Java Tech Workshop

Jul 24, 2026 · Backend Development

SpringBoot + Virtual Threads: Turning a Small Gun into a Cannon for IO‑Intensive Services

The article explains how most SpringBoot bottlenecks stem from IO blocking rather than CPU limits, and shows that enabling JDK 21 virtual threads with SpringBoot 3.2+ can boost IO‑bound throughput by 3‑5× while cutting memory usage over 60%, backed by detailed benchmark data and practical guidance.