[Vishnevskiy]

These are n1-standard8 on GCE.

These are getting easily over 30,000 requests a second each about updating queues for new messages. And also are subscribed to presence events from our presence system to millions of people. It is a very busy service ensuring we only deliver messages to people not at their computer.

[jsjohnst]

So if they are delivering 30k a second per box and the max "backlog" you allow to build is ~50k, then you cap your backlog at under 2sec worth of delivery? Or am I missing something?