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[TOC]

# BIO通信

阻塞同步的IO

一個請求對應一個線程,1比1

![](https://box.kancloud.cn/31ba131f6c11063a8791d4deb2870f53_1141x416.png)

# 偽異步IO通信

阻塞同步的IO

* 線程池負責連接
* M請求N應答
* 線程池阻塞

![](https://box.kancloud.cn/2463f8a6c1fffd644878ad5124750b37_1221x417.png)

# NIO通信

非阻塞同步的IO

* 緩沖區Buffer
* 通道Channel
* 多路復用器Selector(jdk使用epoll代替傳統select實現)

# AIO通信

真正的異步非阻塞的IO,對應linux的事件驅動IO

* 連接注冊讀寫事件和回調函數
* 讀寫方法異步
* 主動通知程序


                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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