BenXiangYangGuang opened a new issue #2466:
URL: https://github.com/apache/rocketmq/issues/2466


   您好,正在学习 RocketMQ 源码,有几个问题请教一下:
   MappedByteBuffer 和 ByteBuffer 都是堆外内存(直接内存);
   
![image](https://user-images.githubusercontent.com/20946227/100720068-6d160e00-33f8-11eb-891c-a83e3b02755b.png)
   
   ByteBuffer 有内存锁定功能,还有其他区别吗?
   


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