Keep in mind groups is 18 years old. It started as an email list and I can tell you we had 12 email servers and they sat at around 2k message a second... steady

Keep in mind groups is 18 years old. It started as an email list and I can tell you we had 12 email servers and they sat at around 2k message a second... steady. We didn't even alert until they hit 20k in the queue. The photos in Groups was also an interesting thing. We once had a "hacker" create groups called shard1 shard2 .. etc etc. He put his porn in there and deep linked to it. We found out when we got the internet bill for the overseas bit. We were pumping out 8GB a second to China and didnt even notice the traffic until we got the bill :) Yes, I am sure Facebook/ reddit has eclipsed it by far in data sets now, however the volume in groups isnt matched by many other. When I left they had ~4 Petabytes of data... around 8 years ago