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2.2 Metaspace, Direct ByteBuffers & Off-Heap Memory
Topic Summary
Master Metaspace class metadata storage, Direct ByteBuffers, and off-heap zero-copy I/O.
What You Will Learn
• Differentiate Java Heap vs Native Metaspace.
• Configure `-XX:MaxMetaspaceSize` to prevent container out-of-memory kills.
• Use `ByteBuffer.allocateDirect()` for high-throughput zero-copy I/O.
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