The matrix.org server deployment handles around 100K concurrent users these days across ~4M rooms, with ~30Hz of messages in and ~3000Hz of messages out - and t

The matrix.org server deployment handles around 100K concurrent users these days across ~4M rooms, with ~30Hz of messages in and ~3000Hz of messages out - and these days has average traffic send time under 100ms. DEFCON should be trivial by comparison, and as others have said, the HOPE server (2500 users or so) was a resounding success - so much so that it’s been set up as permenant fixture now post conference. Now, it’s true that the Synapse server implementation has to be tuned - for large userbases you need worker processors and to dial up the caches a bit. And needless to say you need postgres rather than sqlite. Kinda depressing that nobody from DEFCON synced with the Matrix team (to my knowledge) on how best to do this, rather than just writing it off as slow and bloated.