Asynchronous vs Multithreading and Multiprocessing Programming (The Main Difference)
In this video, I explain the main difference between asynchronous execution, multithreading and multiprocessing programming. There are advantages and disadvantages of each approach.
* Synchronous 0:30
* Multithreading a process have many threads shared resources 3:20
* Async io single thread 6:00
* Multiprocessing 11:00
Threads are evil
web.stanford.edu/~ouster/cgi-...
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Stay Awesome,
Hussein
Get my Fundamentals of Networking for Effective Backends udemy course Head to network.husseinnasser.com for a discount coupon (link redirects to udemy with coupon applied)
Man you should start a podcast for this stuff, just put some of it on spotify for us to listen to it in the background. You are so good at explaining these things in such a casual way that you are kinda having a conversation rather then just explaining, thats a real skill. Would love some of this on spotify to listen to while just cleaning up and stuff.
Him: does anyone even print stuff these days The books behind him: ...
You got me
You probably dont care at all but does anyone know of a trick to get back into an Instagram account..? I was dumb forgot the password. I would appreciate any assistance you can give me!
@@ahmedmalakai9753 If u still did not get back to ur account, it is as simple as clicking forget the password and that will send an email to ur gmail and then create new one for that instagram account !
@@hacker64xfn99 dude probably forgot his youtube account as well lol
This is what they always told me at work, understand the basics, understand the basic.. and here I am always ended up getting confused in basic. And back to ur channel to relearn all those things
I loved this explanation! You might consider doing a podcast when you just chill by yourself or with a guest and start off from some technical subject but treat it casually and with lots of everyday examples, just like you did in this clip. New sub from me and keep it up! :D
dreamer ❤️ thank you for the suggestion ! Appreciate it and welcome to the channel!
@@hnasr Glad to be a member of this community!
@Hussein Nasser I would love to know your opinion about goroutines (Golang) and erlang process
I don't think anybody can explain it in a more better way . Thank you
I clicked the thumb up button after I watched the whole video, and I ended up given all video I've been watched a thumb up in this channel, thank you Hussein!
jiaojie wei thumbs up to you dear 👍 and much love ❤️ thanks for your comments glad you enjoyed the content
I love your explanations and as someone who is trying to become a backend engineer, I think your channel is a gold mine of useful information. Keep up with awesome videos!
I just realized you've got a ps2 on the background, so many good memories of that console
Clear and concise explanation, proof that we don't need beautiful architecture drawings when concepts are clear.
Loved this video, the last half of this video could definitely make a great series on ways to use multiprocessing!
First time I felt myself laughing at a programming tutorial/explanation. Thank you for this video!
Thanks to the geniuses who made coding so easier for us newbies in the 21st century. Imagine, having to code back in the 70's or 80's, with no software like VS Code that can color code your text, auto complete lines of code, spin up the compiler/interpreter with just a click of a button, handles the communication with the OS, does syntax error check, etc. All we have to do is just know how to and what to code.
The systems we build now are much more complex 😉
@@hellowill aah yes the code monkeys making another useles webapp
Love all your videos, specially about soft skills and motivation one. There are times when I get lost and watching these videos again put me on track and keep going.
This is great man, I like your style of teaching! I kind of revise this topic once in a while and I'm going to bookmark this video so I revisit it later on.
Hussein the way you express yourself echoing in my mind. I like your passion and professional attitude which are seen rarely together man. True engineer
Thank you Mustafa for the kind words dear ❤️
You're a really good teacher. I admire your talent sir!
The most amazing, funny, useful. programming information video without coding I have ever seen until now. Amazing brother.
Great video, as usual. To summarize: if your app is "i/o bound" (e.g. reading data from a db, and sending it back) then use the asynchronous model (like NodeJS). If you are doing something "cpu bound" (e.g. video processing or cracking passwords) then use something supports subprocesses and channels (like golang).
What do you mean by "and sending it back"? Unlike in real life, data can be in two places at once, so there's no need to send anything back
Hey Hussain, Thanks for clearing all the doubts and great explanation, absolutely loved it♥️ especially the event loop 🙂
Like to see u have very less subscriber, but still u r no bother about it.. u just share very unique knowledge on this channel. Which i have never find on other channel. Thank You, keep continue. sharing is caring.
multithreading languages tend to solve the problem by introducing reactive programming, Java did this after the community introduced some technologies like RxJava. and it is very power to combine both in the language echo system. however hard to perceive from the first glance. Great video buddy, all my wishes to you.. keep up bro
Ahmed Daraz thanks Ahmed for the insights! Well said
This was really helpful, informative and to the point. Thanks !
excellent approach & good humor to explain complex topics in a simpler way.
