JDK 27 G1/Parallel/Serial GC Changes
Summary
OpenJDK 27 introduces significant stop-the-world GC changes across G1, Parallel, and Serial collectors, including making G1 the default in all environments and notable refactorings like Atomic<T> usage. The post breaks down bug fixes, behavior changes, and new features affecting memory management and GC tuning, with notes on JEP 401 and practical implications for JVM performance.