Leader next to its majority

  • Build
  • Light 10
  • Planet

Difficulty 4 of 5

A database keeps 5 replicas on 3 continents; a write commits when the leader and 2 more replicas have it. The writes come from London and Frankfurt. Pick the leader and the fifth replica site: every commit under 30 ms, at most 16,000 USD/mo.

Play level

RegionTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPTCPCityReplicaCityReplicaCityReplicaCityReplicaCityReplicaCityReplicaCityUsersCityUsers
The board at the start of the level
Light across a planetDrag or use arrow keys to pick a path

Lasers in orbit, New York to London · 7,151 km · 24 ms one way

Goals and limits

p99 latency
under 30 ms
Monthly cost
under 16,000 USD/mo

Concepts

How players did

Player results load from the server.

All levels