Structured Concurrency in Action

Key Takeaways

• How virtual threads enable the thread-per-task programming model while scaling to large numbers of concurrent tasks.
• Understanding the principles of structured concurrency and how it simplifies concurrent application design.
• Using Java's StructuredTaskScope to manage concurrent subtasks, results, errors, and timeouts.
• How structured concurrency improves readability, maintainability, and correctness compared to traditional concurrency approaches.
• Building applications where concurrent workflows naturally compose across multiple layers without explicit coordination.

Target Audience

• Software developers interested in modern concurrency patterns in Java.
• Architects looking to build scalable applications while maintaining clean and understandable code.
• Java developers who want hands-on experience with virtual threads and structured concurrency.

Requirements

• Proficiency in Java 8 or later.
• Basic understanding of concurrent programming concepts.
• A laptop with Git, Java 25, Maven, and a preferred editor or IDE installed.
• A GitHub account.

Schedule

Workshop Plan

Introduction to Modern Java Concurrency (20 min)

• Challenges of traditional thread management.
• Why Java introduced virtual threads.
• Understanding the thread-per-task model.

Working with Virtual Threads (35 min)

• Creating and managing virtual threads.
• Comparing platform threads and virtual threads.
• Exploring scalability and performance considerations.

Structured Concurrency in Practice (45 min)

• Principles and benefits of structured concurrency.
• Using StructuredTaskScope to coordinate concurrent work.
• Managing results, failures, cancellations, and timeouts.
• Hands-on exercises with concurrent workflows.

Composition Patterns and Real-World Applications (15 min)

• Composing concurrent tasks across application layers.
• Common patterns and anti-patterns.
• Applying structured concurrency in production systems.

Wrap-up and Q&A (5 min)