Handle 1,000,000 Threads with Java and Spring Boot !!!

Spring Boot Virtual Threads | Java Virtual Threads In-depth Tutorial

Master Spring Boot Virtual Threads: Dive Into Java Virtual Threads Tutorial

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[vamseevery]

4:10 - bro there will be waiting time if all the threads are CPU bounded and not I/O bounded. Even if they are I/O bounded there will be waiting time.

[rajumurugesan]

Nice comparison between executor service and virtual threads.

[yugandharreddynalabolu]

I have done data migration from one system to another system by transferring 10 lakhs documents along with metadata recently using fixed thread pool service with 8 threads. I am hearing this virtual threads first time and good thing learned from you. Thank you so much for this video. Appreciating you

[JoshuaSamuel]

Nice demo!

only thing that I think might be better explained, is that OS can create thousands of threads limited by memory, and then will schedule those OS threads to context switch between the cores or hardware threads (if multithreading) using concurrency.

This just makes it seem like you are saying there will only be 8 OS threads available on 8 cores.


OS threads would be another level of threads using software/memory.

Cores would just be what is truly happening in parallel at the lowest level (CPU).

8 core CPU with hyper threading

- 8 physical threads running truly in parallel

-16 logical threads that OS uses since each core has 2 hardware threads that the OS can schedule on.

- 1000s of threads created at OS level depending on Memory and needs by processes/programs

- OS threads are expensive and require about 1-20MB of memory to create. About 1ms to create and is slower to context switch between the threads than virtual.

- virtual threads 1000x cheaper in terms of memory needed. JVM can create millions (again depending on memory and needs) of virtual threads that share the OS threads by rotating when CPU processing is needed.

- with web server, you would need to create 1 OS thread per request and use 20 MB of memory to do so. You can quickly run out of memory, and it also takes more time to create manage OS threads.

- virtual threads allows for server to handle more concurrent requests with less memory and virtual threads are much faster to create, improving throughout to web server, but would not improve processing for an individual request.

[shashanksingh]

What are the drawbacks ? How will this perform under load ? Can it potentially fill up the heap ?

[thirue]

Thank you . Good explanation with examples. What are all the impacts while handling transaction management?

[sumanthmuttuvalli]

Easy Explanation, Watched many videos to Understand Virtual Threads This video made me clear about it. Thank you so much 🙏 .

[matrixlnmi]

Abhee accha say mutache bhee aaya hai..but knowledge confidence level is awesome. 👍

[santuc]

Nicely explained and I will definitely encourage to my team members to start implementing this. While we are already using Reactive Programing, is there any additional benefits VT will yield on top of what we have?

[abhinavkumar]

Awesome explanation!!
Please make a video on multithreading!

[phanikumar]

Very simple and easy to understand. good effort to share your knowledge.
Which video editor you are using, its very cool and impressive.

[tribhuvannarain]

Very helpful video. can you create a video covering completable future with multithreading using virtual threads? I know that you briefly touched upon it in this video. A detailed video will be very helpful.

[apackes]

You enabled virtual thread in team-app but how player-bloc is able to handle 32 requests at a time?

[VenkateshM-wr]

We enabled virtual threads in first service only which in turn making call to second service where virtual threads is not enabled so how did it work?

[sahu]

Very good explaination.

Springboot framework will also have some threads runnig concurrently. does that also leverage power of Virtua threads?

[djricky]

Ciao! Io ho un notebook con cpu intel 2 core 4 threads, quando lavoro con il pc virtuale rallenta! Ho 16gb di RAM DDR3. Con questo metodo di virtual thraed riesco a velocizzare?. Translate to Italian and English

[avalagum]

At the beginning of the video: a machine with a 4-core cpu has only 4 (or 8) threads? I think that there's a misunderstanding of cpu thread and os thread.

[harikishore]

I do not want this used for all the app level only for few blockers then is there any possibility

[ehson]

Articulation to Execution and demonstration, Full marks!!

[KAPILKUMAR-pque]

Please bring a full tutorial on executor for virtual thread and so we can implement in some real project