Varnish config for django

Varnish config for django

# Default backend definition.  Set this to point to your content
# server.
#
backend web {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {

    # unless sessionid is in the request, don't pass ANY cookies (referral_source, utm, etc)
    if (req.request == "GET" && (req.url ~ "^/(static|media)" || (req.http.cookie !~ "sessionid" ) ) ) {
        remove req.http.Cookie;
    }

    # normalize accept-encoding to account for different browsers
    # see: https://www.varnish-cache.org/trac/wiki/VCLExampleNormalizeAcceptEncoding
    if (req.http.Accept-Encoding) {
        if (req.http.Accept-Encoding ~ "gzip") {
            set req.http.Accept-Encoding = "gzip";
        } elsif (req.http.Accept-Encoding ~ "deflate") {
            set req.http.Accept-Encoding = "deflate";
        } else {
            # unknown algorithm
            remove req.http.Accept-Encoding;
        }
    }
}

sub vcl_fetch {

    set beresp.http.X-Backend = beresp.backend.name;
    set beresp.ttl = 15m;

    # static files always cached
    if (req.url ~ "^/(static|media)") {
       unset beresp.http.set-cookie;
       set beresp.ttl = 24 h;
       return (deliver);
    }
    
    # pass through for anything with a session/csrftoken set
    if (beresp.http.set-cookie ~ "sessionid") {
       return (hit_for_pass);
    } else {
       return (deliver);
    }
}