MongoDB usage

Questions / Help
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Hi everyone, I’m new to Fly, and it looks very promising, really inspiring and amazing piece of technology!

I’ve tried to look up on setting up MongoDB with replicas - I’ve found this:
Any plans to provide MongoDB replicaset? - General - Fly.io

But the answer does not help since there’s no example app with MongoDB (maybe used to be?)

I’d like to set up MongoDB in a cluster of 3 nodes - one primary and 2 secondary members for HA and auto failover, alongside to a REST API server (preferably in .NET7) which will connect to mongo locally

While on the topic, I have 2 side questions please:

  1. Would you say this topology makes sense (3 Fly apps - each with a mongo node and an application server), or is there a better way?
  2. Would 3 Fly apps on different regions be more resilient to failover than 3 apps on the same region (I mean, this can only be true if those 3 apps on same region would be hosted on the same physical machine, right? So I wonder how Fly sets them up)?

Thx in advance!

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