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                            ### 特性比較
*   悲觀鎖適合寫操作多的場景，先加鎖可以保證寫操作時數據正確。
*   樂觀鎖適合讀操作多的場景，不加鎖的特點能夠使其讀操作的性能大幅提升
![](https://img.kancloud.cn/7f/a2/7fa201274d7e195190cd0d5a53052653_1080x832.png)

樂觀鎖和悲觀鎖的調用方式示例：
![](https://img.kancloud.cn/72/a6/72a60146a14295039492cfe15af7e9ce_1080x354.png)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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