Watermark delay

  • Tune
  • Flow 03

Difficulty 2 of 5

Phones lose signal, so some events reach the log late. 5 percent of windows get events 20 s late, and 2 percent get events 5 minutes late. A window publishes when the wait on its results link ends. Keep 97 percent of windows complete and 99 percent published within 30 s.

Play level

HTTP/2TCPUsers20 req/sStream proc…2 vCPU · 4 GBKafka log1 vCPU · 1 GB
HTTP/2TCPUsers20 req/sStream proc…2 vCPU · 4 GBKafka log1 vCPU · 1 GB
The board at the start of the level
Each worker adds one network cardDrag or use arrow keys to change the workers

2 workers · 1 TB moves in 1.1 h · 1,000 Mbps per card

Goals and limits

Error rate
under 3%
p99 latency
under 30 s
Monthly cost
under 100 USD/mo
Traffic
20 req/s

Concepts

How players did

Player results load from the server.

All levels