def push_cache_card_id(card_id, openid, card_unique_id):
val = redis_client.get('%s_%s_card' % (card_id, openid))
tmp = JSONDecoder().decode(val) if val else []
tmp.append(card_unique_id)
val = JSONEncoder().encode(tmp)
redis_client.set('%s_%s_card' % (card_id, openid), val, 120)
