Log Levels in .NET

Effective logging is crucial for monitoring and troubleshooting applications.

• Trace:

Trace logs are detailed and may include sensitive data. They are disabled by default and should remain off in production.

• Debug:

Debug logs are used for interactive investigation during development, useful for troubleshooting, and have no long-term value.

• Information:

Information logs track the general flow of the application and should have long-term value.

• Warning:

Warning logs highlight abnormal events in the application flow without stopping execution.

• Error:

Error logs indicate when execution halts due to a failure in the current activity, not an application-wide issue.

• Critical:

Critical logs report unrecoverable crashes or catastrophic failures needing immediate attention.

The log levels are ordered by severity.