sqlalchemy: TimeoutError: QueuePool limit of size 5 overflow 10 reached, connection timed out, timeout 30
mysql建立的连接要及时删除，不然连接池资源耗尽相关文章参考：http://blog.csdn.net/robinson1988/article/details/4713294http://blog.itpub.net/9399028/viewspace-682415/http://blog.csdn.net/u01...
