is the connection closed?
```
[2018-09-03 15:57:10] [pool:152] [DEBUG] Connection 140187317752720 was stale, closing.
[2018-09-03 15:57:10] [peewee:2612] [DEBUG] close <socket.socket fd=4, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('192.168.2.99', 46786), raddr=('192.168.3.78', 3306)> 
[2018-09-03 15:57:10] [pool:135] [DEBUG] No connection available in pool.
[2018-09-03 15:57:10] [peewee:3391] [DEBUG] open <socket.socket fd=4, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('192.168.2.99', 46790), raddr=('192.168.3.78', 3306)>
[2018-09-03 15:57:10] [pool:166] [DEBUG] Created new connection 140187317752720.
```
the ids are the same, does that mean that the connection is not closed?
