Count the nines
Difficulty 3 of 5
Each request needs all four services. Each has 99.95 percent availability, and failures are independent. In a 30-day month, how many minutes is the full chain down?
The question
Answer with one number in minutes.
Goals and limits
- p99 latency
- under 200 ms
- Monthly cost
- under 10 USD/mo
- Traffic
- 100 req/s
Concepts
How players did
Player results load from the server.