varnish-simple.vcl

backend default {
    .host = "127.0.0.2";
    .port = "80";
}

sub vcl_recv {
    set req.backend = default;
    return(lookup);
}

sub vcl_miss {
    return(fetch);
}

sub vcl_hit {
    return(deliver);
}

sub vcl_fetch {
    if (obj.status != 200 && obj.status != 403 && obj.status != 404 && obj.status != 301 && obj.status != 302) {
           restart;
    }

    set beresp.ttl = 24h;
    set beresp.http.X-Cacheable = "YES";
    unset beresp.http.Vary;
    return(deliver);
}

sub vcl_deliver {
    return(deliver);
}