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请问一个PHP+MYSQL 读取数据效率的有关问题

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2016-06-13 12:55:59819browse

请教一个PHP+MYSQL 读取数据效率的问题
我是使用WAMP环境的，用PHP+MYSQL读取数据，为什么第一次要3秒左右，接下来都很快。请问是什么原因呢？


------解决方案--------------------
mysql查询缓存
了解更多，请问google
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