[rabbitmq-discuss] questions about RabbitMQ linear scalability

[Michael Klishin]

Zhihui Jiao:

> In ha mode, message are broadcast to multiple nodes, so the more node you have, the worse performance you get 
> if your setting is to ha all nodes int the cluster;

But you don't have to set it to all nodes, it can be a subset.

> In non-ha mode, message data only reside in one queue on only one node, but queue meta are spread to all nodes
> in the cluster, so if adding more nodes, you may got some performance improvement, but not linear improvement.

You will get roughly linear improvement if you use more queues instead of using a single
queue.
--
MK

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