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<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'>First, some good news: after a few fits, starts, and
configuration tweaks, we’ve succeeded in deploying BackgrounDRb onto our
production machines, where we’re using itto perform cache expiration on
our Rails generated pages. [We’re using v1.0.1 code at the moment, but
plan to upgrade to 1.0.3 in the next week or two.] We use an event driven model
for expiration, which is triggered by observers in our Rails application.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'>However, we’re concerned about robustness, and would
like to set up some monitoring tools. In particular, we’d like to keep
tabs on things like:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'><o:p> </o:p></span></font></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='mso-list:l0 level1 lfo1'><font size=2 face=Georgia><span
style='font-size:10.0pt;font-family:Georgia'>total number of threads
allocated<o:p></o:p></span></font></li>
<li class=MsoNormal style='mso-list:l0 level1 lfo1'><font size=2 face=Georgia><span
style='font-size:10.0pt;font-family:Georgia'>number of active worker
threads<o:p></o:p></span></font></li>
<li class=MsoNormal style='mso-list:l0 level1 lfo1'><font size=2 face=Georgia><span
style='font-size:10.0pt;font-family:Georgia'>duration of currently active
threads (to help identify hung ones)<o:p></o:p></span></font></li>
</ul>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'>Are there any good examples of monitor workers that do
this now? What sort of statistics API’s are available? I didn’t see
anything obvious in the RDoc for this.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'>George<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Georgia><span style='font-size:10.0pt;
font-family:Georgia'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><img width=228 height=60 id="_x0000_i1025"
src="cid:image001.jpg@01C86FB4.81631590" align=baseline border=0><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span style='font-size:7.5pt;
font-family:Arial'>George Feil | Senior Software Engineer</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=1 face=Arial><span style='font-size:7.5pt;
font-family:Arial'>office 415.295.8524 | fax 415.295.8580</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=1 face=Arial><span style='font-size:7.5pt;
font-family:Arial'>www.realgirlsmedia.com</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=1 face=Arial><span style='font-size:7.5pt;
font-family:Arial'>www.divinecaroline.com</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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