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有效的目录结构(Efficient Directory Structure)

大量文件的最佳目录结构是什么? 考虑到我有超过2000万的文件使用number_id作为文件名(例如13842985.xml)。

如果会与类似的东西

filename : 13842985.xml
directory :  1/3/8/13842985.xml

我怎样才能正确地做到这一点,其中所有文件均匀分散在每个目录和子目录中。


What would be the best directory structure for a massive amount of file. Considering i have more than 20 million of files using number_id as file names (ex. 13842985.xml).

if would go with something like

filename : 13842985.xml
directory :  1/3/8/13842985.xml

How can i do this properly wherein all files are scattered evenly on each directories and subdirectories.


原文:https://stackoverflow.com/questions/6295409
更新时间:2022-02-24 20:02

最满意答案

这里是regexp和replace函数的函数,在第一次将func的名称作为变量传递,在第二次 - 你的函数params

 function addParams(funcStr, paramsArrayToAdd){
   var isFirstCall = false;
   return funcStr.replace(/[^\)\(]+/g,function(str){
      if(!isFirstCall){
        isFirstCall = true;
        return str;
      }else{
        return str.length > 0 ? str + "," + paramsArrayToAdd.join(",") : paramsArrayToAdd.join(",");
      }
   });
}

使用示例

    var str = addParams("AddMoreRowsWithNo('SnapIII_btnEquipmentAddMore', 'SnapIII_TBLAdditionalEquipment', 'SnapIII_trAdditionalEquipment', 'SnapIII_tdEquipmentNo')",["'param1'","'param2'"])
    console.log(str);//AddMoreRowsWithNo('SnapIII_btnEquipmentAddMore', 'SnapIII_TBLAdditionalEquipment', 'SnapIII_trAdditionalEquipment', 'SnapIII_tdEquipmentNo','param1','param2')

Here is function with regexp and replace function, in first time will pass name of func as variable, in second time - your func params

 function addParams(funcStr, paramsArrayToAdd){
   var isFirstCall = false;
   return funcStr.replace(/[^\)\(]+/g,function(str){
      if(!isFirstCall){
        isFirstCall = true;
        return str;
      }else{
        return str.length > 0 ? str + "," + paramsArrayToAdd.join(",") : paramsArrayToAdd.join(",");
      }
   });
}

Example of use

    var str = addParams("AddMoreRowsWithNo('SnapIII_btnEquipmentAddMore', 'SnapIII_TBLAdditionalEquipment', 'SnapIII_trAdditionalEquipment', 'SnapIII_tdEquipmentNo')",["'param1'","'param2'"])
    console.log(str);//AddMoreRowsWithNo('SnapIII_btnEquipmentAddMore', 'SnapIII_TBLAdditionalEquipment', 'SnapIII_trAdditionalEquipment', 'SnapIII_tdEquipmentNo','param1','param2')

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