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Repo info
    Matt Jacobs
    @rrva Since Hystrix can wrap arbitrary work, it doesn't concern itself with retries. If you want to wrap a network call plus retries, you are certainly free to. This is the pattern we do internally.
    Thomas Lovett
    @mattrjacobs RE: "We have stopped using Turbine internally" -- What do you use these days to aggregate Hystrix streams?
    Alexander Kalinovski
    Hi, is it possible to extend behaviour of Circuit Breaker? I saw there was an issue Netflix/Hystrix#9 which was long time ago but didn’t see any changes with relation to that. It’s strange limitation.
    Jaroslav Sagan
    Hi all, in logs of app I see that Hystrix fallback has been executed because of this exception java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@7e3cc76f rejected from java.util.concurrent.ThreadPoolExecutor@398f6768[Running, pool size = 10, active threads = 10, queued tasks = 0, completed tasks = 32151] The only way how to get rid of it is to increase max ThreadPool size?
    Marcelo Balloni
    @SaganJaro_twitter Yes, but it also might be due to your commands taking to long to execute. You could decrease the timeout and/or working on making it execute faster (in case it really is slow)
    Jaroslav Sagan
    @mballoni ok, thank you.
    Matt Jacobs
    @tklovett we use Mantis, described here: http://techblog.netflix.com/2016/03/stream-processing-with-mantis.html. not open-sourced at this point
    @akalinovski yeah, that ticket is still open. i'm happy to review a PR for it
    @SaganJaro_twitter as @mballoni indicates, this exception exists because Hystrix uses a bounded thread pool. if your command volume or latency increases, the pool is more likely to get saturated at some point. note that this is by design. internally, there are many threadpools which we attempt to get 99.99% success and 0.01% rejection because the cost in threads of getting to 100% is not worth it
    Eric VIALLE
    Do some of you have experience with monitoring Hystrix in a Spring Boot Application deployed on an AWS elastic cluster ?
    Lokesh Ranganathan
    Hi @all can anyone please point me to a doc's or something which will help me to integrate the same on #nodejs and #hystrixJS ? #firstTimerOnCircuitBreaker
    Mark Corkery
    Hi folks, are there any steps we need to take to jump from 1.3.x to 1.4.6 of Spring Boot Admin?
    Denis Mouraviev
    hi guys
    Sushant Borse
    how to get the registered instances dynamically in the hystrix-turbine configuration ?
    Sergey Serdyuk
    Hello everbody, may be someone know, how to override hystix.<groupe> properties
    I have tried to change default config property in my spring cloud app "hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds: 355" only for one group. I wrote in my config hystrix.command.myFeignClient.execution.isolation.thread.timeoutInMilliseconds: 10000
    hystrix.myFeignClient.execution.isolation.thread.timeoutInMilliseconds: 10000
    . But I couldn't override default properies. Only if I wrote hystrix.command.myFeignClient#getSomething.execution.isolation.thread.timeoutInMilliseconds: 22000 I got result
    I have tried hystrix.command.<groupe>.... and also hystrix.<groupe>.
    where "groupe" is name of Feign client
    If you're using Archaius, it will get picked up live, otherwise, you'll need an app restart
    Hi Is there a support for completable Future with Hysterix
    Matt Jacobs
    @Saptarsi-C Not in the library - Hystrix is JDK6-compatible still
    Alessandro Vermeulen
    @Saptarsi-C is is straightforward to convert a Single into a completable future. Single to c.twitter.util.Future
    jonefee wang
    Hello folks, I am encountering HystrixObservableCommand thread pool rejection problem, my Command extends HystrixObservableCommand, as I know HystrixObservableCommand dosen't has concurrency threshold or etc. Anybody know why this happends ?
    jonefee wang
    got the answer:
                    // default to using SEMAPHORE for ObservableCommand if the user didn't set it
    Hi I am getting timeout exceptions randomly . I am using consul, with feign. Underlying service in returning response within the fallback time. Moreover the readTimeout , connection timeout of OkHttpClient of feign has a larger time than the hystrix timeout. Can anyone suggest?
    Roberto Perez Alcolea
    anyone has issues with HystrixObservableCommand and RxJava zip? We are seeing our hystrixcommand keeping/creating semaphores and not killing them. No failures in the Observable
    Khurrum Nasim
    is there a room for Curator ?
    I had a question on curator - how do i ensure that my cache stays alive in my application ?

    Hi All,
    I'm trying to use use spring cloud hystrix with spring cachable annotation, it is not working.
    following is code sample

    @Cacheable(value = "test", sync = true)
    public String getValue(int id) {
        return id + "";
    public String recoverGetValue(int id) {
        System.out.println("getting data from different resource");
        return id + "";

    Cacheable annotation throws operationTimeoutException, but fallback method is not being called. How to solve this issue?

    Srepfler Srdan
    anyone know what are the Zuul guys doing these days? there was some buzz when they explored zuul 2.0 and wrote the article with the conclusions but there was no conclusion/release afterwards, as if it all died
    can someone please point towards some documentation about publishing a hystrix.stream to a turbine server without using discovery?
    Jagmohan Sharma
    Hi Netflix/Hystrix Team,
    I am facing issue with hystrix turbine dashboard as The request rates shown at the aggregated circuit level do not match the threadpool request rates.These should be the same or very close. Please let me know if this not expected behaviour?
    Screen Shot 2017-10-13 at 3.46.03 PM.png
    As shown in above screenshot- request rate at aggregated circuit level is not matching with request rate at thread pool level. As cluster rate at circuit level is 135/s and thread pool level is 1622.1/
    I made some changes in hystrixThreadpool.js by taking previous changes in hystrixCommand.js into consideration. Please have look on this if It is on right side. :)
    Thiago Santos Joaquim
    Hi guys!!! Everyone ok? Sorry any mistake in my english...
    So, does anyone know how I can expose a random port on dokcer to Eureka?
    Thiago Santos Joaquim
    Hi everyone. What is the write way? i have 5 microservices and zull, hava any way to implement hystrix over zuul to protect all services or i have to implement hystrix in any microservice? in your opinion?
    Hello guys wanted to ask you what do you think about SWIM and gossip protocol for microservices faliure detection and cluster membership for example:
    Sushant Borse
    hey, has anyone integrated hystrix metrics to prometheus ?
    David J. M. Karlsen
    Sushant Borse
    Thanks @davidkarlsen , but unfortunately that one is not working for me...any other suggestion?
    David J. M. Karlsen
    how is it not working?
    Sushant Borse
    looks like the metrics I'm getting after hitting http://localhost:8888/metrics are spring-actuator-metrics(http://jsoneditoronline.org/?id=26dbc05242d6f12bba63df3f31ece107) and it is not in the prometheus required format and that is why getting error as "text format parsing error..."
    Shivam Goel
    When will be zuul/2 available ?
    Hi, I want to implement the Hystrix in gateway(like zuul).
    The gateway will discover service A, B or C, assume the service A has 10 instances and 10 Api. My question is.
    What is the best practice for the command key decision? Service Name+Instance IP+Api Name, it seems this gain the best detail level, as the different api, different instance fail will not circle break the other, But it may occupy large volume of command key.
    Jagmohan Sharma
    Hi Hystrix team, Can somebody from hystrix team or other help me on Netflix/Hystrix#1525 issue. I was in dicussion with @mattrjacobs in this. Can someone look into this? any help would be appreciated. Thanks.
    Yang Lifan
    In Hystrix 1.6.0, HystrixObservableCommand might remove thread-isolation. Netflix/Hystrix#1200 @jonefeewang