Its now running on a dedicated server with 6 cores/12 threads and 32 gb ram. I hope this will be enough for the near future. Nevertheless, new users should still prefer to signup on other instances.
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You should be able to do that without problems. However the main bottleneck is the database, I think some people want to experiment with read replicas. However as developers we would rather focus on optimizations which will benefit everyone, not only the largest instances.
Ah awesome. The database horizontal scaling is a solved problem already luckily, especially an enterprise database like PostgreSQL has lots of options there.
Oh sure, but being able to horizontally scale shouldn’t hurt small instances 😉 Personally I’d probably host a single-user instance at some point just like I do with Mastodon, so I personally don’t really have a need for horizontal scaling either but it’s good to think of those things.