Logging in .NET

Benefit of structured logging?

• Log data can be query

• Faster logging

• Less code

• Easy to debug

What is the standard logging library in .NET?

• Microsoft.Extension.Logging

• System.Extension.Logging

• System.Logging

• Microsoft.Logging

What can Serilog be used in a .NET application?

• Log provider for MEL

• A Logging framework

• Library to store data to File

• A Frontend UI module

What is the purpose of an enricher in Serilog?

• Updating properties from logevent

• Removing properties from logevent

• Adding properties to logevent

• Deleting properties from logevent

What is the purpose of sinks?

• Nothing

• Enrich logevent with new properties

• Writing log events to storage in various format

• Filter logevent before writing to storage

When do you want to config a sublogger in Serilog?

WriteTo.Logger()

• Log properties sent to another sinks should differ

• When you want to write to database

• When you want to write to a custom sink

• You should not config sublogger

When can LogEvent from Microsoft namespace get logged to Console?

• level == Information

• level >= Information

• level >= Warning

• level > Warning

.Filter.ByExcluding(le => Matching.FromSource("System")(le) && le.Level <= LogEventLevel.Information)

Can logevent with SourceContext = 'System.*' get logged with that filter?

• Always

• Never

• Only when level > Information

• Only when level <= Information