Virtual Threads in JDK-24: The Synchronized Block Breakthrough Explained

Описание: 🚀 Java just got DRAMATICALLY faster with JDK-24's virtual thread improvement! Watch as I demonstrate a real-world application going from 32 seconds to just 0.5 seconds with a simple JDK upgrade.

In this video, I explain one of the most significant improvements in JDK-24: enhanced virtual threads that can now use synchronized methods and blocks without pinning to carrier threads. This seemingly small change has enormous implications for application performance and scalability, especially for code using legacy synchronization.

What you'll learn:
✅ The synchronized keyword in Java and how it works under the hood
✅ The virtual thread pinning problem that limited JDK-21's performance
✅ A clear restaurant analogy that explains the concept in simple terms
✅ Practical demonstrations showing 70x performance improvement
✅ How to enable virtual threads in Spring Boot applications
✅ Real benchmarks showing a Spring app going from 21 seconds to 2.3 seconds

If you're building web applications with high throughput that perform blocking operations like database writes or service calls, virtual threads should definitely be on your radar. This JDK-24 improvement removes one of the biggest barriers to adoption.

Code examples used in this video
Java: https://github.com/danvega/pinning
Spring: https://github.com/danvega/jdk-24-thr...

Chapters:
00:00 Introduction
01:15 Understanding the synchronized keyword
03:20 The virtual thread pinning problem
05:10 The restaurant analogy
07:25 Java example demonstration
10:45 Spring Boot example setup
13:30 Benchmark results
15:20 Why this matters for your applications
16:45 Conclusion

Are you using virtual threads already? Was the pinning issue stopping you from adopting them in JDK-21? Let me know in the comments if you plan to upgrade to JDK-24!

#Java #JDK24 #VirtualThreads #SpringBoot #JavaPerformance #Programming

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