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  • Tomcat Policies and Best Practices
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Logging

  • Logging should not be set to DEBUG in Production unless necessary to solve a specific problem.
  • Logging should be directed to a log file specific to the application. This log file should have a name that starts with the name of the application, e.g. if your application is called dml, the log file should be dml.log or dml-something.log.
  • Log statements that go to System.out and end up in catalina.out should be avoided.
  • Logging Exceptions
    • When using log4j, ensure that stack traces are included in logged exceptions by using the Logger.error(Object message, Throwable t) method.
    • Don't log exceptions that are caught and handled properly

Questions

The DailyRollingFileAppender is nice because you can easily find historical information in logs, but could we set up a cron job to zip up and archive all old log files?

Should we use log files for stastistics generation, or implement another method?

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