Unverified50% confidenceFactExact time
Compact Object Headers is an optimization in the JDK that reduces object metadata overhead; its predecessor is Project Lilliput from the OpenJDK community, with the goal of compressing object headers on 64-bit JVMs from 128 bits (16 bytes) to 64 bits (8 bytes).
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50%
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Long-term
Relevance
9/5/2026
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