Quorum sizes

Level 31 of 41
HTTP/2Users500 req/sKey-value s…1 vCPU · 1 GB × 3
HTTP/2Users500 req/sKey-value s…1 vCPU · 1 GB × 3

Tune the parts. Turn every goal green.

Traffic
500 req/s · 80% reads
Limit
Key-value store answers about 90,000 reads/s
Bill
  • Key-value store12 USD/mo
12 of 20 USD/mo

Goals

Not tested yet

Reads that returned old data.The share of requests that fail or get no answer.99 of 100 requests finish faster than this.How busy the busiest CPU is. Keep room for spikes.What the servers and services cost each month.

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.