MYSQL里面插入500万条数据,最优的方式插入
表结构比较简单id ,name,area,sex,lasttime. innodb collate=utf8_general_ci
------解决方案--------------------
处理成 csv 格式的文件
用 LOAD DATA INFILE 指令加载
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什么样的文件还是采集的?
------解决方案--------------------
BigDump
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------解决方案--------------------
你可以先将索引删掉,导入完成后再重建。

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Dependency injection (DI) significantly improves the testability of PHP code by explicitly transitive dependencies. 1) DI decoupling classes and specific implementations make testing and maintenance more flexible. 2) Among the three types, the constructor injects explicit expression dependencies to keep the state consistent. 3) Use DI containers to manage complex dependencies to improve code quality and development efficiency.

DatabasequeryoptimizationinPHPinvolvesseveralstrategiestoenhanceperformance.1)Selectonlynecessarycolumnstoreducedatatransfer.2)Useindexingtospeedupdataretrieval.3)Implementquerycachingtostoreresultsoffrequentqueries.4)Utilizepreparedstatementsforeffi


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