Is there a concept of acknowledgements in Redis Pub/Sub?
For example, when using RabbitMQ, I can have two workers running on separate machines and when I publish a message to the queue, only one of the workers will ack/nack it and process the message.
However I have discovered with Redis Pub/Sub, both workers will process the message.
Consider this simple example, I have this go routine running on two different machines/clients:
go func() {
for {
switch n := pubSubClient.Receive().(type) {
case redis.Message:
process(n.Data)
case redis.Subscription:
if n.Count == 0 {
return
}
case error:
log.Print(n)
}
}
}()
When I publish a message:
conn.Do("PUBLISH", "tasks", "task A")
Both go routines will receive it and run the process function.
Is there a way of achieving similar behaviour to RabbitMQ? E.g. first worker to ack the message will be the only one to receive it and process it.