code: public byte[] get(byte[] key){
  		byte[] value = null;
  		Jedis jedis = jedisPool.getResource();
  		try{
  			value = jedis.get(key);
  		}finally{
  			jedisPool.returnResource(jedis);
  		}
  		return value;
  	}
docs: get value from redis
  @param key
  @return