在示例程序中，总是用4k的缓冲区读取事件数据。
In the sample program, event data is always read with a buffer of 4k.
该缓冲区缓存原本需要从磁盘读取的JMS消息数据。
This buffer caches JMS message data that may otherwise need to be read from disk.
数据可以直接从读取缓冲区传输到套接字缓冲区。
Instead, the data could be transferred directly from the read buffer to the socket buffer.
数据可以直接从读取缓冲区传输到套接字缓冲区。
Instead, the data could be transferred directly from the read buffer to the socket buffer.
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