WPCOM_VIP_Cache_Manager::purge_site_cache PHP Method

    public function purge_site_cache($when = null)
    {
        if ($this->site_cache_purged) {
            return;
        }
        $this->ban_urls[] = untrailingslashit(home_url()) . '/(?!wp\\-content\\/uploads\\/).*';
        $this->site_cache_purged = true;
        return;
    }