Thank you so much Svante for your response. The application which we are designing depends lot upon request/response mechanism. In that case should we move to some other message broker? If yes, Can you please tell me the name which is best for this use case and can handle large amount of requests? Is there any workaround in Kafka? If Yes, Please tell me.
Thanks Warm Regards Lavish Goel On Mon, Sep 22, 2014 at 3:41 PM, svante karlsson <s...@csi.se> wrote: > Wrong use-case. Kafka is a queue (in normal case a TTL (time to live) on > messages). There is no correlation between producers and consumers. There > is no concept of a consumed message. There is no "request" and no > "response". > > You can produce messages (in another topic) as result of your processing > but you cant respond to a producer. > > /svante > > > 2014-09-22 11:42 GMT+02:00 lavish goel <lavis...@gmail.com>: > > > Thank you for your response. I have gone through the protocol wiki. Now I > > have some understanding of it. > > Sorry for again asking the question. > > > > I want to know, Is it possible: > > > > Let say, I have producer PA,PB,PC. They send request messages A,B,C > > respectively. Now these messages goes to topic. There are few consumers > > that took message from topic and do some computation on message. > > Let say after computation request A,B,C becomes AA,BB,CC respectively. > Now > > I want to send this response to Producer A,B,C respectively. > > > > Is it possible? if yes. Can You please explain in bit detail. > > > > Thank you so much > > > > > > Regards > > Lavish Goel > > > > > > On Sat, Sep 20, 2014 at 10:18 PM, Guozhang Wang <wangg...@gmail.com> > > wrote: > > > > > Also you can take a look at the SimpleConsumer and SyncProducer > > > implementation. > > > > > > On Sat, Sep 20, 2014 at 9:47 AM, Guozhang Wang <wangg...@gmail.com> > > wrote: > > > > > >> You can take a look at the protocol wiki to understand the request / > > >> response data types. Kafka server accepts socket connection for > > requests. > > >> > > >> Guozhang > > >> > > >> On Fri, Sep 19, 2014 at 10:42 PM, lavish goel <lavis...@gmail.com> > > wrote: > > >> > > >>> Thank you for your response. I want to implement request/response > type > > >>> model. > > >>> For eg. I have a producer that publish a message(He wants to know > some > > >>> status) to topic. A consumer pulls the message and processes the > > request. > > >>> Now I want that, the response of this request should go that > producer. > > Can > > >>> you please tell me how can I implement this. > > >>> > > >>> Thanks > > >>> Lavish > > >>> > > >>> On Sat, Sep 20, 2014 at 1:26 AM, Guozhang Wang <wangg...@gmail.com> > > >>> wrote: > > >>> > > >>>> Do you mean that you want to know the protocol? > > >>>> > > >>>> > > >>>> > > > https://cwiki.apache.org/confluence/display/KAFKA/A+Guide+To+The+Kafka+Protocol > > >>>> > > >>>> Guozhang > > >>>> > > >>>> On Fri, Sep 19, 2014 at 12:18 PM, lavish goel <lavis...@gmail.com> > > >>>> wrote: > > >>>> > > >>>> > Hi, > > >>>> > > > >>>> > Please tell me how to use request/response mechanism in kafka? > > >>>> > Thanks > > >>>> > Lavish Goel > > >>>> > > > >>>> > > >>>> > > >>>> > > >>>> -- > > >>>> -- Guozhang > > >>>> > > >>> > > >>> > > >> > > >> > > >> -- > > >> -- Guozhang > > >> > > > > > > > > > > > > -- > > > -- Guozhang > > > > > >
