We have a Production ready Meteor app (Angular-Meteor) and are testing it out.
Here’s a little info about our application:
People can create video groups and invite others. They can have a discussion about the video via messages and replies. The Application is hosted in the google app engine with 2GB RAM and 1-3 instances.
When there are around 10 users simultaneously working on a video group, it works fine for the first 5-10mins and then there is a sudden spike of the number of hosts from 10 to 500. I checked this out on Kadira (Monti APM). The app crashes for a good 5-10min. People can still navigate, but they cannot add anything.
Predominant errors are:
[client] Error: Uncaught Error: INVALID_STATE_ERR
[method] Error: You’ve been logged out by the server. Please log in again. 
[method] Error: Error, too many requests. Please slow down. You must wait 7 seconds before trying again. [too-many-requests]
I have added Kadira screenshot. Can someone please help me shed some light on what might be going wrong.