RabbitMQ - Federated Queues with Exchange Federation

Question

I created a cluster of rabbits, and I posted a fan swap message every time something changed in the database.

I have dedicated queues associated with this exchange for some of my microservices that consume these updates, and I also initially set up a dedicated queue for an external client so that they can combine it with their own rabbit infrastructure and consume a copy of each message.

Now I am wondering if using the opportunity to exchange federation, rather than creating a new dedicated queue for each new external consumer, would be a better approach, as more and more users will come.

What are the pros and cons?

thanks

Answer 1

As long as you manage permissions correctly, the final decision is up to you. First, you can try all the options and find one that suits your actual needs.

Having a local queue can have pros and cons: it allows end users to survive some failures with their infrastructure or network problem due to your disk / memory, however you can limit the queue length and / or size.

I would advise you to take a look at the smooth fin and Dynamic shovels . In a local queue, it may work well.

Comparing with the federation, a shovel is much simpler, for example. it does not synchronize content between the upstream and downstream, but simply transfers the message from one queue to another in a reliable manner. As long as you don't need any federation, a shovel may be a good choice.

Also, you may find this q / a useful (however it may be a bit dated) - stack overflow site/questions/151836 / ....