Man, I love the enthusiasm you bring to the field!
This dude rocks. He talks in a way I can understand, and he's not boring.
Very informative and intuitive explanation! Thanks so much
This was a good watch. I think I see single-threaded async behavior differently now. I am now also very interested in process interop now. Most of all, I have a weird urge to try working with multiple asynchronous single-threads at the same time.....
Amazing explanation. Really cleared a lot of doubts.
I just can't stop watching your videos man .... Keep them coming !
Thanks! Enjoy 😊
Thanks Hussein for this content. Keep the good work going.....
i'm thankful to the people who suffered through callback hell
loved the explanation - simple and concise
You are such an amazing teacher!!!! I actually kind of understand this now, thanks so much!😍
جزاك الله خيرا ❤️ Thanks
Well, The best explanation I see in my whole life, till today
Amazing video, finally i learned this topic.
This explanation was something else..... Thanks man!!!!!
Thank you very much Hussein, that was a clear explanation.
This is hilarious! Please make a podcast - i'd love to wake up to you talking about any programming related topic haha XD
❤️ anchor.fm/hnasr
I love your explanations! Excellent food for thoughts.
Keep up the great work, man!
I guess proxies interest you more than anything (They come up at least once in every video of yours) !!!..Btw, I am a fan, and Thank you for the great content
I agree, multithreading is hard to code but it's worth doing especially if you combine it with asynchronous execution you will have the most responsive, memory-efficient application I'll go with multiprocessing only when execute a rarely use case with heavy logic
Very nice explanation! Thank you for this video!
Good Explanation！Finally understand these concept quick and good.
Excellant explanation, very engaging and concise!
Fantastic explanation. I sense some nginx prior tinkering which got you into this stuff. If you take a deep dive on the read modes async io, direct-io your audience will get much more value. Bravo and keep them coming.
this is the first time I smiled the whole way through a technical video :)
Great intuitive explanation !
Nice explanation man, You have 1 new subscriber 👍👍👍
Best explanations ever.
Wow, buddy, it is an amazing explanation. You are awesome!
Thanks so much for this video tutorial.
As usual fantastic video Hussein but in multi-processing we have to go with IPCs and the like and we will lose the shared memory space (which exists in multi-threading) among the threads. That is one key need in problems that involve high real-time update-rate. I see what you are saying about the locks and all the headache that comes with them and you nailed it there.
Well said Thanks Osama, good points, one slight addition; you can have shared memory between different processes (postgres is an example) of course you have the same trouble of managing the shared memory
@@hnasr you got it right Mr. I usually go with Redis for more or less and have all my global "shared" variables there. If you are aware of faster alternatives, I am all in. Thx again.
@@hnasr what do you think of green-threads used in Go and all the collaborative scheduling that comes with them. I am planning on taking a deep dive there once we deliver the current project.
Not familiar with Go but heard really good things how Go was built for networking and threading in mind to make it really easy
@@hnasr There is one fantastic talk i recall watching I guess in 2018, it is called the "way of Go" or the "why of Go", highly recommended.
Thanks Nasser. Just getting my feet wet with programming, python, turbo_flask, and threading. I appreciate your explanation.
Amazing as always ❤
Thank you for this video!
welp i just got addicted to this channel i guess
Amazing explanation !!!
Awesome video, thanks man.
Best teacher.
thank you so much for this good explanation
Very very good explanation, congratulations!
Thanks for creating amazing content..✨
I think you can mix asynchronous and multiprocessing. I did something like that with fastapi using asynchronous functions and a Procfile with different microservices running on different ports
عظمة كل عام وانتم بخير يا هندسة
Great explanation 👌🏼
Nice explanation !!
GREAT TUTORIAL! thank you
I love to watch your videos, they are very informative. You could start a facebook group or slack group and ask people to join it.
Good video, I've a question about processing. let's say I've a node js code that sends some processing intensive calculation to another language for example python, will it run on another thread?
So good explaination ❤️
Very good explanation.. Don't know why so less thumbs-up
smooth explanation .. 5 star
Great explanation sir. I like the idea of multiprocessing !!! though never used :p
A technical Craig Ferguson! Loved it.
best explanation!
