Black Friday

  • Survive
  • Level 7 of 41
  • Signal

Difficulty 4 of 5

Survive five traffic waves on two boxes. You get 4 USD between waves. Keep p99 below 300 ms, and meet that target for at least 95 percent of the run.

Play level

VPS16 USD/moVPS · 2 vCPU · 8 GB16 USD/moHTTP/2Users800 req/sLoad balanc…0.25 vCPU · 0.5 GBAPI server0.5 vCPU · 1 GB
VPS · 2 vCPU · 8 GB16 USD/moVPS · 2 vCPU · 8 GB16 USD/moUsers800 req/sLoad bala…API server
The board at the start of the level
One server boardDrag or use arrow keys to change the load

280 req/s · CPU 70% · mean 22 ms

Goals and limits

Time within SLO
at least 95%
p99 latency
under 300 ms
Monthly cost
under 32 USD/mo
Waves
5
Time within SLO
at least 95%
Parts you can add
API server, Local cache
Part limit
12
Hosts
2 × 2 vCPU · 8 GB
Traffic
800 req/s

Concepts

How players did

Player results load from the server.