Once one has a logging and tracing setup using log4net in place for ASP.NET Web API, what are the specific aspects that need to be logged and/or traced?
I am asking this specifically from Web API perspective. Is there a series of MUST Log this or MUST trace this. Like, INFO traces about a controller's request, any NULL checks, etc.
Is there a reference list that can be validated against to ensure optimum logging and tracing coverage in ASP.NET Web API ?