The default installation of Varnish 3 on Debian-based system (including Ubuntu) will set a default timeout for sending files to users (i.e. for users files download) to 60 seconds. To change this limit, it is necessary to update your default Varnish configuration, in /etc/default/varnish. For example, if you have something like this: DAEMON_OPTS=”-a :80 […]
If you’re using Varnish cache, you will be familiar with the “service varnish restart” then the “oh, there’s a config error and now all my sites are down!”. Fear no more: there’s a command to check your Varnish syntax before you restart. Just run: $ varnishd -Cf /etc/varnish/default.vcl And it will tell you what’s wrong […]
I had serious problems with a Drupal website with many Varnish optimizations. It so occurs that one of them, a return(lookup) on images and css extensions, was really the one causing the problem: if (req.url ~ “.(png|jpg|jpeg|swf|css|ico)”) { return(lookup); } Now I don’t remember precisely why I added this condition in the first place (lookup […]
Just a self-reminder, in the vcl_recv section (before sending request to the backend), check the url you want to always serve from cache and tell it to return(lookup); if (req.url ~ “request_server.php$”) { return(lookup); } Reload Varnish and get ready for a massive fall of your load if this bloody request_server.php was overloading your […]
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