2 Replies Latest reply on Nov 22, 2007 6:26 PM by 807567

    What is purpose of  "crontab"

    807567
      Hi Community,

      Please answer following questions of mine for my better understanding:

      1. Purpose of crontab?
      2. Differences between App server and Web server?

      Thanks in advance.

      Best Regards,
      Mahesh M
        • 1. Re: What is purpose of  "crontab"
          Perhaps the following can help your understanding.



          1.
          http://en.wikipedia.org/wiki/Crontab


          2.
          http://en.wikipedia.org/wiki/App_server
          http://en.wikipedia.org/wiki/Web_server
          • 2. Re: What is purpose of  "crontab"
            807567
            Here's my super simplified breakdown.

            The crontab is the default scheduler, if you want to say rotate your logs or run backups, at midnight. You would put that in your crontab.

            A web server dishes out the web pages, and may get content from the app server.
            In a typical three tier architecture it goes like this web server, app server, database server.
            The app server has typically an application like webshere, weblogic etc etc. running on it and runs rules/business logic on what the user is doing.