2 Replies Latest reply on Mar 22, 2013 9:31 AM by jadtn

    [RF4.3.1] A4j:push/atmosphere recommandations about TopicKey creation, configuration, resources?

    jadtn
    jadtn Mar 9, 2013 11:38 AM

      Hi,

       

      I don't found  information in  Richfaces Developper Guide or Component Reference about how many threads are used when you create a Topic a supbtopic or what are the recommandations usage or configuration for a4j:push.

       

      I'm 'reserved'/'anxious'  about the resources (threads...) that the push  (atmosphere) can take on the jvm .

       

      0/Context

      Environnement :

      Versions : RF4.3.1Final and JBoss 7.

      'Simple' push in pure JSF ( no jms, no cdi)

      Configuration by default of richfaces

       

      To clarify my usage of a4j: push, and it is more easy to take a use case : I use a4j:push for a private chat, like  'msn' (the chat is not based 'on room' but private conversation).

      So, currently, I use 1 TopicKey per user (or session): each user in his chat popup receive all his messages.

       

      1/Threads resources

      a) 1 TopicKey by user / session

      Actually I create 1 TopicKey for each user (session ), each TopicKey is listen only by one user .

      {code}
      //somewhere in a SESSION bean for the user x
      TopicsContext topicsContext=TopicsContext.lookup();; //class attribute  in session backbean
      TopicKey topicKey = new TopicKey(jsessionid);//class attribute  in session backbean
      //...
      public void sendMessage(String message){
           topicsContext.publish(jsessionid,message);
      }
      {code}

       

      If I ve 500 users connected (500 TopicKey) : how many Threads (richfaces + atmosphere) will use be?

      How richfaces map a Topic in atmosphere?

       

      b)Vs 1 subTopic by user / session and 1 Topic for the 'chat'

      If I create 1 Topic for t

      {code}
      //somewhere at APPLICATION LEVEL:
      TopicsContext topicsContext=TopicsContext.lookup();;//class attribute  in a application backbean
      TopicKey topicKey = new TopicKey("rootChat");//class attribute  in a application backbean
       
       
      //And somewhere in a SESSION bean for the user x
      TopicsContext topicsContext=TopicsContext.lookup();;//class attribute in session backbean
      TopicKey topicKey = new TopicKey("rootChat@"+jsessionid); //class attribute  in session backbean
      //
      //...
      public void sendMessage(String message){
           topicsContext.publish("rootChat@"+jsessionid,message);
      }
      {code}

       

      How many threads this will take in this case (richfaces + atmosphere) ? Less ?

       

      c)Configuration

      I've found some link about atmosphere configuration, but, it is need to do something with richfaces?

       

       

      Thanks for any remarks, critics, or response :-)

       

      Adrien