I used to think about this when I was a kid. If 5 billion people pray to God at the same time and ask for mutually exclusive things, how can he possibly answer or even listen to them all? And it's now up to 8 billion and the problem isn't getting any easier.

I guess the answer is God's perfect omniscience is massively concurrent on a scale unfathomable to human computational models and, by existing outside of time, he also avoids the possibility of race conditions. But Google can't do that, so they need to face this problem like the rest of us. I think they have really, by admitting it's impossible at that scale to provide service to all customers, so they simply don't, but their users have not yet accepted that.