java

Java 21 virtual thread pinned on synchronized block

VirtualThread.*pinned.*synchronized

Fixes

1.Replace synchronized with ReentrantLock
2.Use java.util.concurrent locks that support virtual threads
3.Run with -Djdk.tracePinnedThreads=full to identify pinning locations

java-21virtual-threads

Related Errors

Spring Boot bean not found in application context

NoSuchBeanDefinitionException.*No qualifying bean of type

•Add @Component/@Service/@Repository annotation to the class
•Ensure the package is scanned: check @ComponentScan or @SpringBootApplication basePackages

Spring circular dependency during bean creation

BeanCurrentlyInCreationException.*Requested bean is currently in creation

•Use @Lazy annotation on one of the circular dependencies
•Refactor to break the circular dependency with an event or interface

Spring Boot unsatisfied dependency injection

UnsatisfiedDependencyException.*Error creating bean with name

•Verify the required bean exists and is properly annotated
•Use @Qualifier to disambiguate when multiple beans of same type exist