Spread across racks
Difficulty 3 of 5
Three database replicas serve 80,000 lookups/s, and the load needs two. The rack 2 switch fails at 0:20 and power feed A at 0:40. Keep p99 under 50 ms and errors under 1 percent.
Two rows · 3 of 3 replicas up · load served
Goals and limits
- p99 latency
- under 50 ms
- Error rate
- under 1%
- Monthly cost
- under 260 USD/mo
- Hosts
- 5 × 2 vCPU · 8 GB
- Traffic
- 80,000 req/s
Concepts
How players did
Player results load from the server.