Queue the email

  • Build
  • Level 17 of 41
  • Queue

Difficulty 1 of 5

Signup waits for the email provider, so signup is slow. Keep signup p99 below 150 ms. Every email must still finish within 25 seconds, and no email may be lost.

Play level

HTTP/2HTTP/2Users100 req/sAPI server1 vCPU · 1 GBEmail servi…2 vCPU · 2 GB
HTTP/2HTTP/2Users100 req/sAPI server1 vCPU · 1 GBEmail servi…2 vCPU · 2 GB
The board at the start of the level
A queue between two speedsDrag or use arrow keys to change the workers

4 workers · 3 jobs waiting · wait 33 ms

Goals and limits

p99 latency
under 150 ms
Lost writes
none
Completion time
under 25 s
Monthly cost
under 500 USD/mo
Parts you can add
Message broker, Managed queue
Part limit
16
Traffic
100 req/s

Concepts

How players did

Player results load from the server.