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Date: Thu, 14 Jun 2012 11:50:50 +0400
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 <CABzHfVnCV0RNC0g7XfO=8W-jJJE+a4ZPVDBrOQQ6U7VYuOEmQA@mail.gmail.com>
Subject: Re: wget and Tomcat resources
From: Konstantin Kolinko <knst.kolinko@gmail.com>
To: Tomcat Users List <users@tomcat.apache.org>
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2012/6/14 Miguel Gonz=E1lez Casta=F1os <miguel_3_gonzalez@yahoo.es>:
> Dear all,
>
> =A0Our developer has set a cronjob similar to this:
>
> =A0wget -T 0 http://ourserver.com/email_sender
>
> =A0which calls a javabean to check pending emails to send in a database a=
nd
> actually send them.
>
> =A0I'm concerned about this, since I have realized that we have peaks of =
500
> http connections per minute exactly about the same time this cronjob runs=
.
> I'm just wondering if this cronjob is performing several retries (since i=
t
> sets a 0 timeout) and count as http hits.
>
> =A0This increase of http hits (not related to people connecting since peo=
ple
> connect in office hours and this happens early morning) is happening
> together with an increase of use of memory.

1. Configure your AccessLogValve to print "User-Agent" header of the
request (%{User-Agent}i ). This way you will know what requests come
from wget and how fast they are served by Tomcat.

2. Make sure that the page contacted by wget does not use sessions. If
each request creates a new session it would be a waste of resources.
You can include session id into AccessLogValve configuration: %S

Best regards,
Konstantin Kolinko

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