L4 or L7

  • Choose
  • Wire 20

Difficulty 3 of 5

Users send 1,500 API calls/s to /api and 500 image requests/s to /images, all over TLS. The API pool and the image pool are fixed. Choose the balancer that keeps API p99 under 50 ms and errors under 0.1 percent for both paths.

Play level

Options

  • L4, TLS passes through
  • L7 with path rules, TLS passes through
  • L7 with path rules, TLS ends at the balancer
One balancer, many serversDrag or use arrow keys to add or remove servers

Goals and limits

p99 latency (Api)
under 50 ms
p99 latency (Images)
under 200 ms
Error rate (Api)
under 0.1%
Error rate (Images)
under 0.1%
Monthly cost
under 150 USD/mo
Traffic
1,500 req/s

Concepts

How players did

Player results load from the server.

All levels