One of the best explanations i have ever seen on these concepts... I have a doubt sir, sorry this seems like a silly question but how does Node.js use multicores in CPU as it is single threaded? ...does it use only one core 😅?
Your videos are super great! But I prefer the one with graphics and drawings, because I can understand and memorize better informations
Lahdili Zuhir thanks! I agree with you too. I am experimenting with different formats. And i want mix both drawing and talking head 🗣👍
Yes exactly
@@hnasr Even Khan Academy style drawings are good or even basic white board. I feel when things are explained with visuals and the key points are written down then it's easier to absorb the information
Hey Hussein, great talk! and thank you for the detailed basics which actually I missed learning (I guess I was on leave on those classes :D) Is multiprocessing possible in NodeJS ? and how?
cluster i guess
@Hussein Nasser I would love to know your opinion about Golang (goroutines) and Erlang ( process ), and about node I think that it is a master - workers model the master is the app thread and workers are those who do the job behind the scenes. Thank u for the video
Super explanation!
David A.
Imagine him being your mentor! Freakn amazing,
Hey Bro. I've been following your videos to understand the basic concepts of Infrastructure and your explanation is amazing, and I have a couple of questions for you if you would like it to clarify for me. In synchronous communication, you mention that when a single process starts, it has a single thread that it uses to trigger the instructions and just wait there for the data but the same thread can be used to spin up multiple threads to execute other processes and get the results but at the backend, they use the same threaded. So it's like a highway tunnel for all other shortcuts and every thread is getting different results and passing back the result in the highway to the processes. Our main thread is not blocked as multiple results are coming back and we are executing the multiple processes over a single thread. I think it's not as evil as you think it is as it is also a form of asynchronous transmission. We are not letting our thread sit idle but rather triggering multiple processes over a single channel and waiting for the callback and the thread is busy working for other processes. Isn't this the same idea behind asynchronicity? if yes, then how we do differentiate between asynchronous and a multi-threaded process as both use the same single thread? Of-course the method is different for both but at the core, isn't both are using the same principles? I would really love your feedback over this and correct me if I am wrong about it as this is how I understood your multi-threading explanation.
He sort of explains that the motivation for async in a language like JavaScript is to provide similar functionality to multi-threading without forcing the coder to be responsible for ensuring the resources that the multi-threaded process share are used correctly. This makes developing responsive UIs much easier as developers don't have to think about multiple threads, just the single thread and managing async calls. I think there are some helpful illustrations in this video kzhead.info/sun/otCSlMZoe5Z9p4U/bejne.html&pp=gAQBiAQB If you read through the comments there's a great explanation on multiple threads trying to access the same memory that is allocated to the parent process. It essentially says that a process is allocated a set amount of memory (in simple terms basically think of it as an array). If multiple threads happen to try to write data to the same index in that 'array' of memory (because the programmer was not clever enough to avoid this) you now have unpredictable/unsafe behavior for the rest of the execution of the process because one thread is expecting one value and the other is expecting a different value. There are certainly other real-world use cases for multi-threaded applications, they seem to be related to much lower-level programming (lower meaning closer to the hardware)
i suspect that some implementations of async & await use multithreading. nice video
Wow amazing content and very entertainment. Thank you very much
Nice video! Greeting from Costa Rica
amazing yar...
Amazing stuff
Sir you are amazing...
Any recommendation for good resources about the operating systems.
Hahaha the asynchronous unordered list on the 15 first seconds, nice touch 😂
So... going with your recommendation of multiprocessing... how do you accomplish that in C#? do you have a video on that?
Thanks!
Use mixing of Multiprocessing and Async. It will be useful
Now I understand clearly why we use async and await thanks :) but i am using python instead of javascript and the technology is FastAPI it is pretty fast closer to Node js :D
Great content! However, not sure if we could say event loop > multi threading. Is it possible to have the performance advantage of multi threading (parallel processing) in event loop based approach? Golang is known for its multi threading.
I think with Nodejs clustering you could achieve this. run an event loop on each thread of the CPU as a child node
Salam, i think mixing both is good. I like both multi threaded + asynchronous.. i dont like big event loops or when language doesn't really support await thingy you have to invent your own or bring some library which im not fan of doing so
I did it.... Syntactical sugar😂😂... I love your explanation man.... We are the new generation where we don't write multithreading or async code, we IMPORT libraries to do it for us😂✌️
so can we make any code asynchronus or mulithreading or it depends on the language or i did not understand whatever u said?