For a while, our issue was with scaling frontend servers. We started off running on dedicated server(s), but we're now on a hybrid of dedicated and cloud.

The issue tonight was with bandwidth between our servers, capping out around 500mbps/up. We've only located the problem tonight, having encountered this specific issue only three times: the two Presidential debates, and the Vice Presidential debate.

Obviously now that we've identified this bottleneck we'll be upgrading that server so that it's no longer something to have to even think about.

We can't give a huge amount of details because it's not just pedes reading this - but I'll answer any technical questions or concerns that I can.