We use DigitalOcean for hosting. We were pushing video to ~100 clients steadily for ~6 hours without many issues, but ~3AM EST we got DDOS'd and DigitalOcean disabled our streaming box for a few hours.
Our box actually wasn't disabled - just the network. We were getting hit with > 1 Gbps of bandwidth inbound. Prior to the DDoS, we were handling the traffic quite well with a single 1GB RAM box. At times we were pushing around 20MB/s outbound.