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What is the use of Netflix Hystrix?

Pragya Keshap answered on February 4, 2023 Popularity 5/10 Helpfulness 1/10

answer What is the use of Netflix Hystrix?

What is the use of Netflix Hystrix?

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Hystrix is an error tolerance and latency library. It is mainly used to isolate the access points. It also ensures that all 3rd party libraries and services are restricted. So, the application runs efficiently and avoids the kind of failures that occur in distributed systems.

@Test
public void givenCircuitBreakerSetup_whenRemoteSvcCmdExecuted_thenReturnSuccess()
  throws InterruptedException {

    HystrixCommand.Setter config = HystrixCommand
      .Setter
      .withGroupKey(HystrixCommandGroupKey.Factory.asKey("RemoteServiceGroupCircuitBreaker"));

    HystrixCommandProperties.Setter properties = HystrixCommandProperties.Setter();
    properties.withExecutionTimeoutInMilliseconds(1000);
    properties.withCircuitBreakerSleepWindowInMilliseconds(4000);
    properties.withExecutionIsolationStrategy
     (HystrixCommandProperties.ExecutionIsolationStrategy.THREAD);
    properties.withCircuitBreakerEnabled(true);
    properties.withCircuitBreakerRequestVolumeThreshold(1);

    config.andCommandPropertiesDefaults(properties);
    config.andThreadPoolPropertiesDefaults(HystrixThreadPoolProperties.Setter()
      .withMaxQueueSize(1)
      .withCoreSize(1)
      .withQueueSizeRejectionThreshold(1));

    assertThat(this.invokeRemoteService(config, 10_000), equalTo(null));
    assertThat(this.invokeRemoteService(config, 10_000), equalTo(null));
    assertThat(this.invokeRemoteService(config, 10_000), equalTo(null));

    Thread.sleep(5000);

    assertThat(new RemoteServiceTestCommand(config, new RemoteServiceTestSimulator(500)).execute(),
      equalTo("Success"));

    assertThat(new RemoteServiceTestCommand(config, new RemoteServiceTestSimulator(500)).execute(),
      equalTo("Success"));

    assertThat(new RemoteServiceTestCommand(config, new RemoteServiceTestSimulator(500)).execute(),
      equalTo("Success"));
}

https://www.baeldung.com/introduction-to-hystrix#:~:text=In%20summary%20Hystrix%20is%20designed,Fail%20fast%20and%20rapidly%20recover

Popularity 5/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java netflix

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Contributed on Feb 04 2023

Pragya Keshap

0 Answers Avg Quality 2/10

What is the use of Netflix Hystrix?

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