Java Virtual Threads Explained - JEP 444, Project Loom, Performance, and Thread Pinning
Tutor: Andrii Piatakha / Andrey Pyatakha | Learn IT Online University
In this lesson, we will explain virtual threads in modern Java and why Project Loom is one of the most important changes for Java concurrency.
You will learn how virtual threads work, how they differ from platform threads, how the JVM parks and unparks them, where performance benefits appear, and what pitfalls such as blocking I/O, thread pinning, and ThreadLocal usage you should understand.
In this lesson you will learn:
Virtual Threads
Introduction to Virtual Threads and JEP 444
Traditional Java threads and their limitations
Motivation for virtual threads and Project Loom
Virtual threads and carrier threads
How the JVM parks and unparks virtual threads
Virtual threads vs platform threads
Structured concurrency in modern Java
Creating and running virtual threads
Parallel task execution using virtual threads
Performance comparison: virtual threads vs platform threads
Virtual threads with blocking and non-blocking I/O
Native blocking pitfalls and thread pinning
Diagnostic tools: jcmd Thread.pin
Why ThreadLocal is no longer ideal for context
Scoped Values as a modern alternative
Migration strategies for legacy ThreadLocal code
Attachments:
All source code examples from the lesson: https://github.com/AndriiPiatakha/lea...
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