ttrowell

// Set or replace $regex_path_match accordingly.
    if ((preg_match($regex_path_match, $_SERVER['REQUEST_URI'])) {
      drupal_page_is_cacheable(FALSE);  //<--- Bypass Drupal too
      $conf['page_cache_maximum_age'] = 0;
    }

ttrowell

<?php
// Move the WP Native Sessions plugin to the mu-plugins directory and add this file: 
require_once(dirname(__FILE__).'/wp-native-php-sessions/pantheon-sessions.php');