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## 關鍵字查詢
基于分詞構建了一個索引結構：
![](https://gitee.com/cowboy2014/cloud2020-config/raw/master/pictures/20211205095351.png)

- term dictionary即分詞字典，維護了每個分詞對應到的行主鍵的記錄；
- term index，是在term dictionary的基礎上通過前綴再次進行了索引；Term Index 可以配合壓縮技術，直接緩存在內存中；
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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