My Varnish VCL for WordPress
April 5th, 2009
On Varnish’s official website, there is a WordPress optimization guide For The Impatient: Preparing Varnish/Wordpress for a Slashdotting in 60 seconds or less….
The problem is that it removes cookie too aggressively. All non admin page will be virtually static. So I made my own vcl to remove cookies for only static files.
Here it is
backend default { .host = "10.25.0.1"; .port = "80"; } sub vcl_recv { # Normalize Content-Encoding if (req.http.Accept-Encoding) { if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|lzma|tbz)(\?.*|)$") { remove req.http.Accept-Encoding; } elsif (req.http.Accept-Encoding ~ "gzip") { set req.http.Accept-Encoding = "gzip"; } elsif (req.http.Accept-Encoding ~ "deflate") { set req.http.Accept-Encoding = "deflate"; } else { remove req.http.Accept-Encoding; } } # Remove cookies and query string for real static files if (req.url ~ "^/[^?]+\.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.*|)$") { unset req.http.cookie; set req.url = regsub(req.url, "\?.*$", ""); } # Remove cookies from front page if (req.url ~ "^/$") { unset req.http.cookie; } } sub vcl_fetch { if (req.url ~ "^/$") { unset obj.http.set-cookie; } }
So all interactive pages will be sent to php backend with correct cookies. All static files and front page will be served by varnish proxy.
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