CircuitResource.java

@Path("/circuit")
public class CircuitResource {
    
    @Timeout(unit = ChronoUnit.MILLIS, value = 500)
    @Fallback(fallbackMethod = "fallback")
    @CircuitBreaker(requestVolumeThreshold = 4, failureRatio = 0.5, delay = 2000, delayUnit = ChronoUnit.MILLIS, successThreshold = 2)
    @GET
    public String getCircuit() throws InterruptedException {
        Thread.sleep(600);
        return "Circuit \n";
    }

    private String fallback(){
        return "I'm a fallback ";
    }
}