Verwalten von Off-Heap Direct-ByteBuffers im Prototype-Bean-Lebenszyklus

@Component
@Scope(ConfigurableBeanFactory.SCOPE_PROTOTYPE)
public class DirectMemoryBufferPool implements DisposableBean {
 
    private ByteBuffer offHeapBuffer;
 
    public void initializeBuffer(int capacityBytes) {
        this.offHeapBuffer = ByteBuffer.allocateDirect(capacityBytes);
    }
 
    public ByteBuffer acquireBuffer() {
        return this.offHeapBuffer.duplicate();
    }
 
    @Override
    public void destroy() {
        if (this.offHeapBuffer != null && this.offHeapBuffer.isDirect()) {
            this.offHeapBuffer.clear();
            this.offHeapBuffer = null;
        }
    }
}