Definition
Structured concurrency is a programming model where subtasks are bound to parent task lifetimes, ensuring cancellation propagates correctly and preventing orphaned async work. In Java, JEP 533 (Structured Concurrency) provides preview APIs for coordinating concurrent subtasks.
Key Points
- JDK 27: Seventh preview of JEP 533 — not yet stable API
- Complements virtual threads (Project Loom) for scalable server-side async patterns
- Enterprise migration requires preview-feature flags; production adoption awaits finalization