Logger Internals

1. Log File: This is the file to which the log is output.
   
   
2. File Maintenance Strategy: This shows a roll-over file maintenance strategy.
   
   
3. Log Level: This shows the level at which log statements are output to the log file.
   Logger levels usually have the following order:
   
   1. TRACE,
   2. DEBUG,
   3. INFO,
   4. WARN,
   5. ERROR and
   6. FATAL
   
   It is possible to specify a minimum and maximum level between which the logs will be generated.