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工程师基本常识
source link: https://juejin.im/post/5cc699b4f265da03761e9614
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异步IO （异步输入输出） 异步传输存在一个潜在的问题，即接收方并不知道数据会在什么时候到达。在它检测到数据并做出响应之前，第一个比特已经过去了。这就像有人出乎意料地从后面走上来跟你说话，而你没来得及反应过来，漏掉了最前面的几个词。因此，每次异步传输的信息都以
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