php连接多个db，超时的问题
RT，现在我有多个库，有些还在不同物理机上，每个库中有个相同的表，现在需要查询每个库同一个表的数据集中显示，请问如何解决这个问题？
现在我用的方法是每个DB都建立连接，查询后再输出页面，上千个DB的情况下速度很慢，而且也没会出现504超时的情况，求教-0-，在线等！！
回复讨论(解决方案)
远程连接的数据库总是很慢的，你可以尝试改用支持分布式数据库的数据库服务
比如 oracle、sql server
项目中用的是mysql，由于产品已经对外，暂时没法动到这些了。。没有更好的办法解决这种问题了吗
不同物理机上，还上千个DB， 这肯定会慢，你可以将首次查询的结果缓存起来，之后查询就可以从缓存中获取。
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