@volkris @lps @errhead @Revertron @kzimmermann
Yes, AP is very easy on resources. I've built a full-featured AP server from scratch so I know how the protocol works and how it behaves under different conditions.
In AP world you only receive stuff you care about, so most of the time server is just waiting for something to land into inbox, or for outgoing request to complete. There's nothing else to do
>so many instance operators experiencing meltdowns and surprise hosting costs when the resources exploded far higher than they expected
Tell them to use better software.