Active-active or standby

  • Choose
  • Guard 11

Difficulty 3 of 5

Orders arrive at 1,200/s. One API vCPU serves about 330 orders/s. DNS checks each region every 5 s, and clients keep an answer for 10 s. At 10:00 eu-central fails for good. Lose at most 1 percent of orders in 30 minutes, with p99 under 300 ms. Budget: 64 USD/month.

Play level

Options

  • Warm standby: 5 vCPU in eu-central, 1 scaling vCPU in eu-west (46 USD/mo)
  • Active-active: 2.5 vCPU in each region (42 USD/mo)
  • Active-active: 5 vCPU in each region (62 USD/mo)
Failure domains on the floorTap for the next fault. Arrow keys move the replicas.

Goals and limits

Availability
at least 99%
p99 latency
under 300 ms
Monthly cost
under 64 USD/mo
Traffic
1,200 req/s

Concepts

How players did

Player results load from the server.

All levels