Hi Vinay, Once you have your subscriber applications setup to create a subscription to a topic to receive messages from it, then it should be good given that the communication can be one-to-many, many-to-one or many-to-many [1]. To be more specific, you will expect your subscribers (20 replicas as you mentioned) to receive messages from '/topic/invalidate-local-cache' once you've setup the subscriptions to it. On the other hand, you will also expect only one of the replicas receive message from '/topic/send-mail-to-user' only if you subscribe this specific replica to receive message from it.
[1] https://cloud.google.com/pubsub/docs/overview Jun On Monday, April 10, 2017 at 3:41:29 AM UTC-4, Vinay Chitlangia wrote: > > Hi, > Wondering if the pubsub notification on a topic, goes to all subscribers > listening to the topic or only one. Couldnt find a definitive answer in any > doc yet. > > Suppose I have a topic say > a) /topic/invalidate-local-cache. Now if I have servers with say 20 > replicas, this is a notification that I would like to go to each of the 20 > server. > b) /topic/send-mail-to-user. In this case, I would want only one of the > replica to receive the notification. > > Is it possible to setup different topics, some with a) and some with b) > > I am using flex, which may or may not impact the answer:) > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/578c4c73-6dab-4c42-990c-96ea432ea531%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
