MySQL has a feature called the query cache that stores the result of a query in memory, should it be needed again.
MySQL有一个特性称为查询缓存，它将（后面会用到的）查询结果保存在内存中。
MySQL has a feature called the query cache that stores the result of a query in memory, should it be needed again.
MySQL有一个特性称为查询缓存，它将（后面会用到的）查询结果保存在内存中。
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