That seems pretty aggressive for just 100k users unless they mean concurrent users (in which case they should say so). Let's say that maybe 10% of your users a

That seems pretty aggressive for just 100k users unless they mean concurrent users (in which case they should say so). Let's say that maybe 10% of your users are on at any given time and they each may make 1 request a minute. That's under 200 QPS which a single server running a half-decent stack should be able to handle fine.