docs: def commit(self, session):
          """Commit phase for session.
  
          :param session: sqlalchemy session
          """
          sp_key, sp_hkey = self._keygen(session)
          with self.r.pipeline(transaction=False) as p:
              p.srem(sp_key, session.meepo_unique_id)
              p.expire(sp_hkey, 60 * 60)
              p.execute()