7 The problem with threads - Spring Boot Microservices Level 2

Learn how threads work in a web server. Here's a quick primer and the context to understanding availability issues with microservices.

[SchkuenteQoostewin]

Off topic, I love how you use your lips and have strengthen your vocal cords. A clear and strong voice is a delight to listen to thus learn from

[bismibarakath]

Good explanation. I have been watching your videos since 2010. Thanks

[josephpudupermanil]

Awesome Explanation. Great Koshik. Thanks to Java Bains.

[dnyaneshtathode]

Awesome Blossom explanation Kosuh. Love you !

[deepakkakkar]

That's cool video, clearly explained the concept which i was always confused every time. Thanks.

[arjun]

hello sir i love you tutorial and the way you explain

[prashantchaudhary]

great video, like ur face as it shows experience and dedication 👏

[krishnakishore]

Thanks for the explanation, One question : A and B are microservices and by principle they should run independently . Are we discussing the UI orchestration layer (Website calling both A and B to full-fill a transaction ) that is accessed by user?

[abdelghanikadouri]

what if the services are running in different servers, is that service still gonna be affected by the one that is slow ?

[omkarmanjrekar]

If the service is doing more I/O and less computation, we will have a lot many threads (hopefully green threads). The thread would just sleep during the http request (the I/o). And in case of reactive servlets, this probably isn't a problem at all. Please let me know if my understanding is correct.

[MrDipakDash]

How to make a spring bean thread safe?

[HemalathaElangovan]

Could you also tell how to find out how many threads/requests can one server handle? Is there any tool or calculation for that?

[indexOutOfBound]

@JavaBrains What will happen if instead of using Rest templates to call the services we use web client? Will the issue still persist as rest templates are synchronous calls and they wait for the response but web clients are asynchronous.

[kamallochanpadhi]

How to handle 10000 requests per second in springboot rest api ?

[anujagrawal]

Please create a video of indepth video on tomcat architecture

[tejassalvi]

Please help me this dobt
I have an API which takes Employee ID
In its service layer I'm calling 3 different external API and for this i have used multithreading by creating 3 threads to do this task.
Now suppose my API is called concurrently by 100s of users how will the flow will
i.e One thread per request and then having 3 threads internally doing the process
OR One thread per request but bcoz of 3 threads in my service layer waiting for the thread to complete the task ?

[manish.adhikari]

Sir, if service A and service B are running on different servers, then could you please let me know how the latency in the response of service B effects the service A operation? In this case only the thread pool of the webserver hosting service B is consumed, while webserver hosting service A has still many threads idle in its thread pool.

[knikhil]

Can this issue be overcome by maintaining multiple instances, where one instance reached its max no.of threads and the new requests will goto second web server instance to fulfill the requests without waiting on first web server instance?

[kumargaurav]

I am confused Catalog service will be one thread calling both the service. On the Catalog service.. both services are being called sequentially and are not processed by same thread.
How will ratings data service become slow?

[sarwarkamal]

If microservices A and microservice B runs in different web server( and different container), ideally it is supposed to be, then there will be no impact of slowness of B on A, right?