Consisting of:

• ILogger<>
• ILoggerProvider
• ILoggerFactory
• ILoggingBuilder

Useful for

• Developers only needing to really learn one abstraction in and out
• Frameworks neatly plugging into the abstraction (easy to replace frameworks)

Configuration by default when creating an ASP.NET Core page.

• Dependency Injection pattern
• Clean interface

See here on when to use what log level

Update the minimum log levels for particular categories

Snippet for Console logger to show scopes

"Console": {
    "IncludeScopes": "true"
}

Using the ILogger.BeginScope in the HomeController.Contact action

• Structered Logging
• Implement custom providers
• LoggerMessage pattern
• EventIds