Dabaoshi

Aug 21, 2026 · Backend Development

Concurrency Series Finale: Virtual Threads and Structured Concurrency

The article explains why platform threads are costly, how JDK 21 virtual threads eliminate that cost, and provides practical guidance on creating, using, and debugging virtual threads, including pinning pitfalls, rules against pooling, structured concurrency, ScopedValue, and a detailed model‑selection comparison.