This is a quirk that could cause data loss in rare scenarios but basically, in most cases, you'll have a single instance of your application because your load balancer will only send traffic to the other instances if the main instance isn't responding. But the load balancer will have to be setup to send traffic to a single instance at a time, and only try other nodes if the current node isn't responding.

The other instances are mostly redundant. That's how sites like Hacker News tend to operate, and why I chose this architecture. It's simple and stupid but doesn't work in scenarios where you have multiple servers in different locations for example. There's LiteFS to solve this problem but I don't have experience with it yet.

Ah got it, thanks for explaining and clarifying!

Cheers