the master handles all the load and blocks other requests.

[@akashmittal2155]

cluster.schedulingPolicy = cluster.SCHED_RR ; adding this worked for me, don't know why but 'rr' gives out error on my system

[@AnimeEditsMemes]

@@akashmittal2155 yes it's SCHED_RR just used short form rr😮‍💨

[@akashmittal2155]

Bro, any idea on how to change the clustering policy while running pm2 on windows?

[@srl123-u7z]

Thanks

[@redblue17]

@@akashmittal2155 Thanks friend. I literally spent 5+ hrs figuring it. Tried 100+ methods. I thought it is power saving mode fault/ Os fault but every time Os shows 8 processors but never worked..

[@narotamkumarmishra6139]

oh dude each second of this tutorial is so important and beginner friendly, just loved it 😍

[@RaianDexter]

Clear, accurate and useful. Thanks

so good stuff , you cant find these type of good nodejs content outthere , thank you for
your time

[@mykola2173]

Excellent series! Thank you!

[@arnabdas2967]

GOD LEVEL VIDEO ..... salute SIR ..... WAY WAY BETTER THAN UDEMY COURSES

[@mohammedashiq2720]

Outstanding presentation😍. Can understand quicly, Keep going👍

[@Lerndemy]

legend teacher!!

[@ParvizBabakishiyev]

Thanks for the video, I'd like to point out that using workers in the example doesn't actually solve the problem of blocking event loop. Whether you have a single-core process or multiple-core processes you're still blocking the event loop. Worker threads may have been useful here.

[@adehenry9591]

Legendary stuffs Vishwas 👏🏻

[@axelfuzzi1532]

Hermoso tutorial, es todo lo que necesitaba leer

[@odntht]

If you are using Node v18.14.0 or newer version at the NodeJS docs they say to not use 'os.cpus().length' but use 'os.availableParallelism()' instead.

[@ahsanmumtaz2918]

Very nice explanation Vishwas 💌

[@judevector]

I keep learning alot

[@shineLouisShine]

An impressive teaching, ALTHOUGH......
It could have been really impressive if it was completely working.
I run no-cluster.js with pm2 and an identical code as the one in the video-
And while not loading as slow as "/slow-page" - the home page does load quite slower,
Which makes me wonder about the pm2 capabilities (/optimization).

[@thecartoonworld2301]

Amazing Content 🎉

[@coadingwithpandeyji]

i am so gratefull to you even my mentors are secretly studying from you may be can you provide express i dont want to study from them

[@raviwebdeveloper8517]

I have a doubt, like in video 41(Network I/O) you said that network Input/Output opeartions are job of OS kernel,and thread pool does not effect the performance, so in that case why here we are seeing low performance in page requests, wont the OS kernel takes responsibility of the incoming requests

[@sairam-du7ip]

thank you sir 🙏

[@kamgasimojunior5131]

Thanks

[@promiseihunna4714]

Superb.

[@frontend_ko]

thanks teacher 61

[@akshaynitin5589]

I'm confused on this tutorial use case. javascript is single threaded, so we need node.js to act like async communication using libuv. but node will comes under single threaded. it occupied single core of cpu.

[@bibashkatel1090]

How do you manage database connection for each cluster? I tried using middleware and check if the cluster is already connected to database or not and if not then establish the connection but the problem is the initial request would take time and result in time out and if the connection is established as soon as the worker are online then each worker gets connected to the database, this also includes creating indexes operation which in deed would cause more load to the databse. Can you provide a solution for this ?

[@rajajairamrameshbabu7605]

Please make viedo javascript input and output setup in vs code for codeforce competitive programming

[@nermeenghanem4309]

For those who are js, React front-end developers, which track is preferable ; node js or php for starting backend?

[@pooyaestakhry]

I was a PHP developer for years but after starting a react project, choice of PHP as back end caused an extra overhead because of constantly changing programing language that i was working with. at the end i switched to NodeJS and rewrote the PHP code.

[@nermeenghanem4309]

@@pooyaestakhry
How long does it take to study node js and start working with it?

[@pooyaestakhry]

@@nermeenghanem4309 learning is not a one time thing to do and be done with it but in order to start you can just start with one of the tutorials on Node with Express and start from there.

[@demogyani2419]

So far I have observed one thing. After all the things and new implementations everything becomes like PHP😂

[@uncleiroh3616]

The threads work at the same time on a single request. Is it possible to distribute work between threads

[@ctcsys]

Can that be run fully on client side too? Thinking of a client / shared with other clients cluster of JS - only starting in browser - never hit server?

[@thanhpc7749]

I have a question that why the log show `Server is running on port 8000` 2 times but we don't encounter with the error "the address 8000 is already used ..."

[@MayurKasliwal-l7r]

If carefully listen to the lecture, you will get to know that Cluster module creates and run the workers on the same PORT as master node. Hope it answers your question :)

[@krish_techaadimulam2243]

sir,can u tell me how much parts,latest is 61,tell me how many parts r there approximate,pls rply to me sir

[@iamsantoshmallick]

He already mentioned that this is last module may be max to max 10 videos and this course will be over.

[@simple8810]

@@iamsantoshmallick hope he start express next to this series'

[@abdulrazaqharoon2733]

Nodejs is beginnign to scare me, I thought the series would be finished by now. I stopped at 35 waiting for the series to end, its been 2 months now. Scaryyyy!!

[@sanjarcode]

Actually, he's splitting down videos into byte sized chunks. The whole event loop and queues video (10 videos) are mostly taught in one single video.

[@MjCNirdna]

5:22

[@korkut31]

why u strect out every every word at the end of the sentence. do u think that u are speaking a good hearing English ? it is so annoying..

[@mucahtcnar7480]

korkut kapat çeneni adam nodejs ile ilgili derin konseptleri güzel açıklamış takıldığın şeye bak