At the time of writing, Lemmyworld has the second highest number of active users (compared to all lemmy instances)
Also at the time of writing, Lemmyworld has >99% uptime.
By comparison, other lemmy instances with as many users as Lemmyworld keep going down.
What optimizations has Lemmyworld made to their hosting configuration that has made it more resilient than other instances’ hosting configurations?
See also Does Lemmy cache the frontpage by default (read-only)? on !lemmy_support@lemmy.ml
By any chance, did you take a look at the load that each of the lemmy services were generating before and after the migration to the standalone server? That should give at least somewhat of an indication of how much room for growth you have.
At any rate, awesome that you’re doing this :)