Quorum sizes

  • Tune
  • Level 31 of 41
  • Quorum

Difficulty 3 of 5

Three replicas get 500 requests/s, 80 percent reads. Followers apply writes after 50 and 150 ms. Tune read quorum (R) and write quorum (W). No stale reads. Keep p99 below 200 ms.

Play level

HTTP/2Users500 req/sKey-value s…1 vCPU · 1 GB × 3
HTTP/2Users500 req/sKey-value s…1 vCPU · 1 GB × 3
The board at the start of the level
Copies and the write quorumDrag or use arrow keys to change the write quorum

Quorum 2 of 3 · commit 9.0 ms

Goals and limits

Stale reads
none
Error rate
none
p99 latency
under 200 ms
CPU use
under 85%
Monthly cost
under 20 USD/mo
Traffic
500 req/s

Concepts

How players did

Player results load from the server.

All levels