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          合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。
          廣告
        
                        
                
  

                

                
    
                
        
                
                            # 走入并行的世界
## 這該死的并行
![](https://img.kancloud.cn/eb/fd/ebfd68c4f1fbcb9413a343730c51ea41_830x586.png)
## 摩爾定律發展
![](https://img.kancloud.cn/c6/0e/c60ee819484ee37be57337bb9a774105_828x532.png)
## 一些基本概念
### 同步 vs 異步
![](https://img.kancloud.cn/1f/6b/1f6b6b7715bedf58de6453cb6cb063e3_790x490.png)
### 并發 vs 并行
![](https://img.kancloud.cn/51/b5/51b580274d520b0edefb3f35ff73c380_788x492.png)
### 臨界區
多個線程的公共資源，或者說共享數據。
### 阻塞 vs 非阻塞
![](https://img.kancloud.cn/76/8d/768dcc4627a978f17cde43cf9ab2e824_788x494.png)
### 死鎖、饑餓、活鎖
![](https://img.kancloud.cn/11/ee/11ee29fb6f48f43fbeb13a1c1855526b_790x492.png)
## 并發級別
![](https://img.kancloud.cn/ff/ae/ffae428750960027d55dfdc2a889ff19_1618x1182.png)
## 并行加速比公式
![](https://img.kancloud.cn/ec/c4/ecc450af6fffb4c68be0a3114e9d8de9_1054x416.png)

## 參考文檔
* 書籍：葛一鳴 *《Java高并發程序設計第二版》

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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