0x1306e6d/spring-boot-virtual-threads

Spring Boot enabling virtual threads

spring-boot-virtual-threads

Spring Boot enabling virtual threads

Enable virtual threads

You can enable virtual threads by setting the property spring.threads.virtual.enabled to true.

Check virtual threads

You can check virtual threads by the name of the current Thread serving the HelloController.

$ curl http://localhost:8080/hello
Hello, world! by tomcat-handler-0

$ curl http://localhost:8080/hello
Hello, world! by tomcat-handler-1

$ curl http://localhost:8080/hello
Hello, world! by tomcat-handler-2

$ curl http://localhost:8080/hello
Hello, world! by tomcat-handler-3

Tomcat's VirtualThreadExecutor creates virtual threads on every request. This is as same as:

final OfVirtual threadBuilder = Thread.ofVirtual().name("tomcat-handler-", 0);
// on every request
threadBuilder.start(command);