Kafka

Posted 2020-10-08 Mr.Ming2

 

KafkaProducer

Kafka消息发布客户端。

线程安全，跨线程共享单个生产者实例通常比拥有多个实例的速度更快。

例子，使用生产者发送包含序列号的字符串作为键/值对的记录：

Properties props = new Properties();
 props.put("bootstrap.servers", "localhost:9092");
 props.put("acks", "all");
 props.put("retries", 0);
 props.put("batch.size", 16384);
 props.put("linger.ms", 1);
 props.put("buffer.memory", 33554432);
 props.put("key.serializer", "org.apache.kafka.common.serialization.StringSerializer");
 props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");

 Producer<String, String> producer = new KafkaProducer<>(props);
 for (int i = 0; i < 100; i++)
     producer.send(new ProducerRecord<String, String>("my-topic", Integer.toString(i), Integer.toString(i)));

 producer.close();