@classmethod
def just_after_fork(cls):
    """
        http://docs.sqlalchemy.org/en/latest/core/pooling.html        #using-connection-pools-with-multiprocessing
        """
    from joker.broker.interfaces.sequel import SQLInterface
    for rb in cls.cached_instances.values():
        for res in rb.resources.values():
            if isinstance(res, SQLInterface):
                res.just_after_fork()
