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reactive programming java

Pragya Keshap answered on February 11, 2023 Popularity 9/10 Helpfulness 1/10

answer reactive programming java

reactive programming java

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Responsive: A reactive system should provide a rapid and consistent response time and hence a consistent quality of service

Resilient: A reactive system should remain responsive in case of random failures through replication and isolation

Elastic: Such a system should remain responsive under unpredictable workloads through cost-effective scalability

Message-Driven: It should rely on asynchronous message passing between system components\

In contrast, reactive programming is a programming paradigm where the focus is on developing asynchronous and non-blocking components.

public class HotelPriceConsumer {
  private KafkaReceiver<String, HotelPrice> kafkaReceiver: KafkaReceiver.create(/* setup params omitted */);
  private Scheduler scheduler: Schedulers.newSingle("kafka-consumer");

  private Flux<HotelPrice> consumeKafkaTopic() {
    return kafkaReceiver
      .receive() // Flux<ReceiverRecord<String, HotelPrice>>
      .subscribeOn(scheduler)
      .map(ConsumerRecord::value)
      .doOnError(throwable -> errorLogging(throwable))
      .retryBackoff(Long.MAX_VALUE, Duration.ofSeconds(1), Duration.ofSeconds(10));
  }

  private void errorLogging(Throwable t) {
      // ... some logging for observability when bad things happen
  }
}

https://tech.trivago.com/post/2021-03-16-java-reactive-programming-real-world/

Popularity 9/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java reactive-programming

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Contributed on Feb 11 2023

Pragya Keshap

0 Answers Avg Quality 2/10

reactive programming java

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