gistfile1.c

import std;

backend default { .host = "app1.rubydoc.org"; .port = "8080"; }

acl purge {
  "localhost";
  "app1.rubydoc.org"; // and the backend server
}

sub vcl_recv {
  // We don't need no cookies
  unset req.http.Cookie;

  if (req.url ~ "process=true") {
    return (pass); // don't cache process pages
  }

  if (req.request == "PURGE") {
    if (!client.ip ~ purge) {
      error 405 "Not allowed.";
    }
    ban_url("^" + req.http.x-path);
    error 200 "Purged.";
  }
}

sub vcl_hash {
  hash_data(regsub(req.url, "(\?|&)_=.+$", ""));
  return (hash);
}

sub vcl_fetch {
//  if (beresp.status >= 500) {
//    set beresp.saintmode = 10s;
  if (beresp.status != 200 || beresp.http.cache-control ~ "max-age=0") {
    //set beresp.ttl = 3s;
    //set beresp.saintmode = 3s;
    return (hit_for_pass); // no cache on non-200s
  } else {
    // one year cache
    set beresp.ttl = 365d;
  }
  return (deliver);
}