When the log level is set to Error, which other log level messages are also included in the logs?

When the log level is set to Error, the system captures not only error messages but also those classified as Critical. The Critical log level typically represents severe issues that may cause the application to terminate or significantly impact its functionality, making it important to be logged alongside Errors.

In a structured logging system, each log level usually encompasses its designated messages and all levels that are considered more severe. Since Critical represents the most serious issues, it is included in Error-level logging to ensure that developers and administrators are aware of critical failures as they troubleshoot and maintain the application.

On the other hand, Warning, Info, and Debug messages are generally less severe than Error messages and are not logged when the log level is restricted to Error, hence they do not appear in the logs at this setting. This approach minimizes noise in the logs, allowing for a focused review of significant problems.