Instance Level Load Balancing of a Subcriber in a PUB SUB Mode on the event bus

[arunkumarck]

Example

• 1 Publisher Verticle P
• Vertcile Subscribers A and B
• Subscriber A has two Verticle instances

When data is received on the topic/event bus in pub sub mode, the data should be load balanced between the instances of subscriber A.

Note:

1. Request Reply does not provide receiver agnostic programming
2. Request Reply is not the same as PUB SUB.
3. It involves a response, even if left empty will need to be timed out which makes it a overhead.

[tsegismont]

This is by design of the eventbus.

If you require to have at most one consumer handling the published message, you must extract the consumer code in a separate verticle and deploy a single instance.