ESP8266 GET method error
It should be 

String model = "GET /kanbanDB/arduino?model=1 HTTP/1.1\r\n";
model+="Host: 192.168.1.9\r\n\r\n";


remove Serial.println("\r\n\r\n"); before Serial.println(model); it is send before GET line

Serial.println("AT+CIPSTART=\"TCP\",\"192.168.1.9\",8000");
String model = "GET /kanbanDB/arduino?model=1 HTTP/1.1\r\n";
model+= "Host: 192.168.1.9\r\n\r\n";
Serial.print("AT+CIPSEND=");
Serial.println(model.length());
delay(1000);
Serial.print(model);
delay(1000);


EDIT:
Remove debug prints to Serial or use SoftwareSerial to connect the esp8266 to Uno. Now the debug prints are sent to esp8266 mixed with AT commands and data. For SoftwareSerial change the default baud rate of the AT firmware.