- You have a system whereby every instance has a 75%-79% uptime.
- Each instance's 21%-25% daily scheduled maintenance window can (generally) be arbitrarily-scheduled by the ops team.
How do you near guarantee that there's always one instance available?
If you said:
"manage a redundant cluster of at least 2 instances with non-overlapping maintenance windows"
Then you were correct!
BONUS QUESTIONS:
Q: What's the max number of ice cream machines found in a McDonald's location?
Q: What's the cluster size of the McDonald's ice cream monitoring system?
Q: How much money does McDonald's have?
Q: Why the fuck?
If you said: "1", "at least 3", "metric fuck-tons", and "I don't know", respectively, then you were correct!
If you said:
Then you were correct!BONUS QUESTIONS:
Q: What's the max number of ice cream machines found in a McDonald's location?
Q: What's the cluster size of the McDonald's ice cream monitoring system?
Q: How much money does McDonald's have?
Q: Why the fuck?
If you said: "1", "at least 3", "metric fuck-tons", and "I don't know", respectively, then you were correct!