Logging

Logging can be used to help debug a bug in our program. Operating systems log various information such as access to resources, what an application is doing, the overall health of the system, and much more. It is not doing this because there is an error; rather, it is logging to make it easier for the system administrator to determine what is going on with the operating system at various times. It allows for easier debugging when the operating system acts in an unusual way or performs a certain task that was not expected. This is the same attitude we should take when logging our application. We need to think about the information that we gather and how that would help us to debug the application if something is not performing the way we think it should.

We should be performing logging regardless of whether the program needs debugging. Logging is useful for understanding events that happen, the health of the application, any potential issues, and who is accessing our application...