问题一：
"connection closed"是说连接断了，再下一行说“socket connection established".我重新启动又告诉我“another instance of uWSGI is runing on the same address.
感觉connection closed了就用socket connection代替，在后台运行的就是socket connection.不知道这样理解对不对。
有没有大神分析一下原来的connection和现在的socket connection有啥异同？