Write skew

Quorum 17
SQLUsers100 req/sPostgres1 vCPU · 1 GB
SQLUsers100 req/sPostgres1 vCPU · 1 GB

Fix the board. Turn every goal green.

Traffic
100 req/s · reads only
Limit
Postgres answers about 15,000 reads/s
Bill
  • Postgres4 USD/mo
4 of 20 USD/mo

Goals

Not tested yet

Copies of data that do not match.What the servers and services cost each month.

Ada and Bo are both on call. Each transaction reads both rows, then sets its own row to off call. Keep at least one doctor on call when both transactions run at the same time.

0:00. Both doctors are off call. Graph: the on-call count drops from 2 to 0 in one step.

An order and its event commit togetherTap to turn the outbox on or off

Outbox · 10 orders · 10 events · 0 lost