<div dir="ltr"><div>I've written a short blog post on the subject since this seems to come up from time to time.</div><div><br></div><div><a href="https://www.varnish-software.com/blog/404-handling-varnish-cache">https://www.varnish-software.com/blog/404-handling-varnish-cache</a><br>
</div><div><br></div><div>I need to figure out how we'll deal with this in 4.0.</div><div><br></div><div>Per.</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Nov 29, 2013 at 1:24 PM, Per Buer <span dir="ltr"><<a href="mailto:perbu@varnish-software.com" target="_blank">perbu@varnish-software.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div class="im">On Fri, Nov 29, 2013 at 1:15 PM, Jan-Frode Myklebust <span dir="ltr"><<a href="mailto:janfrode@tanso.net" target="_blank">janfrode@tanso.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>On Fri, Nov 29, 2013 at 09:06:15AM +0100, Per Buer wrote:<br>
> ><br>
> > @per, you suggested saint mode. Why? What would it do better than Tobias'<br>
> > solution?<br>
><br>
> Saint mode works if you have two backends in the same director. Then it<br>
> blacklists that object from that backend for a certain time. A restart<br>
> would then direct the request to the other backend.<br>
><br>
> Tobias solution is to have two backends. The other one is only used when<br>
> the first one fails.<br>
><br>
<br>
</div>Ideally we want both. Our two hosts in the director are fully<br>
functional, but one of them might not have received a given file yet. So<br>
we want to try the other backend in the director, not mark it as faulty<br>
when it gets the 404.<br></blockquote><div><br></div></div><div>I'm pretty sure you didn't read my reply properly. :-P<br><br></div><div>Note that the blacklist is temporary. If you know that you spend up to five seconds updating your server you set it to 5s.</div>
<div><br></div></div><div class="im"><div><br></div>-- <br><div dir="ltr"><div style="color:rgb(34,34,34);font-size:12.727272033691406px;font-family:arial,sans-serif;margin:5px 15px 0px 0px;padding-bottom:5px">
<table border="0" cellpadding="0" cellspacing="0" style="text-align:start;font-size:12px;line-height:1.5em;font-family:'Helvetica Neue',Arial,sans-serif;color:rgb(102,102,102);width:550px;border-top-width:1px;border-top-style:solid;border-top-color:rgb(238,238,238);border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);margin-top:20px;padding-top:5px;padding-bottom:5px">
<tbody><tr><td width="100" style="font-family:arial,sans-serif;margin:0px"><a href="http://www.varnish-software.com/" style="color:rgb(17,85,204)" target="_blank"><img src="http://www.varnish-software.com/static/media/logo-email.png" style="float:left;margin-left:10px"></a></td>
<td style="font-family:arial,sans-serif;margin:0px"><b style="font-size:14px;color:rgb(34,34,34)">Per Buer</b><br>CTO | Varnish Software AS<br>Phone: <a href="tel:%2B47%20958%2039%20117" value="+4795839117" target="_blank">+47 958 39 117</a> | Skype: per.buer<br>
<span style="font-weight:bold">We Make Websites Fly!<br>
<br></span><span style="font-family:'Helvetica Neue',Arial,sans-serif;font-size:14px;font-weight:bold">Winner of the Red Herring Top 100 Europe Award 2013<br></span><p style="margin:0px;line-height:normal;font-family:Helvetica">
<img src="https://www.varnish-software.com/sites/default/files/redherring_2013_winner_sml.jpg"></p><span style="font-weight:bold"><br></span></td></tr></tbody></table><div></div></div><div style="clear:both;color:rgb(34,34,34);font-size:12.727272033691406px;font-family:arial,sans-serif;margin:15px 0px">
</div></div>
</div></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><div style="font-size:12.727272033691406px;margin:5px 15px 0px 0px;padding-bottom:5px;color:rgb(34,34,34);font-family:arial,sans-serif;background-color:rgb(255,255,255)">
<table border="0" cellpadding="0" cellspacing="0" style="text-align:start;font-size:12px;line-height:1.5em;font-family:'Helvetica Neue',Arial,sans-serif;color:rgb(102,102,102);width:550px;border-top-width:1px;border-top-style:solid;border-top-color:rgb(238,238,238);border-bottom-width:1px;border-bottom-style:solid;border-bottom-color:rgb(238,238,238);margin-top:20px;padding-top:5px;padding-bottom:5px">
<tbody><tr><td width="100" style="font-family:arial,sans-serif;margin:0px"><a href="http://www.varnish-software.com/" style="color:rgb(17,85,204)" target="_blank"><img src="http://www.varnish-software.com/static/media/logo-email.png" style="float:left;margin-left:10px"></a></td>
<td style="font-family:arial,sans-serif;margin:0px"><b style="font-size:14px;color:rgb(34,34,34)">Per Buer</b><br>CTO | Varnish Software AS<br>Phone: +47 958 39 117 | Skype: per.buer<br><span style="font-weight:bold">We Make Websites Fly!<br>
<br></span><span style="font-family:'Helvetica Neue',Arial,sans-serif;font-size:14px;font-weight:bold">Winner of the Red Herring Top 100 Europe Award 2013<br></span><p style="margin:0px;line-height:normal;font-family:Helvetica">
<img src="https://www.varnish-software.com/sites/default/files/redherring_2013_winner_sml.jpg"></p><span style="font-weight:bold"><br></span></td></tr></tbody></table><div></div></div><div style="font-size:12.727272033691406px;margin:15px 0px;clear:both;color:rgb(34,34,34);font-family:arial,sans-serif;background-color:rgb(255,255,255)">
</div></div>
</div>