Tested in Varnish 4
This is a example of configuration that you can use for caching wordpress:
sub vcl_recv {
## GENERAL CONFIG ##
# Normalize host header
set req.http.Host = regsub(req.http.Host, ":[0-9]+", "");
# Normalize Accept-Encoding header and compression
if (req.http.Accept-Encoding) {
# Do no compress compressed files...
if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") {
unset req.http.Accept-Encoding;
} elsif (req.http.Accept-Encoding ~ "gzip") {
set req.http.Accept-Encoding = "gzip";
} elsif (req.http.Accept-Encoding ~ "deflate") {
set req.http.Accept-Encoding = "deflate";
} else {
unset req.http.Accept-Encoding;
}
}
# Remove # at the end of URL
if (req.url ~ "\#") {
set req.url = regsub(req.url, "\#.*$", "");
}
# Remove ? at the end of URL
if (req.url ~ "\?$") {
set req.url = regsub(req.url, "\?$", "");
}
# Remove cookies with blanks
if (req.http.cookie ~ "^\s*$") {
unset req.http.cookie;
}
# Remove cookies for several extensions
if (req.url ~ "\.(css|js|png|gif|jp(e)?g|swf|ico)") {
unset req.http.cookie;
}
# Remove cookies with only spaces
if (req.http.cookie ~ "^ *$") {
unset req.http.cookie;
}
# Don't cache POST request
if (req.http.Authorization || req.method == "POST") {
return (pass);
}
## WORDPRESS SPECIFIC CONFIG ##
# Don't cache the RSS feed
if (req.url ~ "/feed") {
return (pass);
}
# Don't cache admin/login
if (req.url ~ "/wp-(login|admin)") {
return (pass);
}
# Don't cache WooCommerce
if (req.url ~ "/(cart|my-account|checkout|addons|/?add-to-cart=)") {
return (pass);
}
# Don't cache searchs
if ( req.url ~ "\?s=" ){
return (pass);
}
# Remove several cookies
set req.http.Cookie = regsuball(req.http.Cookie, "has_js=[^;]+(; )?", "");
set req.http.Cookie = regsuball(req.http.Cookie, "__utm.=[^;]+(; )?", "");
set req.http.Cookie = regsuball(req.http.Cookie, "__qc.=[^;]+(; )?", "");
set req.http.Cookie = regsuball(req.http.Cookie, "wp-settings-1=[^;]+(; )?", "");
set req.http.Cookie = regsuball(req.http.Cookie, "wp-settings-time-1=[^;]+(; )?", "");
set req.http.Cookie = regsuball(req.http.Cookie, "wordpress_test_cookie=[^;]+(; )?", "");
# Don't cache wordpress-specific items
if (req.http.Cookie ~ "wordpress_" || req.http.Cookie ~ "comment_") {
return (pass);
}
## RETURN ##
# Cache the rest
return (hash);
}