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Virtual Threads

1 painsavg 7.0/10
compatibility 1

Virtual Thread Pinning Blocks Scalability in Legacy Code

7

Virtual threads introduced in JDK 21 suffer from pinning when using synchronized blocks or certain I/O operations, destroying scalability benefits especially in large codebases with idiomatic Java patterns. Migration from platform threads required architectural changes rather than simple runtime decisions.

compatibilityJavaVirtual ThreadsProject Loom