Modern Concurrency in Java by A N M Bazlur Rahman
“Knowing how to use something is important, but understanding how it works is essential.”
— A. N. M. Bazlur Rahman
Do you really know how threads work in Java?
And how about Virtual Threads, the game-changing feature introduced in Java 21?
Concurrency in Java has come a long way since the early days of Thread and ExecutorService. With the arrival of Virtual Threads, Structured Concurrency, and Scoped Values, the language is embracing a new era of simplicity and scalability.
But these new tools also come with questions every developer should be able to answer:
🧩 What’s the difference between a Platform Thread and a Virtual Thread?
🚫 What is Thread Pinning, and why can it be a performance problem?
♾️ What exactly is a Daemon Thread?
🧵 How do Structured Concurrency and Scoped Values make multithreading safer and easier?
In his new book, Modern Concurrency in Java: Virtual Threads, Structured Concurrency, and Beyond, released in 2025, Bazlur Rahman dives deep into all these topics.
It’s not just theory; the book is packed with practical examples, clear explanations, and real-world guidance for building high-performance, maintainable concurrent systems.
If you’re not yet using Virtual Threads (or have only heard about them), you’re missing out on one of the biggest evolutions in Java in decades.
As Bazlur wisely recommends:
“By embracing virtual threads, you can simplify and make your concurrency more coherent, significantly improving your applications’ performance and scalability, resulting in cleaner and easier-to-maintain code.”
— A. N. M. Bazlur Rahman
📚 Why this book matters
Modern Concurrency is not just about learning new APIs, it’s about rethinking how we design and reason about concurrent applications in Java.
Whether you’re preparing for the future of Java or optimizing your current systems, this book is a must-read.
The book is available on Amazon.com Modern Concurrency in Java: Virtual Threads, Structured Concurrency, and Beyond.