code: public boolean set(long index, Object newValue) {
  		try {
  			boolean result = false;
  			if (isCluster(groupName)) {
  				result = getBinaryJedisClusterCommands(groupName).lset(keyBytes, index, valueSerialize(newValue))
  						.equals(RESP_OK);
  			} else {
  				result = getBinaryJedisCommands(groupName).lset(keyBytes, index, valueSerialize(newValue)).equals(RESP_OK);
  			}
  			return result;
  		} finally {
  			getJedisProvider(groupName).release();
  		}
  	}
docs: 设置指定位置的值
  
  @param index
  @param newValue
  @return