Keeping Costs Under Control

The number of users on your Mastodon server is just one factor influencing the resources needed.

Every time you or a user on your server follows or is followed by a remote user, that will have an impact. This depends on multiple factors, from the popularity of that remote user to how active they are.

So, if you want to keep your usage low, users should not engage in mass following of remote users and avoid using federation relays as much as possible.