Structured concurrency is a match for virtual threads, which is a lightweight implementation of threads provided by the JDK. A preview of virtual threads is planned for Java 19 this September.

The Java 11 and Java 21 codes are available on the SimpleVirtualThreads repository with instructions to run the comparison in both Java 11 and Java 21 containers. Putting it all together: Virtual ...

Virtual threads take the responsibility for allocating system resources out of your application code and into the JVM. Here's a first look at virtual threads in Java 21.

JDK 21's virtual threads are a major leap forward for Java's concurrency model. Previously, Java relied on OS threads, which were resource-heavy, limiting how many threads could run concurrently.