I recently changed the server and reinstalled the system. I don’t know if there is an incorrect configuration problem. When accessing mysql to query several large pages, it will hang, as shown below. What may be the reason? 
曾经蜡笔没有小新2017-05-25 15:10:16
The request has timed out, please use ajax asynchronous request instead.
淡淡烟草味2017-05-25 15:10:16
According to your question, the query when accessing MySQL is relatively large. What does large mean? Is it a large amount of query data or a large number of query tables? If so, it is recommended that you optimize the query efficiency first and then see the effect.
