What are spinlocks?

Most locks are busy only for small amount of time. Instead of going into a wait-state, more often its more efficient for the thread to simply try few times to acquire the lock. This concept is called SpinLocks or spinning.

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Master difficult programming concepts in few minutes. I try to explain difficult concepts like Java concurrency in simple to understand manner. Explore videos on topics like Spring Boot, Cloud Foundry, Java 8 and more. I am happy to clarify your doubts. Ask me anything in the comments. Also happy to take requests for new videos.

New video added every Sunday.

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[tillapudisudhakar]

This is the most effective explanation, Thanks a lot for detailed explanation.

[emmanuel]

after googling so much, finally found this video which explained the concept to the point. Nice explanation.

[divyangshah]

What an eye opener!! This concept is so deep

[LivenLove]

Hi Thanks for your video, these have helped me a lot in clearing my doubts about concurrency and multithreading. I request you to post videos on how to use parallel streams and completable futures using some sample problem statements.

[sharanyarai]

Great video again... Can you summarize all different options to handle concurrency in a video for same use case? talking abt plus and minus of each options like synchronized keyword, read write lock, spin lock, future, webflux etc. That will give us overall picture.

[patchipulusunaresh]

You are very good at explaining the concept deep into the mind. Keep it up. 👍👏

[ritugupta]

Thanks for creating so good content and sharing with us.!

[sanjaykantheti]

Hi Deepak, can you explain spin locks through a programmatic example.

[umeshpatnaik]

Hi .. Thanks for the video ... What also we can do is we can use tryLock for quick IO available in Reenterant Lock and keep looking for the flag in a while loop , once its try true we can acquire the lock .. Let me know if I am wrong .

[bsyaswanth]

Actually the explanation is great but got confused. So If I understood properly, the same lock works in two different ways. I mean once after lock is acquired if a thread takes time to do the work then the other thread will wait for unlock() to be called else if first thread takes less time the other thread will not go to wait state and keeps on trying again ?

[muthuselvamrajamanoharan]

Another Great Video! I recommend your videos to my friends and colleagues.

[i_m_gdv]

can you post a video explaining CLH lock ?

[suryanarayansubudhi]

Hi

your videos are really helpful to me.
Please make videos on consumer and producer problem of multi threading.

[OlliS]

Linus Torvalds: Never use spinlocks in userspace.