[info:Application started]
[debug:Loading configuration from /etc/app/config.yaml]
[info:Database connection established]
[error:Failed to connect to cache server: timeout]
[warn:Retrying cache connection (attempt 1/3)]
[info:Cache connection successful]
Some random line without a log level
[debug:Loading user preferences]
[info:User authentication successful for user: admin]
Another unmatched line for variety
