spring rabbit listen output queue or receive

Question

I am developing an application with rabbitmq support. So, I have a consumer and a producer. And I need to decide between two ways how to set up communication between both of them.

The First Way

public void send(){
   //send to consumer and forget
   rabbitTemplate.convertAndSend("","routing-key",my object);
  //waiting for output queue and messages from consumer
  while(true){
     //receive something.
     if(corellationID==what we need){
        //do what we need
        break;
     }
  }
}

The second way

public void send(){
   //send to consumer and wait for result
   Object o=rabbitTemplate.convertSendAndReceive("","routing-key",my object);

}

Which way will work more quickly and stable under high loadings? And may be there another more effective way to do this. Thank you

Answer 1

The second way as with the first way you will have to implement what the second way already does:

• create a correlation id
• maintain a map
• dequeue message from the reply queue
• correlate reply message with the producer
• ...

Btw the most effective way is to not have a thread that waits for the reply. and so works in an asynchronous way: the thread that sends the message may not be the one that receive the reply. Have a look at the documentation