vcl 4.1;

backend default {
    .host = "${backend_host}";
    .port = "${backend_port}";
}

sub vcl_recv {
    if (req.url == "/" || req.url == "/health") {
        return (pass);
    }

    if (req.method != "GET" && req.method != "HEAD") {
        return (pass);
    }

    return (hash);
}

sub vcl_backend_response {
    set beresp.ttl = 1h;
}

sub vcl_deliver {
    if (obj.hits > 0) {
        set resp.http.X-Cache = "HIT";
    } else {
        set resp.http.X-Cache = "MISS";
    }
}