https://devops-monk.com/tags/virtual-threads/Recent content in Virtual-Threads on Devops MonkHugoen-usSun, 03 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-boot/spring-boot-async-virtual-threads/Sun, 03 May 2026 00:00:00 +0000https://devops-monk.com/tutorials/spring-boot/spring-boot-async-virtual-threads/Not every operation needs to complete before the response returns. Sending an email, generating a report, publishing an event — these can run in the background. Async processing keeps request latency low while the work continues. @Async — Fire and Forget @SpringBootApplication @EnableAsync public class OrderServiceApplication { } @Service @Slf4j public class NotificationService { @Async // runs in a separate thread public void sendOrderConfirmation(Order order) { log.info("Sending confirmation for order {}", order.https://devops-monk.com/2026/05/spring-boot-virtual-threads/Sun, 03 May 2026 00:00:00 +0000https://devops-monk.com/2026/05/spring-boot-virtual-threads/Virtual Threads landed in Java 21 as a stable feature, and Spring Boot 3.2 added first-class support with a single property. The promise: write simple blocking code and get WebFlux-level throughput. The reality is mostly true — with some important exceptions. This article covers what Virtual Threads actually are, how to enable them in Spring Boot, real benchmark numbers, the three pitfalls that will silently destroy your performance, and a decision framework for when to use them (and when not to).