我已经暴露了一个Kafka节点和一个主题名。我的web服务器接收到大量http请求数据，我需要对它们进行处理，然后将它们推送到kafka。有时，如果kafka节点关闭了，那么我的服务器仍然不断地传输数据，这会导致我的内存崩溃，服务器也会关闭。
如果Kafka倒下了，我想停止发布数据。我的java示例代码如下：

static Producer producer;

  Produce() {
    Properties properties = new Properties();
    properties.put("request.required.acks","1");
    properties.put("bootstrap.servers","localhost:9092,localhost:9093,localhost:9094");
    properties.put("enabled","true");
    properties.put("value.serializer","org.apache.kafka.common.serialization.StringSerializer");
    properties.put("kafka-topic","pixel-server");
    properties.put("batch.size","1000");
    properties.put("producer.type","async");
    properties.put("key.serializer","org.apache.kafka.common.serialization.StringSerializer");
    producer = new KafkaProducer<String, String>(properties);
  }

  public static void main(String[] args) {
    Produce produce = new Produce();

    produce.send(producer, "pixel-server", "Some time");

  }

  //This method is called lot of times
  public void send(Producer<String, String> producer, String topic, String data) {
    ProducerRecord<String, String> producerRecord = new ProducerRecord<>(topic, data);
    Future<RecordMetadata> response = producer.send(producerRecord, (metadata, exception) -> {
      if (null != exception) {
        exception.printStackTrace();
      } else {
        System.out.println("Done");
      }
    });

我刚刚抽象出一些示例代码。send方法被多次调用。我只是不想在Kafka倒下的时候发任何信息。解决这种情况的有效方法是什么。