问题描述
在将对象写入网络时，Netty是否提供任何方法来避免缓冲区复制?根据我的理解，在其Channel.write(Object)中，使该对象通过编码器(该编码器返回ChannelBuffer副本).基本上，这意味着我最终为每条消息创建一个缓冲区副本，最终创建了大量的短期缓冲区对象
Does Netty provide any way for me to avoid buffer copying when I am writing objects to network ? In its Channel.write(Object) , in my understanding, this object is made to pass through encoders ( which return ChannelBuffer copies ). This basically means for each message I end up creating a buffer copy , eventually creating large number of short lived buffer objects
Netty可以为我提供一个可重复使用的ChannelBuffer，我用字节填充它并将这些字节直接写到网络上吗?
Can Netty provide me with a reusable ChannelBuffer that I fill up with bytes and it writes these bytes to network directly ?
推荐答案
Netty已经回收了缓冲区，您无需担心.
Netty already recycles buffers, you don't need to care about this.
此外，编码器/解码器只是您自己编写的编码器，Netty仅能处理 ChannelBuffer 对象，如果您将ChannelBuffer写入您的通道中，那么它周围就没有魔法了，它的内容是直接写到输出中.
Also, the encoders/decoders are only the ones you wrote yourself, Netty can only handle ChannelBuffer objects, if you are writing a ChannelBuffer to your channel there is no magic around it, it's contents are written directly to the output.
您可以(并且应该)做的事情是创建与缓冲区大小完全相同的缓冲区，以免在向缓冲区加载数据时分配动态缓冲区.
What you can (and should) do is to create buffers of the exact size you need to avoid allocation of dynamic buffers when you are loading the buffer with data.
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