Publish to many queue group? about hemera HOT 3 CLOSED

You can't publish to a specific queue because many subscribers builds a queue group. The publisher is not aware of that. If you have one queue group and many instances (default) the request will be load balanced across all subscribers. If you have a custom queue group with the same topic the request will arrive one instance doesnt matter how much this service is scaled but if you have many different queue groups per add with the same topic the request will load balanced for each group so multiple subscriber will receive that event.

Default: topic = queue-group

add('topic:math,cmd:add')

Worker Queue: If you scale your service the request will receive only one instance. (Doesnt matter whether pubsub or request/reply)

add('topic:math,cmd:add,queue$:test')
add('topic:math,cmd:add,queue$:test')

Custom queue per add: The request will receive at least one time for each custom queue-group

add('topic:math,cmd:add,queue$:test1')
add('topic:math,cmd:add,queue$:test2')

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I have had a quick view of the source code, guessing that I may code as below:

// group-1 with many instances
hemera.add({
  $queue: 'group-1'
  topic: 'sth-happened'
}, handler)

// group-2 with many instances
hemera.add({
  $queue: 'group-2'
  topic: 'sth-happened'
}, handler)

hemera.act({
  $pubsub: true,
  topic: 'sth-hanppened'
})

Does this implement what I issued before?

Thanks.

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Closed due to inactivity.

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