public Set<String> getByPrefix(String key) {

        Set<String> setResult = new HashSet<>();

        try {

            ShardedJedis jedis  = redisDataSource.getJedisClient();

            Iterator<Jedis> jedisIterator = jedis.getAllShards().iterator();

            while(jedisIterator.hasNext()){

                setResult = jedisIterator.next().keys(key+"*");

            }

        } catch (Exception e) {

            logger.error(e.getMessage(), e);

        }

        return setResult;

    }