[jacques_chester]

GameRanger has six million users, tens of thousands to hundreds of thousands of whom will be active simultaneously. His chat problem involved has moderate fan-out.

Scott Kevill does it on a single machine (last time I checked) with hand-rolled C++ and close attention to the details of how the Linux networking stack works.

[itsbits]

Single Machine??...really...would love to know more about the stack..

[pratikch]

I am also interested to know, Do you've any links on this?

[jacques_chester]

Scott gets very little press -- mostly when he picks up support for games after the publisher or matchmaking service abandons one.

I used to live in Perth and we'd sometimes hang out and mock the front page of HN.

http://www.gameranger.com/about/

[marktangotango]

Very interesting, do you have links available?