def get_group_key(request, group, prefix='hacl', suffix=None):
    """
    @Linked to `lru_wrapped`
    :param request:
    :param group:
    :param prefix:
    :param suffix:
    :return:
    """
    if suffix is None:
        suffix = ''
    return '{prefix}:site_{site_id}:group_{group_id}{suffix}'.format(prefix
        =prefix, site_id=request.site.id, group_id=group.id, suffix=suffix)
