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Producing Messages

Pragya Keshap answered on February 11, 2023 Popularity 1/10 Helpfulness 1/10

answer Producing Messages

Producing Messages

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To create messages, we first need to configure a ProducerFactory. This sets the strategy for creating Kafka Producer instances.

Then we need a KafkaTemplate, which wraps a Producer instance and provides convenience methods for sending messages to Kafka topics.

Producer instances are thread safe. So, using a single instance throughout an application context will give higher performance. Consequently, KakfaTemplate instances are also thread safe, and use of one instance is recommended.

@Configuration
public class KafkaProducerConfig {

    @Bean
    public ProducerFactory<String, String> producerFactory() {
        Map<String, Object> configProps = new HashMap<>();
        configProps.put(
          ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, 
          bootstrapAddress);
        configProps.put(
          ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, 
          StringSerializer.class);
        configProps.put(
          ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, 
          StringSerializer.class);
        return new DefaultKafkaProducerFactory<>(configProps);
    }

    @Bean
    public KafkaTemplate<String, String> kafkaTemplate() {
        return new KafkaTemplate<>(producerFactory());
    }
}

https://www.baeldung.com/spring-kafka

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java

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Contributed on Feb 11 2023

Pragya Keshap

0 Answers Avg Quality 2/10

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