def should_regenerate(self, response):
        """ Check if this page was originally generated less than LOCAL_POSTCHECK seconds ago """

        if response.has_header('Last-Modified'):
            last_modified = parse_http_date(response['Last-Modified'])
            next_regen = last_modified + settings.BETTERCACHE_LOCAL_POSTCHECK
            return time.time() > next_regen
Check if this page was originally generated less than LOCAL_POSTCHECK seconds ago