@Override
    protected void writeInt32LE(int value) throws IOException {
        ensureCapacity(4);
        int position = nioBuffer.position();
        UnsafeDirectBufferUtil.setIntLE(address(position), value);
        BufferUtils.position(nioBuffer, position + 4);
    }
Start address of the memory buffer The memory buffer should be non-movable, which normally means that is is allocated
off-heap
jraft-rheakv/rheakv-core/src/main/java/com/alipay/sofa/jraft/rhea/serialization/impl/protostuff/io/UnsafeNioBufOutput.java