So in this way, we can build fault-tolerant microservices using Hystrix. Hystrix Circuit Breaker, getting failure exception in fallback method; Hystrix Circuit Breaker, Setting Configuration Properties Using @HystrixProperty; Circuit Breaker, Specifying Hystrix configuration in application.properties file; Circuit Breaker Hystrix, concurrent requests and default thread pool size Also related information regarding thread pools. Here it invoke fallback method as we have configured 1000 ms for timeout and in getData method we have explicitly add delay of 1200 ms using Thread.sleep(1200). * A fallback method should be defined in the same class where is HystrixCommand. Hystrix Health stats. * properties are not taking effect. It takes long time to response"; } The complete Rest Controller class file that contains REST API and Hystrix properties is shown here − Hystrix circuit breaker and fallback will work for delayed instances of account service. 1000ms is also default value for Hystrix timeoutInMilliseconds property. Circuit Breaker Design Pattern Using Netflix Hystrix — Hystrix Application, Circuit Breaking With Hystrix, fallback methods, configuration. hystrix.command. We can see success, timeout, and failed percentages. You can notice this by taking a look at the log when the circuit is open. This allows the REST service to restore itself if it was getting too much traffic. Default Fallback. Next, define the fallback method fallback_hello() if the request takes a long time to respond. * for example: * < code > * @HystrixCommand(fallbackMethod = "getByIdFallback") You can change url for restTemplate.getForObject method and test it for fallback. When the circuit goes open, it means that by default all traffic will directly go to the fallback method rather than trying on the original method first. Hello, I am getting this exception even though the fallback method signature is same as actual method. * Also a fallback method should have same signature to a method which was invoked as hystrix command. You can find the source code in my GitHub repository: There are no auto retries for Ribbon client (1) and its read timeout (2) is bigger than Hystrix’s timeout (3). Hystrix circuit breaker and fallback will work for delayed instance of account service. If we remove Thread.sleep(1200) from code than output will be as follow. Here we can see all the details related to the method we have implemented a fallback mechanism. For some first requests, you receive a fallback response from Hystrix. 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