hit_miss.vcl for Varnish 6.0

hit_miss.vcl

# hit_miss.vcl for Varnish 6.0

vcl 4.0;

# What are we, hit, miss, or pass?

sub vcl_recv {
    set req.http.X-status = "NONE";
}

sub vcl_hit {
    set req.http.X-status = "HIT";
}

sub vcl_miss {
    set req.http.X-status = "MISS";
}

sub vcl_pass {
    set req.http.X-status = "PASS";
}

sub vcl_deliver {
    # Cache status
    set resp.http.X-cache = obj.hits + " (" + req.http.X-status + ":" +
        server.identity + ") " + resp.http.X-cache;

    # Other stats
    set resp.http.X-hits = std.integer(resp.http.X-hits, 0) + obj.hits;
    set resp.http.X-ttl = obj.ttl;
    set resp.http.X-grace = obj.grace;
    set resp.http.X-keep = obj.keep;
    set resp.http.X-uncacheable = obj.uncacheable;
}

sub vcl_synth {
    # Cache status
    set resp.http.X-cache = "(SYNTH:" + server.identity + ")";
}