Java 25 integrates Compact Object Headers as a product feature through JEP 519, offering developers a potential 30% CPU reduction and significant memory savings without requiring any code changes. The ...

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But how many developers understand how HashMap works internally? A few days ago, I read a lot of the source code for ...

OpenJDK proposal to reduce the Java object header by half or more would lower memory and CPU usage on all Java workloads. Java could get a smaller object header, thus improving memory usage, under a ...